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DURA-BAR CAST IRON BARS TECHNICAL INFORMATION Type G1A ......................................................................................17-2 Type G2..........................................................................................17-3 Type 65-45-12................................................................................17-4 Type 80-55-06................................................................................17-5 201 Type 1 NI-Resist......................................................................17-6 ROUNDS Type G1A ......................................................................................17-8 Type G2, Type 80-55-06 and Type 65-45-12 ................ 17-8 thru 17-9 Ni-Resist ......................................................................................17-10 FLAT BAR Type 65-45-12 Flats (Ductile Iron).............................. 17-11 thru 17-12 Type G2 Flats (Gray Iron)............................................................17-12 SQUARES Type G2 (Gray Iron).....................................................................17-13 Type 65-45-12 (Ductile Iron)........................................................17-13 TUBING Type G2 (Gray Iron).....................................................................17-14 Type 65-45-12 (Ductile Iron)........................................................17-14 Type 80-55-06 (Ductile Iron)........................................................17-14 PLATE 2 Sides Milled and 4 Sides Milled, Stress Relieved ....................17-15 PRECISION DUPLEX MILLED RECTANGLES Type 65-45-12 (Ductile Iron) 4 Sides Duplex Milled.... 17-15 thru17-18 PRECISION DUPLEX MILLED SQUARES Type 65-45-12 (Ductile Iron) 4 Sides Duplex Milled.....................17-19 TOLERANCES............................................................... 17-20 thru 17-22

17-1

alro.com

DURA-BAR

CONTINUOUS CAST IRON BARS

Dura Bar is a family of engineered cast iron bar products designed to offer the best combination of machinability, sliding wear resistance, heat treat response, noise and vibration damping and guaranteed mechanical properties when compared to most other as-rolled ferrous materials. Dura Bar can often be used to replace castings, some carbon steels, bearing bronze at times and extruded aluminum materials. Due to its outstanding milling and drilling characteristics, heavily machined components are usually excellent candidates for Dura Bar products to help reduce manufacturing costs. A full range of metallurgical, engineering, heat treating and machining data can be provided from Alro product specialists upon request. Cast Irons are not typically referenced by chemistry rather mechanical properties, specifically strength and hardness. The primary difference in these types is the shape and distribution of graphite in their microstructure. Duar-Bar offers a zero defect guarantee plus the inherent benefits of cast iron such as: • Decreased Downtime For Tooling Changes • Improved machinability • Reduced Scrap By Using Defect-Free Material • Lower Tool Cost

TYPE G1A DURA-BAR

GRAY IRON

Dura-Bar G1A has Type D graphite in a predominantly ferrite matrix. This specification was originally developed for the glass mold industry where a fine grain structure and superior machining finish are needed. Dimensional growth due to repeated heating and cooling cycles is minimal due to the smaller graphite flake size and ferritic matrix structure.

TYPICAL APPLICATIONS • Baffles • Full Molds • Blank Molds

• Bottom Plates • Discs • Funnels

• Guide and Neck Rings • Plungers

• Sleeves • Thimbles

TYPICAL ANALYSIS G1A Carbon 2.60 - 3.75% Silicon 2.30 - 3.00% Manganese 0.10 - 0.35% Sulfur 0.025% MAX. . Phosphorus 0.12% MAX Other MECHANICAL PROPERTIES BRINELL HARDNESS 143 - 229 TENSILE–PSI 25,000* YIELD–PSI - ELONGATION IN 2”-% - *The tensile data is not a minimum, but rather the typical expected tensile strength and is for rounds only. Anticipated tensile data for shapes, including squares and rectangular will be provided upon request.

17-2

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DURA-BAR

CONTINUOUS CAST IRON BARS

TYPE G2 DURA-BAR

GRAY IRON

G2 is a pearlitic gray iron containing Type A graphite. Gray iron bars made to this specification will have optimal strength, wear and hardness when compared to the other gray iron grades. This material is well suited for applications requiring high resistance to wear and response to heat treatment. This specification is similar to ASTM A48 Class 40.

TYPICAL APPLICATIONS

Typical applications for G2 are listed below. They are classified by industry. Fluid Power:

Cylinder Blocks, Glands, Manifolds, Pistons, Spools, Valves.

Machinery:

Bushings, Gears, Gibs, Pulleys, Rams, Sheaves, Side Frames, Slides, Ways, Spindles, Housings.

Transportation:

Cylinder Liners, Gears, Lash Adjusters, Shock Absorber Pistons, Valve Guides, Valve Seat Inserts, Brake Rotors.

Pump and Compressor:

Liners, Pistons, Rollers, Rotors, Seals.

