A335 Grade P23 K40712 - ASTM A335/A335M-2024(b)

Grade	A335 Grade P23
USA UNS	K40712
Corresponding Standard	ASTM A335/A335M-2024(b) Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Classification	Alloy Steel

A335 Grade P23 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N	Ti	W	V	Nb	B	Al	More
Minimum Value	0.04	-	0.1	-	-	1.9	-	0.05	-	0.005	1.45	0.2	0.02	0.001	-	Ti/N≥3.5*
Maximum Value	0.1	0.5	0.6	0.03	0.01	2.6	0.4	0.3	0.015	0.06	1.75	0.3	0.08	0.006	0.03	Ti/N≥3.5*

A335 Grade P23 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
normalizing (1040~1080°C) air or accelerated cooling and tempering (730~800°C)	≥510	≥400	l: ≥20	HBW: ≤220 HV: ≤220 HRBW: ≤97

l=longitudinal；t=transverse

A335GradeP23 Corresponding Standards(Same grade name, different standards)

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