A730 Grade N A238,F - ASTM A 730-1993(R1999) - H2ABC

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Grade	A730 Grade N
Old Grade
Corresponding Standard	ASTM A 730-1993(R1999) Standard Specification for Forgings, Carbon and Alloy Steel, for Railway Use
Classification	Alloy Steel

A730 Grade N Chemical Element Composition Content (%)

Component	P	S
Minimum Value	-	-
Maximum Value	0.045	0.05

A730 Grade N Mechanical Properties

Diameter or Thickness/Bored Wall Thickness d/t/t1 mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
d/t≤102 / t1≤51	Normalized, quenched, and tempered	≥860	≥725	≥16	≥50
102＜d/t≤178 / 51＜t1≤89	Normalized, quenched, and tempered	≥795	≥655	≥16	≥45
178＜d/t≤254 / 89＜t1≤127	Normalized, quenched, and tempered	≥760	≥585	≥16	≥45

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