Oil and Gas: Bridge Plugs, Cement Plugs, Cones, Mandrels, Retainers, Slips. Miscellaneous:

Aluminum Mold Plates, Bushings, Cams, Chain Sheaves, Core Boxes, Dies, Gears, Pattern Plates, Pulleys, Wheels

TYPICAL ANALYSIS G2 Carbon 2.60 - 3.75% Silicon 1.80 - 3.00% Manganese 0.60 - 0.95% Sulfur 0.07% MAX. Phosphorus 0.12% Other MECHANICAL PROPERTIES BRINELL HARDNESS 183 - 301 TENSILE–PSI 40,000* YIELD–PSI ELONGATION IN 2”-% *The tensile data does not indicate a minimum but rather typical expected tensile strength. Heat Treat Response: 50 Rc on outside . Dura-Bar G2 can be hardened by fast methods, such as flame and induction hardening, in addition to conventional quench and temper methods. Dura-Bar G2 can be oil quench hardened from 1600° F (885° C) to a minimum hardness of Rockwell C 50 on the outside of the bar. Inside diameter hardness will be less than Rockwell C 50.

17-3

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DURA-BAR

CONTINUOUS CAST IRON BARS

TYPE 65-45-12

DUCTILE IRON

Dura-Bar 65-45-12 ductile iron contains nodular graphite in a matrix of ferrite with small amounts of pearlite. Because of it’s unmatched combination of machinability, mechanical properties and heat treat response, Grade 65-45-12 is the most often chosen material of all the Dura Bar iron types. The ferritic structure produces the most machinable ferrous grade of material available anywhere in combination with good surface finishes, optimal impact strengths, fatigue properties, electrical conductivity and high magnetic permeability. This iron has approximately the same tensile and yield strengths as AISI 1020 steel in the as-rolled condition. This specification conforms to ASTM A536 grade 65-45-12.

TYPICAL APPLICATIONS Typical applications for 65-45-12 are listed below. They are classified by industry. Fluid Power:

Cylinder Blocks, End Caps, Gear Rack Housings, Gerotors, Manifolds, Pistons, Glands, Rotors, Valves.

Machinery:

Bushings, Chuck Bodies, Die Blocks, Gears, Journals, Pulleys, Rotary Tables, Side Frames, Spindle Housings, Tie Rod Nuts, Flywheels, Rams.

Transportation:

Rail Spacers, Sprockets.

Pump and Compressor: Gears, Housings, Pistons, Rotary Screws. Glass Mold:

Blank Molds, Plungers.

TYPICAL ANALYSIS TYPE 65-45-12 Carbon 3.50 - 3.90% Silicon 2.25 - 3.00% Manganese 0.15 - 0.35% Sulfur 0.025% MAX. Phosphorus 0.05% Other MECHANICAL PROPERTIES BRINELL HARDNESS 131 - 217 TENSILE–PSI (min) 65,000 YIELD–PSI (min) 45,000 ELONGATION IN 2”-% 12%* *In bars under 2” diameter, elongation will be 9% minimum Heat Treat Response: Rc 50 Dura-Bar 65-45-12 can be oil quench hardened from 1600° F (885° C) to Rockwell C 50 minimum on the outside of the bar. Hardness in the core will be less than the hardness on the outside surfaces. Typical Jominy end quench test data can be provided upon request. This grade also responds well to surface hardening methods such as flame or induction heat treating. It is well suited for austempering because of the low residual alloy content, and the highly ferritic matrix provides predictable growth with minimal heat-distortion.

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DURA-BAR

CONTINUOUS CAST IRON BARS

TYPE 80-55-06

DUCTILE IRON

Dura-Bar 80-55-06 ductile iron will contain nodular graphite in a matrix of ferrite and pearlite. The pearlite/ferrite structure provides higher wear resistance and strength when compared to a ferritic grade of ductile iron. This material will be readily machinable with good surface finishes. Tensile and yield strengths will be similar to AISI 1040 steel in the as-rolled condition. This grade conforms to ASTM A536 grade 80-55-06.

TYPICAL APPLICATIONS Typical applications for 80-55-06 are listed below. They are classified by industry. Fluid Power:

Cylinder Blocks, Gerotors, Manifolds, Pistons, Glands, Rotors, Valve Bodies.

Machinery:

Bushings, Chain Sheave Rollers, Chuck Bodies, Die Blocks, Gears, Gear Racks, Pulleys, Press Rams, Rotary Tables Tie Rod Nuts, Guide Ways, Barrel Rollers (cement truck), Flywheels, Pile Drivers, Pulleys, Rams.

Transportation:

Pulleys, Gears, Rail Spacers.

Pump and Compressor: Gears, Housings, Liners, Pistons, Rotary Screws. Steel Mill:

Guide Rolls, Pinch Rolls, Runout Table Rolls.

Miscellaneous:

Disamatic Pouring Rails, Dies, Pattern Plates, Core Boxes, Grinding Rolls, Mill Liners.

TYPICAL ANALYSIS TYPE 80-55-06 Carbon 3.50 - 3.90% Silicon 2.25 - 3.00% Manganese 0.15 - 0.35% Sulfur . 0.025% MAX. Phosphorus 0.05% Other MECHANICAL PROPERTIES BRINELL HARDNESS 187 - 269 TENSILE–PSI (MIN) 80,000 YIELD–PSI (MIN) 55,000 ELONGATION (MIN) 6%* *In bars under 1-1/2” diameter, elongation will be 4% minimum Heat Treat Response Dura-Bar 80-55-06 can be oil quench hardened from 1600° (885° C) to a minimum hardness of Rockwell C 50 on the outside of the bar. The inside diameter hardness will be less than Rockwell C 50. Lower quench hardness on the inside diameters are a result of larger graphite nodules and not a loss of matrix hardness. Typical Jominy end quench test can be provided upon request.

