United States Steel Corporation KeyBanc Basic Materials & Packaging Conference

September 10, 2014

© 2014 United States Steel Corporation

Forward-looking Statements

This presentation contains forward-looking statements with respect to market conditions, operating costs, shipments and prices. Factors that could affect market conditions, costs, shipments and prices for both North American and European operations include: (a) foreign currency fluctuations and related activities; (b) global product demand, prices and mix; (c) global and company steel production levels; (d) plant operating performance; (e) natural gas, electricity, raw materials and transportation prices, usage and availability; (f) international trade developments, including court decisions, legislation and agency decisions on petitions and sunset reviews; (g) the impact of fixed prices in energy and raw materials contracts (many of which have terms of one year or longer) as compared to short-term contract and spot prices of steel products; (h) changes in environmental, tax, pension and other laws; (i) the terms of collective bargaining agreements; (j) employee strikes or other labor issues; and (k) U.S. and global economic performance and political developments. Domestic steel shipments and prices could be affected by import levels and actions taken by the U.S. Government and its agencies, including those related to CO2 emissions, climate change and shale gas development. Economic conditions and political factors in Europe and Canada that may affect U. S. Steel Europe’s and U. S. Steel Canada’s results include, but are not limited to: (l) taxation; (m) nationalization; (n) inflation; (o) fiscal instability; (p) political issues; (q) regulatory actions; and (r) quotas, tariffs, and other protectionist measures. We present adjusted net income (loss) and adjusted net income (loss) per diluted share, which are non-GAAP measures, as an additional measurement to enhance the understanding of our operating performance and facilitate a comparison with that of our competitors. In accordance with “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, cautionary statements identifying important factors, but not necessarily all factors, that could cause actual results to differ materially from those set forth in the forward-looking statements have been included in U. S. Steel’s Annual Report on Form 10-K for the year ended December 31, 2013, and in subsequent filings for U. S. Steel. United States Steel Corporation

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Overview

World Steel Market

Flat-rolled Segment

Tubular Segment

Europe Segment

Research and Development

The Carnegie Way

United States Steel Corporation

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Global Leader in a Growing Industry

• • • •

13th largest in global steel production in 2013

2nd largest North American flat-rolled producer Largest integrated North American energy tubular producer 2nd largest Central European flat-rolled producer

World Apparent Steel Use (finished steel)

190 155

202 142

184 130

117 84

156 122

139 132

139 129

143 134

148 139

641

660

700

721

741

588

513

529

548

147 111

168 152 124

378

418

447

551

317

420

459

461

389

460

486

501

2000

2006

2007

2008

2009

2010

2011

2012

Rest of World

China

NAFTA

2013 2014E 2015E EU-28

Source: worldsteel association

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North America Flat-rolled Segment Strong Market Share in Value-Added Products

Market Position

Automotive Major supplier to all North American producers Appliances Major supplier to all North American producers Tin mill products Largest tin mill products producer Value-added construction Strong position

Significance

Metallurgically demanding applications with specialized customer service and technical support Just-in-time inventory requirements favor domestic suppliers

Production costs globally competitive Strong diversification through leading positions in key end markets Mini-mills typically do not make these value-added products

United States Steel Corporation

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North America Flat-rolled Segment Future Materials for Future Vehicles Automotive Industry Key Strategic Goals Mass Reduction / Energy Absorption / Occupant Safety Automotive joint venture coating company with Kobe Steel

Future Steel Grades Required

Continuous Annealing Line Project Up to 500,000 tons/year of Cold Rolled Advanced High Strength Steels (AHSS) Designed to produce Cold Rolled AHSS grades required to produce lighter vehicles to meet higher fuel efficiency requirements, while meeting higher safety requirements.

Ongoing R&D on multiple paths and options for Third Generation AHSS Optimum automotive designs will require a suite of 3rd Gen AHSS

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North America Flat-rolled Segment Automotive Steel Industry Outlook 2012 Total Light Vehicle 2022 Total Light Vehicle 1%

11%

17% 27%

48% 4% 58% 34%

2017 Total Light Vehicle 6%

BH / HSLA

32%

40%

Mild Gen-1 AHSS Gen-3 AHSS, PHS Source: USS estimates

22%

United States Steel Corporation

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U. S. Steel Tubular Segment

Raw Tube Capacity – 2.4 mmnt Seamless Facilities: Fairfield Tubular Lorain Tubular

Calgary Sales Office

Tubular Production Facilities Tubular Finishing Facilities

Minnesota Ore Operations

Tubular Sales/Marketing USS Facilities

Hamilton Works

Lake Erie Works Great Lakes Works

Welded Facilities: Lone Star Tubular Well Positioned to Support the North American Energy Market Products & Services Aligned with Market Needs

Lorain Tubular

Gary Works

U. S. Steel Tubular Products HQ Mon Valley Works

Denver Sales Office

Granite City Works

Wheeling Machine Products Wheeling Machine Products Fairfield Works Fairfield Tubular Patriot Premium Threading Services Midland Sales Office

Lone Star Tubular Dallas Sales Office Houston Sales Office Offshore Operations Houston Tubular Processing Houston Operations

United States Steel Corporation

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U. S. Steel Tubular Segment Providing Solutions to the Energy Industry for over a Century

Largest Integrated North American Tubular Producer – Substantial raw material self-sufficiency – 2.4 million net tons of raw tube capacity

Domestic Capabilities – Seamless Products • 1.9” to 26” Outside Diameter and 0.140” to 2.312” wall thickness – Welded Products • 2.375” to 16” Outside Diameter and 0.154” to 0.670” wall thickness

Products & Services Aligned with Market Needs – – – – –

Oil Country Tubular Goods (OCTG) and Standard & Line Pipe Proprietary premium and semi-premium connections Rig Site Services Coupling production and threading Threading, inspection, and accessories

United States Steel Corporation

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U. S. Steel Tubular Segment Market Fundamentals Rigs (Bars)

U.S. Rig Count & Wells per Rig Oil

Gas

Wells/Rig (Line)

Rig count continues to be focused upon oil and liquid rich areas

Drilling efficiencies support more wells drilled per rig

U.S. Apparent Demand

1H 2013

1H 2014

Demand for premium OCTG remains strong

Continued pressure from imports for OCTG, Standard pipe and Line pipe Sources: Baker Hughes, Preston Pipe and Tube

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U. S. Steel Europe Segment

Integrated steel plant in Slovakia

COKE

Annual raw steel production capability – 5.0 mmnt

U. S. Steel Košice Slovak Republic Capacity: 5.0 MNT

Key industries: automotive, construction, service center, packaging and conversion Automotive/appliance galvanizing line Historically favorable growth rates and infrastructure investment in primary geographic market – V4*

2013 Shipments

Significant coke making and power generating capability

14%

V4

Rest of Europe 35%

* Visegrad Group – Czech Republic, Hungary, Poland and Slovakia

51%

Rest of World

United States Steel Corporation

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Research and Development Locations COKE

• Research & Technology Center – Munhall, PA Main Research facilities

• Automotive Center – Troy, MI Automotive customer interface Computer Aided Engineering (CAE) laboratory Mechanical & Material testing laboratory Metallography laboratory

• Tubular Technical Center – Houston, TX • USSE Research & Development – Kosice, Slovakia Pilot operations Simulators Various laboratories

United States Steel Corporation

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The Carnegie Way

United States Steel Corporation

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