ASTM A242 Alloy Structural Steel

ASTM A242 alloy structural steel description

Category: weathering resistanct steel, high strength low alloy steel
Delivery condition: usually delivered in hot rolled condition,
ASTM A242 Equivalent: 09CuPCrNi-A, Q295GNH in Chinese grade
ASTM A242 plate is high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction intended primarily for use as structural members where savings in weight (mass) or added durability are important. The atmoSPHEric corrosion resistance of ASTM A24 alloy structural steel in most environments is substantially better than that of carbon structural steels with or without copper addition.

ASTM A242 Alloy Steel Composition

Carbon: 0.15 Max, Manganese: 1.00 Max, Phosphorus: 0.15Max, Sulfur: 0.02 Max, Copper: 0.20 Min.
ASTM A242 Alloy Structural Steel Properties

ASTM A242	Plates and Bars			Structural Shapes
	For thickness 3/4 in. (20mm), and under	For thickness 3/4  to 1.5 in. (20 to 40mm)	For thickness 1.5 to 4 in.40 to 100mm)	For range or leg thickness 1.5 in. (40mm), and under	For range thickness over 1.5 in. (40mm) to 2 in. (50mm)	For range thickness over 2 in. (50mm)
Tensile Strength,  ksi (MPa) min.	70 (480)	67 (460)	63 (435)	70 (485)	67 (460)	63 (435)
Yield Strength, ksi (MPa) min.	50(345)	46(315)	42(290)	50(345)	46(315)	42(290)
Elongation in 8 in. (200). min. %	18	18	18	18	18	18
Elongation in 2 in. (50) min. %	21	21	21	21	21	21

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