ASTM A Dimensions and Tolerances. Cut Length Tolerances (all tubing) Manufacture. Finish and Repair. Mandatory Testing

ASTM A 554 – 94 Welded Stainless Steel Mechanical Tubing This specification covers round, square, rectangular and special shaped welded stainless stee...
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ASTM A 554 – 94 Welded Stainless Steel Mechanical Tubing This specification covers round, square, rectangular and special shaped welded stainless steel tubing for use in mechanical applications where appearance, mechanical properties or corrosion resistance is needed. As-welded and cold reduced tubing is covered.

Dimensions and Tolerances • • •

Dimensions. Round tubes normally furnished to this specification are in sizes 0.020 in (0.51 mm) wall thickness. Square and rectangular tubing is normally furnished in sizes up to 51/2 in across flats. Tolerances. Refer to page 3-41. Cut Length Tolerances. See table below.

Cut Length Tolerances (all tubing) Length

Variations in length

Outside Diameter OD

Over

mm 50.8 to 101.6

in 1/16 3/32

mm 1.6 2.4

Under in or mm 0 0

1/8

1/8

3.2 2.4 3.2

0 0 0

3/16

4.8

0

ft 1.2 to 3.0 >1.2 to 3.0

>4 2

>101.6 50.8

3/32

>10 to 24

>3.0 to 7.3

All

All

Manufacture • • • •

Material. Refer to chemical composition table. Manufacturing Process. Tubes are made from flat-rolled stainless steel by automatic welding process without the addition of filler metal. Heat Treatment. As required to meet specification. Marking. Each box, bundle or lift (or piece if individually shipped) to be identified with tag or stencil. Manufacturers name or brand, size, purchase order number, specification number and grade to be included. Bar code may be used for supplementary marking.

Finish and Repair • • • •

Finish. Workmanlike finish free of injurous defects and with smooth ends free of burrs. Surface imperfections 5 x Carbon and 0.60% max 3 Titanium >5 x Carbon and 0.75% max 4 Carbon 0.040% max is necessary for tubes where many drawing passes are required, as with outside diameter 11/2to 2

>38.1 to 50.8

>11/2to 2

>38.1 to 50.8

>11/2to 2

>38.1 to 50.8

>2 to 21/2

>50.8 to 63.5

>2 to 21/2

>50.8 to 63.5

>2 to 21/2

>50.8 to 63.5

>21/2to 31/2

>63.5 to 88.9

>21/2to 31/2 >31/2to 5 >31/2to 5 >5 to 16

Ovality (Thin walled tube)1,3

Wall Thickness (t)

>63.5 to 88.9 >88.9 to 127.0 >88.9 to 127.0 >127.0 to 406.4

0.020 to 0.049 0.020 to 0.065 >0.065 to 0.134 0.025 to 0.065 >0.065 to 0.134 0.025 to 0.049 >0.049 to 0.083 >0.083 to 0.149 0.032 to 0.065 >0.065 to 0.109 >0.109 to 0.165 0.032 to 0.165 >0.165 0.035 to 0.165 >0.165

±

in

%

in

mm 0.51 to 1.24

0.004

mm 0.10

10

0.004

mm 0.10

0.51 to 1.65

0.005

0.13

10

0.005

0.13

>1.65 to 3.40

0.010

0.25

10

0.010

0.25

0.64 to 1.65

0.008

0.20

10

0.008

0.20

>1.65 to 3.40

0.010

0.25

10

0.010

0.25

0.64 to 1.24

0.010

0.25

10

0.010

0.25

>1.24 to 2.11

0.011

0.28

10

0.011

0.28

>2.11 to 3.78

0.012

0.30

10

0.012

0.30

0.81 to 1.65

0.012

0.30

10

0.012

0.30

>1.65 to 2.77

0.013

0.33

10

0.013

0.33

>2.77 to 4.19

0.014

0.36

10

0.014

0.36

0.81 to 4.19

0.014

0.36

10

0.014

0.36

>4.19

0.020

0.51

10

0.020

0.51

0.89 to 4.19

0.020

0.51

10

0.020

0.51

>4.19

0.025

0.64

10

0.025

0.64

All

All

0.001252

10

1.5% OD

Notes 1 OD tolerance includes ovality tolerance except for thin wall tube 2 in/in or mm/mm of circumference 3 Ovality = Difference between maximum and minimum OD Thin wall tube is defined as that with a wall thickness t

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