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alro.com

DURA-BAR

CONTINUOUS CAST IRON BARS

201 TYPE 1 NI-RESIST DURA-BAR

Ni-Resist irons contain an austenitic matrix with about 10% alloy carbides. The austenitic structure is suitable for corrosive environments in sour well oils, salts, salt water acids and alkalies. The iron is relatively soft and chrome is added to produce carbides that help improve wear resistance. Ni-Resist is more dense than gray or ductile irons and will have a higher coefficient of thermal expansion. Dura-Bar Type 1 Ni-Resist is manufactured to produce a material conforming to ASTM A436, Type I.

TYPICAL APPLICATIONS

Typical applications for 201 Type 1 NI-Resist Dura-Bar are listed below.

• Valve Guides • Insecticide Pumps • Flood Gates

• Piston Ring Inserts • Sea Water Valves • Pump Bodies

TYPICAL ANALYSIS TYPE 1 NI-RESIST

Carbon

3.00% MAX



Silicon

1.00 - 2.80%



Manganese



Nickel

13.50 - 17.50%



Copper

5.50 - 7.50%



Chromium

1.50 - 2.50%

Sulfur

0.50 - 1.50%

0.12%

MECHANICAL PROPERTIES

BRINELL HARDNESS

TENSILE–PSI

131 - 183 25,000 psi for * bars up to 3” diameter. 20,000psi for bars larger than 3” diameter.

YIELD–PSI

-



-

ELONGATION IN 2”-%

*Tensile strength is approximate. Tensile strength tests in bars 1.750” and smaller may not be accurate because of thermal center microshrinkage.

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alro.com

Alro Steel Has A Broad Size Range of Precision Duplex Milled Cold Finished Bars In Stock

Bars are available from 1-1/4” - 25” square. Milled bars are coated with rust inhibitor.

Alro stocks Gray and Ductile rounds up to 28” diameter. Round bars over 20" diameter are turned to the size listed +0.080" / -0.000" and are finish to 0.250" below the size listed.

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alro.com

DURA-BAR ROUNDS TYPE G1A STOCK LENGTHS 72”

Type G1A (Gray Iron) - As Cast Nominal Diameter (inches) 2 2-1/2 2-3/4 3 3-1/4

G1A WT/FT (lbs) 10.7 16.7 20.0 23.7 27.9

Nominal Diameter (inches) 3-1/2 3-3/4 4 4-1/2 6

G1A WT/FT (lbs) 32.2 36.8 41.7 52.8 92.8

DURA-BAR ROUNDS TYPE G2, TYPE 80-55-06 and TYPE 65-45-12 STOCK LENGTHS 72”. ALSO AVAILABLE IN 144” LENGTHS UPON REQUEST Gray Iron

Ductile Irons

Nominal Type WT/FT Type Type Diameter 65-45-12 (lbs) G2 80-55-06 Inches A/C C/F A/C C/F A/C C/F A/C C/F 5/8 1.2 1.0 X X 3/4 1.7 1.4 X X 7/8 2.3 1.9 X X 1 2.9 2.5 X X 1-1/8 3.6 3.1 X X 1-1/4 4.4 3.9 X X X X 1-3/8 5.2 4.7 X X X 1-1/2 6.2 5.6 X X X X 1-5/8 7.2 6.5 X X X 1-3/4 8.3 7.6 X X X X 1-7/8 9.4 8.7 X X 2 10.7 9.9 X X X X X X 2-1/8 12.2 11.1 X X X 2-1/4 13.7 12.5 X X X X X 2-3/8 15.1 13.9 X X X X 2-1/2 16.7 15.4 X X X X X 2-5/8 18.3 17.0 X X X X X X 2-3/4 20.0 18.6 X X X X 2-7/8 21.8 20.3 X X 3 23.7 22.1 X X X X X X 3-1/8 25.9 24.0 X X X 3-1/4 27.9 26.0 X X X X 3-3/8 30.0 28.0 X X X 3-1/2 32.2 30.0 X X X X 3-5/8 34.5 32.3 X X X NOTE: A/C refers to As-Cast • C/F refers to Cold Finished

