ASTM A514 Grade K High‑Strength Quenched & Tempered Steel Plate

Posted:2026-04-17 13:16:39

ASTM A514 Grade K is a high‑strength quenched and tempered alloy steel plate engineered for structural components requiring superior strength‑to‑weight efficiency, stable toughness, and reliable performance under heavy or dynamic loading.
With its elevated yield strength and uniform mechanical behavior, A514 Gr.K is widely used in lifting equipment, heavy machinery frames, industrial structures, and engineered assemblies where reduced weight and high structural integrity are essential. The grade maintains predictable weldability and consistent forming characteristics, supporting precision fabrication and demanding industrial applications.
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

Lifting and hoisting equipment
Heavy machinery and industrial frames
High‑load structural components
Bridge and engineered assemblies
Precision‑fabricated high‑strength parts

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