High strength weathering steel ASTM A242 steel properties

High strength weathering steel ASTM A242 steel properties

ASTM A242 steel is a kind of high strength weathering steel, or atmosphere corrosion resistance steel , or corten steel.

ASTM A242 steel is well known for its weathering ability. When exposed to external conditions, the corrosion-resistant properties of ASTM A242 steel become stronger, even when unpainted. ASTM A242 steel has four times corrosion resistance as much as carbon steel.

ASTM A242 steel properties – mechanical properties:

Grade Min. Yield Strength MPa Tensile Strength MPa
ASTM Nominal Thickness (mm) Nominal Thickness (mm)
Thick mm ≤16 >16 ≤40 >40 ≤63 >63 ≤80 >80 ≤100 >100 ≤150 ≤3 >3 ≤100 >100 ≤150
A242 355 345 335 325 315 295 510-680 470-630 450-600

ASTM A242 steel maintains an excellent strength-to-weight ratio, meeting the strength requirements of carbon steel while reducing weight. ASTM A242 steel is used in a broad range of applications such as phone towers, freight cars, bridge and gusset plates, housing enclosures, etc.