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alro.com

DURA-BAR ROUNDS TYPE G2, TYPE 80-55-06 & TYPE 65-45-12 STOCK LENGTHS 72” ALSO AVAILABLE IN 144” LENGTHS UPON REQUEST

Gray Iron Ductile Irons Nominal Type WT/FT Type Type Diameter 65-45-12 (lbs) G2 80-55-06 Inches A/C C/F A/C C/F A/C C/F A/C C/F 3-3/4 36.8 34.6 X X X X X 4 41.7 39.3 X X X X X 4-1/8 44.6 41.8 X 4-1/4 47.2 44.4 X X X 4-3/8 50.0 47.0 X 4-1/2 52.8 49.8 X X X 4-5/8 55.6 52.5 X X 4-3/4 58.6 55.4 X X X 5 64.7 61.4 X X X 5-1/4 71.6 67.7 X X X 5-1/2 78.4 74.3 X X X 5-3/4 85.4 81.2 X X X 6 92.8 88.4 X X X 6-1/4 101.0 X X X 6-1/2 109.0 X X X 6-3/4 117.3 X X X 7 126.0 X X X 7-1/4 135.6 X X X 7-1/2 144.9 X X X 7-3/4 154.5 X X X 8 164.4 X X X 8-1/4 175.6 X X 8-1/2 186.2 X X X 8-3/4 197.0 X 9 208.1 X X X 9-1/4 221.3 X X 9-1/2 233.1 X X X 10 257.7 X X X 10-1/4 277.9 X 10-1/2 291.1 X X X 11 318.5 X X X 11-1/2 357.7 X X 12 387.9 X X X 12-1/2 419.4 X 13 452.0 X X X 14 521.1 X X X 15 595.0 X X X 16 673.8 X X X 17 773.1 X X 18 862.6 X X X 19 957.0 X 20 1056.3 X X X 21 1093.5 X X 22 1199.5 X X 23 1310.4 X X 24 1426.2 X X 25 1546.9 X X NOTE: A/C refers to As-Cast • C/F refers to Cold Finished

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alro.com

DURA-BAR ROUNDS NI-RESIST STOCK LENGTHS 72”



Nominal Diameter Inches

201 Type 1 Ni-Resist

Ni-Resist Availability

WT/FT (lbs) A/C C/F

X= In Stock A/C C/F

1 2.5 X 1-1/4 3.9 X 1-1/2 5.6 X 1-5/8 6.6 X 1-3/4 7.6 X 2 10.0 X 2-1/8 11.3 X 2-1/4 12.6 X 2-1/2 15.6 X 2-3/4 18.9 X 3 22.5 X 3-1/4 26.4 X 3-1/2 30.6 X 3-3/4 35.1 X 4-1/2 54.1 X 5 66.3 X 5-1/2 80.3 X 6 95.1 X

Production/Precision Cold Sawing Available for Cast Iron Bars

Alro can produce square, near burr-free cast iron production pieces through 6" diameter square/parallel within +/- .005"

17-10

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DURA-BAR TYPE 65-45-12 FLATS (DUCTILE IRON) As-Cast Size (inches)

Length (inches)

Max. Finish Size (inches)

1.500 X 2.250 1.500 X 3.250 1.750 X 3.250 2.150 X 2.930 2.250 X 3.250 2.250 X 4.250 2.500 X 4.250 2.550 X 2.930 2.750 X 3.000 3.250 X 4.250 3.250 X 4.750 3.250 X 5.250 3.250 X 5.750 3.250 X 6.250 3.500 X 4.550 3.750 X 4.750 4.250 X 5.250 4.250 X 5.500 4.250 X 5.750 4.250 X 6.250 4.250 X 6.750 4.250 X 7.250 4.250 X 8.250 4.750 X 6.250 5.000 X 6.500 5.250 X 6.250 5.250 X 7.250 5.250 X 8.250 5.780 X 8.150 6.080 X 9.040 6.250 X 7.250 6.250 X 8.250 7.250 X 10.250 7.250 X 11.875 7.680 X 9.180 8.000 X 21.000 8.190 X 11.190 8.250 X 12.250 8.750 X 9.250 8.750 X 10.750 8.770 X 13.500 9.300 X 11.500 9.750 X 13.500 10.250 X 12.250 10.340 X 13.540

69 69 69 74 72 72 69 74 72 72 72 72 72 72 73 72 72 72 72 72 72 72 72 72 72 72 72 72 60 77 72 72 72 72 79 72 75 72 72 73 83 79 72 72 79

1.300 X 3.070 1.300 X 3.300 1.570 X 3.070 1.970 X 2.750 2.070 X 3.070 2.070 X 4.070 2.320 X 4.070 2.350 X 2.730 2.550 X 2.800 3.050 X 4.050 3.050 X 4.550 3.050 X 5.050 3.050 X 5.550 3.050 X 6.050 3.300 X 4.350 3.550 X 4.550 4.026 X 5.026 4.026 X 5.276 4.026 X 5.526 4.026 X 6.026 4.026 X 6.526 4.026 X 7.026 4.026 X 8.026 4.526 X 6.026 4.776 X 6.276 5.026 X 6.026 5.026 X 7.026 5.026 X 8.026 5.556 X 7.926 5.830 X 8.790 6.000 X 7.000 6.000 X 8.000 7.000 X 10.000 7.000 X 11.625 7.430 X 8.930 7.500 X 20.500 7.940 X 10.940 8.000 X 12.000 8.374 X 8.874 8.374 X 10.374 8.394 X 13.124 8.924 X 11.124 9.375 X 13.125 9.874 X 11.874 9.964 X 13.164

Pounds (per ft) 10.536 15.210 17.740 19.700 22.800 29.800 34.160 23.300 25.700 43.100 48.200 53.200 58.300 63.400 49.700 55.500 69.600 72.900 76.200 82.900 89.500 96.100 109.400 92.600 101.400 102.400 118.800 135.100 176.400 171.500 141.375 162.160 231.855 268.600 220.000 524.200 285.900 315.300 252.500 293.500 369.400 333.700 410.850 391.800 436.800

NOTE: Pounds per foot are based on As-Cast size.

