Plate products


Plate is steel that is generally more than three-sixteenths inch thick and 48 inches wide. It can be made on either a coiled plate mill, up to one-inch thick, or a discrete plate mill. The coiled plate, or discrete plate, is then cut into sections for specific end uses.

Applications and markets

For plate to be utilized, it must be further processed after shipment from the steel mill. This processing may be preformed by service centers, plate processors, fabricators or original equipment manufacturers (OEMs). Four processes account for the majority of this additional processing: quenching and tempering, forming, thermal-cutting and welding. Download guidelines for processing and fabricating plate steel and learn how to weld T-1™ constructional alloy steels.

Commodity steel plate is used in a variety of applications, such as storage tanks, ships and railcars, large diameter pipe and machinery parts. More specialized steel plate, such as high-strength, low-alloy, heat-treated or alloy plate, can have superior strength and performance characteristics for particular applications such as the manufacture of construction, mining and logging equipment; pressure vessels and oil and gas transmission lines; and the fabrication of bridges and buildings. Quenched and tempered plate is harder and stronger and can be used in products, such as military armor and hard rock mining equipment. View our plate markets and Solutions in Steel™ for plate to learn more.


The physical properties of steel can vary depending on the chemistry of the plate. Our plate specification guide outlines the specific chemistries and mechanical properties of some commonly used plate steels. It also provides the capabiltiies overview of our three plate producing faciltiies in the United States - ArcelorMittal Burns Harbor in Indiana, and ArcelorMittal Coatesville and ArcelorMittal Conshohocken in Pennsylvania.

ArcelorMittal USA has an extensive plate product offering:

Abrasion-resistant steels
Premium alloy steels summary PDF
Hardwear®: 400 - 550F PDF
As-rolled: AR-235 PDF
Cryogenic steels
9% nickel: for use at cryogenic temperatures PDF
Energy market steels
API steels for offshore platform structures PDF
Wind tower applications PDF
Flame cut products
Thermal cutting plate steel shapes PDF
Free-machining steels
Clean-Cut® and C1119™/C1144™: controlled sulfur additions to enhance machinability and extend tool life PDF
High-performance bridge steels
50 ksi (345 MPa) Y.S. (HPS 50W) PDF
70 ksi (485 MPa) Y.S. (HPS 70W) PDF
100 ksi (690 MPa) Y.S. (HPS 100W) PDF
High-strength structural steels
100 ksi (690 MPa) Y.S. (A514, A517 and T-1®) PDF
130 ksi (900 MPa) and 140 ksi (965 MPa) Y.S. (LQ-130 and LQ-140) PDF
Spartan™: A710, Navy HSLA-80/100 and HPS 100W PDF
Gear rack applications: LQ 690 PDF
Laser cutting steels
Low-carbon, control-rolled, high-strength steels
BethStar®: for improved toughness, weldability and formability PDF
Low-sulfur, clean steels
Fineline™ PDF
Magnet steels
HP magnet plate PDF
Military alloy steels
Armor: steels for national defense PDF
Mill edge steels
Mill edge plate: untrimmed long edges and trimmed ends PDF
Mold, tool and die steels
Pressure vessel steels
A516 and A387 PDF
Safety, floor plate steels
Sure-Foot®: a raised grip pattern for enhanced safe footing PDF
Stainless steels - 12% Chromium
Duracorr®: life cycle cost effective 12% Cr PDF
Duracorr® 300: for abrasion and corrosion resistant applications PDF
Duracorr®/A1010: bridge applications and fabrication guidelines PDF
Duracorr® welding guidelines PDF
Steckel rolled steels
SMART® steelmaking system: Steckel Mill Advanced Rolling Technology PDF
Weathering steels
Weathering steels: for unpainted bridges and general construction (Cor-Ten® B) PDF