A588 Weathering

A606/A588 (CORTEN/COR-TEN/Corten) Steel Product Guide

Applications | Specifications | Mechanical and Chemical Data | Tolerances

Overview

Also called COR-TEN/CORTEN/Corten, this is a unique steel alloy. When exposed to the outdoor environment, this material quickly develops an orange-brown rust-colored sheen that actually protects the material underneath it. Additionally, A588 steel exhibits high strength but is 20-30% lighter than comparable alloy steels. It is weldable, formable, and easily machinable. It is frequently used in industrial applications, freight cars, and decorative applications.

COR-TEN is a trademark of U.S. Steel Corp.

Common Trade Names

Weathering Steel

Other Resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

Products

Purchase Angle A588 | Rectangle Bar A588 | Round Bar A588 | Square Bar A588 |

Applications

Industrial applications
Freight cars
Decorative applications

Specifications

ASTM
A588


Physical Properties A588 Weathering
Density	0.28 lb/in3
Ultimate Tensile Strength	70 ksi
Yield Tensile Strength	50 ksi
Shear Modulus	11,600 ksi
Shear Strength	51 ksi
Hardness Rockwell \| Brinell	B86 \| 170
Elongation at Break Percentage	22%
Modulus of Elasticity	29,700 ksi
Poisson's Ratio	0.28
Melting Point	2,580-2,650 °F
Electrical Conductivity	7.4% IACS

Chemistry Information
Element	Percentage
Cr	0.4 - 0.65
Mn	0.9 - 1.25
C	0.1 - 0.22
Cu	0.25 - 0.4
Si	0.15 - 0.3
V	0.02 - 0.1
P	0.04 max
S	0.05 max
Fe	97 - 98.5

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