17-11

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DURA-BAR TYPE 65-45-12 FLATS (DUCTILE IRON)

As-Cast Size (inches) 10.930 X 14.200 11.340 X 12.700 12.100 X 12.400 12.540 X 14.540 14.000 X 21.000 15.500 X 17.500 18.500 X 22.000

Length (inches) 92 74 74 72 54 75 52

Max. Finish Size (inches) 10.554 X 13.824 10.964 X 12.324 11.600 X 11.900 12.040 X 14.040 13.500 X 20.500 14.500 X 16.500 18.000 X 21.500

Pounds (per ft) 484.200 449.300 468.100 568.900 917.300 846.300 1269.300

DURA-BAR TYPE G2 FLATS (GRAY IRON) STOCK LENGTHS 72”

Pounds Max. Finish Size As-Cast Size (per ft) (inches) (inches) 0.75 X 1.50 0.550 X 1.300 3.5 1.25 X 2.25 1.070 X 2.070 8.8 1.25 X 3.25 1.050 X 3.050 12.7 1.25 X 4.25 1.000 X 4.000 16.6 1.25 X 5.25 1.000 X 5.000 20.5 1.25 X 6.25 0.874 X 5.874 24.4 1.25 X 10.25 0.874 X 9.874 40.0 1.50 X 2.25 1.320 X 2.070 10.6 1.50 X 4.25 1.300 X 4.050 19.9 1.50 X 5.25 1.250 X 5.000 24.6 1.50 X 6.25 1.250 X 6.000 29.2 1.50 X 10.25 1.124 X 9.874 48.0 1.75 X 4.25 1.550 X 4.050 23.2 1.75 X 6.25 1.500 X 6.000 34.1 2.00 X 2.50 1.820 X 2.320 15.6 2.25 X 3.25 2.070 X 3.070 22.8 2.25 X 4.25 2.070 X 4.070 29.8 2.25 X 5.25 2.050 X 5.050 36.9 2.25 X 6.25 2.050 X 6.050 43.9 2.50 X 3.25 2.320 X 3.070 25.4 2.50 X 4.25 2.320 X 4.070 33.2 2.50 X 6.25 2.300 X 6.050 48.8 2.50 X 8.25 2.250 X 8.000 64.4 2.75 X 3.50 2.550 X 3.300 30.0 2.75 X 4.25 2.550 X 4.050 36.5 3.25 X 4.25 3.050 X 4.050 43.1 3.25 X 6.25 3.050 X 6.050 63.4 3.25 X 7.25 2.875 X 6.874 73.5 4.25 X 4.50 4.026 X 4.276 59.7 4.25 X 5.25 4.026 X 5.026 69.6 4.25 X 6.25 4.026 X 6.026 82.9 5.25 X 6.25 5.026 X 6.026 102.4 8.00 X 21.00 7.500 X 20.500 524.2 14.000 X 21.000 13.500 X 20.500 917.3 NOTE: Pounds per foot are based on As-Cast size.

17-12

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DURA-BAR TYPE G2 SQUARES (GRAY IRON)

As-Cast Size (inches) 1.50 X 1.50 2.25 X 2.25 2.50 X 2.50 3.00 X 3.00 3.25 X 3.25 4.25 X 4.25 5.25 X 5.25 6.25 X 6.25 7.25 X 7.25 8.25 X 8.25 9.25 X 9.25 10.25 X 10.25 12.25 X 12.25

Length (inches) 72 72 72 72 72 72 72 72 72 72 72 72 72

Max. Finish Size (inches) 1.320 X 1.320 2.070 X 2.070 2.320 X 2.320 2.800 X 2.800 3.050 X 3.050 4.026 X 4.026 5.026 X 5.026 6.000 X 6.000 7.000 X 7.000 8.000 X 8.000 8.874 X 8.874 9.874 X 9.874 11.750 X 11.750

Pounds (per ft) 7.0 15.9 19.5 28.1 33.0 56.4 86.0 121.9 164.0 212.4 267.0 327.8 468.2

DURA-BAR TYPE 65-45-12 SQUARES (DUCTILE IRON)

As-Cast Size (inches) 2.25 X 2.25 2.75 X 2.75 3.25 X 3.25 3.75 X 3.75 4.25 X 4.25 5.25 X 5.25 6.18 X 6.18 6.25 X 6.25 6.68 X 6.68 7.25 X 7.25 8.25 X 8.25 9.375 X 9.375 10.375 X 10.375

