ASTM A514 Grade S High‑Strength Quenched & Tempered Alloy Steel Plate

Posted:2026-05-22 15:35:43

ASTM A514 Grade S is a high‑strength quenched and tempered alloy steel plate designed for structural applications requiring exceptional strength‑to‑weight ratio and excellent impact toughness. With a minimum yield strength of 690 MPa, Grade S provides reliable performance under heavy dynamic loads and ensures stable weldability and dimensional accuracy for precision‑fabricated components.
Chemical Composition

Element	C	Mn	P	S	Si	Cr	Mo	V
Max %	≤ 0.21	≤1.00	≤ 0.035	≤ 0.035	≤ 0.60	0.40–0.65	0.15-0.25	0.01–0.08

Mechanical Properties

Property	Yield Strength	Tensile Strength	Elongation	Hardness
Requirement	≥ 690MPa	760-895MPa	≥ 18%	Typical 235–293 HBW

Applications

Heavy‑duty machinery and lifting equipment
Bridge and structural frames
Industrial fabrication and welded assemblies
Construction components requiring high strength and toughness

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ASTM A514 Grade S High‑Strength Quenched & Tempered Alloy Steel Plate

Applications

ASTM A514 Grade S High‑Strength Quenched & Tempered Alloy Steel Plate