ASTM A572 Grade 42 High‑Strength Low‑Alloy Steel Plate

Posted:2026-06-08 16:58:26

ASTM A572 is a high‑strength low‑alloy structural steel widely used in construction, machinery, and heavy engineering applications. It offers an excellent balance of strength, weldability, and toughness, making it suitable for load‑bearing structures and components requiring enhanced mechanical performance. Available in Grades 42 / 50 / 55 / 60 / 65, A572 provides reliable performance under demanding service conditions.
Chemical Composition

Element	C	Mn	P	S	Si	Nb	V
Max %	≤ 0.21	0.80-1.50	≤ 0.030	≤ 0.030	≤ 0.40	0.005-0.05	0.01–0.10

Mechanical Properties

Property	Yield Strength	Tensile Strength	Elongation
Requirement	≥ 290MPa	415-550MPa	≥ 20%

Applications

Steel structures — Frames, beams, columns
Construction machinery — Cranes, loaders, heavy equipment
Transport equipment — Trailers, chassis, support beams
General fabrication — Welded assemblies, formed parts

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