Length (inches) 72 72 72 72 72 72 74 72 74 72 72 72 72

Max. Finish Size (inches) 2.070 X 2.070 2.550 X 2.550 3.050 X 3.050 3.550 X 3.550 4.026 X 4.026 5.026 X 5.026 5.930 X 5.930 6.000 X 6.000 6.430 X 6.430 7.000 X 7.000 8.000 X 8.000 9.000 X 9.000 10.000 X 10.000

Pounds (per ft) 14.00 23.67 33.00 43.64 56.40 86.00 121.90 121.90 139.20 164.00 212.40 274.20 335.80

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17-13

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DURA-BAR TUBING As-Cast Size OD X ID (inches) 3.500 X 1.500 4.000 X 2.000 4.500 X 1.500 4.500 X 2.500 5.000 X 2.000 5.000 X 3.000 5.500 X 2.500 5.500 X 3.500 6.000 X 3.000 6.000 X 4.000 6.500 X 2.500 6.500 X 3.500 6.500 X 4.500 7.000 X 3.000 7.000 X 4.000 7.000 X 5.000 7.500 X 2.500 7.500 X 3.500 7.500 X 4.500 7.500 X 5.500 8.000 X 3.000 8.000 X 5.000 8.000 X 6.000 8.500 X 5.500 9.000 X 4.000 9.000 X 7.000

Tube Length (inches) 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72

Pounds per ft 28.4 34.2 48.9 40.4 57.2 46.2 66.0 52.5 74.3 58.4 96.6 83.1 64.8 107.4 91.5 70.7 132.5 119.0 100.7 77.4 145.8 109.1 83.4 118.6 173.7 96.5

Gray Iron G-2

Ductile Iron 65-45-12 80-55-06 x x x x x x x x x x x x x x x x x x x x x x x x x x

x x x x x x x x x x x x x x x x x x x x x x x x x x

Alro’s Production/Precision Sawing­ Production/Precision Sawing to Your Specification

Your Product Cut To Precision... Length...

Squareness...

Surface Finish... Angle Iron

Rounds

Round Tubing

Channel



17-14

Hex

Squares

Square Tubing

(888) 888-ALRO

2 5 7 6

Flat Bar

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DURA-BAR PLATE 2 Sides Milled, Stress Relieved Size (inches)

7.750 7.750 7.750 13.750 13.750 13.750

X X X X X X

20.50 20.50 20.50 20.50 20.50 20.50

Length (inches)

Grade

Finish

72 72 72 72 72 72

4512 5506 G2 4512 5506 G2

2 sides milled 2 sides milled 2 sides milled 2 sides milled 2 sides milled 2 sides milled

DURA-BAR PLATE 4 Sides Milled, Stress Relieved

Size (inches) 7.50 X 20.50 7.50 X 20.50 7.50 X 20.50 13.50 X 20.50 13.50 X 20.50 13.50 X 20.50

Length (inches) 72 72 72 72 72 72

Grade

Finish

4512 5506 G2 4512 5506 G2

4 sides milled 4 sides milled 4 sides milled 4 sides milled 4 sides milled 4 sides milled

DURA-BAR TYPE 65-45-12 PRECISION DUPLEX MILLED RECTANGLES (DUCTILE IRON) 4 Sides Duplex Milled Size (inches)

1.530 X 2.780 1.500 X 3.000 1.600 X 2.000 1.750 X 2.440 1.750 X 2.750 2.000 X 2.500 2.000 X 2.500 2.000 X 3.000 2.000 X 4.000 2.000 X 6.000 2.030 X 2.530 2.030 X 3.030 2.030 X 4.030 2.050 X 2.800 2.250 X 4.000 2.250 X 4.000 2.440 X 5.000

Length (inches) 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72

Pounds (per ft) 13.27 14.20 9.98 13.32 15.02 16.00 15.60 18.88 24.96 37.44 15.70 19.20 25.52 17.90 28.08 28.90 38.06

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DURA-BAR TYPE 65-45-12 PRECISION DUPLEX MILLED RECTANGLES (DUCTILE IRON) 4 Sides Duplex Milled Size (inches) 2.500 X 3.000 2.500 X 3.250 2.500 X 4.000 2.500 X 4.500 2.500 X 5.000 2.500 X 6.000 2.530 X 2.780 2.530 X 4.030 2.530 X 4.280 2.530 X 4.530 2.530 X 4.750 2.660 X 3.500 2.850 X 3.650 3.000 X 4.000 3.000 X 5.000 3.000 X 5.000 3.000 X 5.130 3.030 X 3.530 3.030 X 4.030 3.030 X 4.530 3.030 X 5.030 3.030 X 5.130 3.030 X 5.530 3.030 X 6.030 3.250 X 5.400 3.400 X 3.500 3.500 X 4.000 3.500 X 4.500 3.500 X 5.630 3.500 X 6.000 3.500 X 6.000 3.500 X 6.250 3.500 X 8.000 3.530 X 4.030 3.530 X 4.530 3.530 X 5.030 3.630 X 6.030 3.750 X 4.500 4.000 X 5.000 4.000 X 5.000 4.000 X 5.500 4.000 X 6.000

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Length (inches) 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72

Pounds (per ft) 23.40 25.35 31.20 35.10 39.00 48.00 21.94 31.81 33.79 35.76 37.50 29.05 32.46 37.44 48.00 46.80 48.02 32.70 37.40 42.00 47.55 48.50 52.28 57.01 54.76 37.13 43.68 49.14 61.48 67.00 65.52 68.25 87.36 44.39 49.58 55.40 72.06 52.65 62.40 68.60 68.64 74.88

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DURA-BAR TYPE 65-45-12 PRECISION DUPLEX MILLED RECTANGLES (DUCTILE IRON) 4 Sides Duplex Milled Size (inches)

4.030 X 4.530 4.030 X 5.030 4.030 X 5.530 4.030 X 6.030 4.030 X 7.030 4.250 X 5.750 4.500 X 5.000 4.500 X 7.130 4.500 X 7.250 4.530 X 6.030 4.530 X 8.030 4.590 X 8.100 4.700 X 5.300 5.000 X 5.000 5.000 X 6.000 5.000 X 7.000 5.000 X 7.630 5.000 X 8.500 5.030 X 5.030 5.030 X 5.800 5.030 X 6.030 5.030 X 7.030 5.030 X 8.030 5.030 X 9.530 5.510 X 7.880 5.700 X 10.750 6.000 X 7.000 6.020 X 14.000 6.030 X 7.030 6.030 X 7.530 6.030 X 8.030 6.030 X 9.780 6.030 X 10.000 6.414 X 7.738 6.500 X 7.000 6.500 X 8.000 6.500 X 9.750 6.530 X 8.030 6.750 X 10.500 6.920 X 8.690 7.000 X 8.000 7.030 X 8.030 7.030 X 9.030 7.030 X 10.030

Length (inches) 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 74 72 72 72 72 72 72 79 72 72 72 72

Pounds (per ft) 56.96 63.25 69.53 74.40 88.39 78.33 70.20 100.10 101.79 83.60 113.49 115.99 77.72 78.00 93.60 109.20 119.03 132.60 77.40 91.02 94.63 110.33 126.02 149.56 135.47 191.18 131.04 262.95 132.25 141.67 151.07 184.00 202.80 154.85 162.24 166.00 197.73 163.60 227.00 187.62 174.72 176.13 198.06 219.99

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DURA-BAR TYPE 65-45-12 PRECISION DUPLEX MILLED RECTANGLES (DUCTILE IRON) 4 Sides Duplex Milled Size (inches) 7.130 X 9.750 7.530 X 8.030 7.530 X 11.250 8.000 X 10.000 8.050 X 10.050 8.130 X 10.000 8.160 X 10.780 8.180 X 8.900 8.180 X 10.000 8.188 X 9.000 8.188 X 10.000 8.500 X 12.630 8.690 X 13.100 8.750 X 12.630 9.030 X 11.030 9.500 X 14.000 10.050 X 13.050 11.030 X 12.030 12.040 X 14.040 13.500 X 20.500 13.830 X 14.430 15.290 X 17.040

Length (inches) 72 72 72 72 72 72 72 72 72 72 72 72 72 60 79 79 79 74 72 54 82 75

Pounds (per ft) 216.90 188.65 264.30 249.60 252.42 253.66 274.45 227.14 255.22 229.91 255.47 334.95 355.18 344.80 310.78 414.96 409.20 414.00 527.41 863.46 622.65 812.89

Dura-Bar Continuous Cast Iron Bar contains graphite which gives this product excellent free machining characteristics.

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DURA-BAR TYPE 65-45-12 PRECISION DUPLEX MILLED SQUARES (DUCTILE IRON) 4 Sides Duplex Milled Size (inches) 1.75 X 1.75 1.75 X 1.75 1.78 X 1.78 2.00 X 2.00 2.00 X 2.00 2.03 X 2.03 2.03 X 2.03 2.05 X 2.05 2.50 X 2.50 2.50 X 2.50 2.53 X 2.53 2.78 X 2.78 3.00 X 3.00 3.03 X 3.03 3.50 X 3.50 3.53 X 3.53 3.75 X 3.75 3.78 X 3.78 4.00 X 4.00 4.00 X 4.00 4.03 X 4.03 4.50 X 4.50 4.53 X 4.53 4.88 X 4.88 5.06 X 5.06 6.00 X 6.00 6.03 X 6.03 6.53 X 6.53 7.03 X 7.03 7.53 X 7.53 8.00 X 8.00 8.03 X 8.03 8.50 X 8.50 9.05 X 9.05 9.50 X 9.50 10.00 X 10.00 10.03 X 10.03 11.05 X 11.05 12.03 X 12.03 18.00 X 18.00

Length (inches) 72 73.5 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 72 74 72 72 72 72 72 72 72 72 72 74 74 35

Pounds (per ft) 9.56 9.45 9.70 12.48 12.60 12.60 12.86 17.91 19.50 19.52 19.60 24.11 25.10 28.10 38.22 38.10 43.88 44.58 49.92 48.80 49.70 63.18 64.03 74.30 79.88 112.32 113.45 133.04 154.19 176.91 199.68 201.18 225.42 255.54 281.58 312.00 313.88 380.96 451.53 1010.88

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TOLERANCES

ROUNDS

This section lists Dura-Bar dimensional tolerances. Metallurgical tolerances and mechanical properties are listed under each metal grade in the specification section. Customer specifications may be written from the information contained in this section. If tighter tolerances or additional testing are required for a special make item, a specific customer specification may be written.

ROUNDS

Round bars are made with sufficient stock on the outside diameter to guarantee clean-up at the nominal dimensions. Stock allowances and allowable deviations for round bars are listed in Table 1. Stock Allowance Ductile Iron Variation (+/-) & All Metal Ni-Resist Specs (inches) (inches)

Stock Allowance



Nominal Diameter Bar Size (inches)

Gray Iron (inches)

00.750 - 01.250 01.251 - 02.000 02.001 - 03.000 03.001 - 04.000 04.001 - 05.000 05.001 - 06.000 06.001 - 07.000 07.001 - 08.000 08.001 - 09.000 09.001 - 10.000 10.001 - 11.000 11.001 - 16.000 16.001 - 18.000 18.001 - 20.000

0.085 0.090 0.110 0.125 0.140 0.155 0.170 0.190 0.216 0.254 0.400 0.582 0.762 0.762

0.088 0.095 0.118 0.136 0.154 0.172 0.190 0.213 0.242 0.283 0.432 0.623 0.815 0.819

0.017 0.024 0.030 0.038 0.048 0.055 0.062 0.085 0.108 0.129 0.150 0.206 0.262 0.262

COLD FINISH

Cold finish centerless turning tolerances are listed in the table below. Nominal Length (inches)

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Bar Diameter (inches)

Cold Finish Tolerance* (inches)

72 0.750 - 4.00 +0.010/-0.000 72 4.001 - 6.00 +0.015/-0.000 144 0.750 - 3.00 +0.010/-0.000 144 3.001 - 4.00 +0.015/-0.000 Centerless turning tolerance is +0.003”/+0.008”.

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TOLERANCES FLAT BARS

Dura-Bar flats are made to the actual dimensions. Clean-up stock must be considered when ordering. Minimum clean-up stock allowances are shown in the table below. Ratio (Width:Height) - (inches) 3.000 5.000 8.000 and 0.000 2.000 thru thru Height thru thru up 4.999 7.999 (inches) 1.999 2.999 00.750 - 01.500 0.090 0.100 0.125 0.188 0.188 01.501 - 02.500 0.090 0.100 0.125 0.125 0.188 02.501 - 04.000 0.100 0.188 0.250 0.250 04.001 - 06.000 0.112 0.188 0.250 - 06.001 - 08.500 0.125 0.250 0.250 - 08.501 - 11.500 0.188 0.250 - - 11.501 - 14.125 0.250 - - - 14.126 - 20.000 0.500 - - - - Clean-up stock for special shapes is based on the maximum width and the maximum height of the cross section. Dimension in the vertical center of flats and shapes may be larger than the vertical ends. Allowable swell is based on the dimension of the bar according to the data in the table below.



Height (inches) 00.750 - 01.500 01.501 - 02.500 02.501 - 04.000 04.001 - 06.000 06.001 - 08.500 08.501 - 11.500 11.501 - 14.125 14.126 - 18.000 18.001 - 20.000

0.000 thru 1.999 - - - 0.143 0.153 0.163 0.173 0.250 0.500

Ratio (Width:Height) - (inches) 3.000 5.000 8.000 and 2.000 thru thru thru up 4.999 7.999 2.999 - - 0.350 0.460 - 0.262 0.370 0.485 0.189 0.282 0.395 0.209 0.307 - 0.234 0.337 - 0.254 - - - - - - - - - - - -

Swell allowance for special shapes is based on the maximum width and the maximum height of the cross section.

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TOLERANCES LENGTH

Continuous cast bars are notched and broken off on the production line in standard lengths of 6 feet and 12 feet. (Larger bars will be shorter because of their weight.) Stock is added on to the break-off length in order to guarantee the nominal length. The stock allowance for bar lengths is shown in the table below.

Tolerance on Standard Lengths Non-Standard Nominal Bar 6-Foot Bars Length (inches) Diameter 12-Foot Bars (inches) (inches) (inches) 00.625 - 03.999 72 - 74.5 144 - 147 Nominal +3 04.000 - 09.999 72 - 75.5 144 - 148 Nominal +4 10.000 - 18.000 72 - 76.0 144 - 149 Nominal +5 19.000 57 - 60.5 - Nominal +5 20.000 54 - 57.5 - Nominal +5

DUPLEX MILLED TOLERANCES

• Standard Milled Tolerances are +.005”/-.000” on Height “A”/Width”B”. Tolerances produced to "+.010/-000 on Height "A and Width "B" are available upon request

• Maximum Milled Length “D” up to 84”



• Milled Height/Width “A&B” 1.25”-25.00” Square



• Square, Parallel and Flat Within 0.010” in any 6.000” section (C)

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