A335 Grade P122 K92930 - ASTM A335/A335M-2024(b)

Grade	A335 Grade P122
USA UNS	K92930
Corresponding Standard	ASTM A335/A335M-2024(b) Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Classification	Alloy Steel

A335 Grade P122 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti	W	V	Nb	Zr	B	Al
Minimum Value	0.07	-	-	-	-	10	-	0.3	0.25	0.04	-	1.5	0.15	0.04	-	0.0005	-
Maximum Value	0.14	0.5	0.7	0.02	0.01	11.5	0.5	1.7	0.6	0.1	0.01	2.5	0.3	0.1	0.01	0.005	0.02

A335 Grade P122 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） + Tempering（730~800°C）	≥620	≥400	l: ≥20	HBW: ≤250 HV: ≤265 HRC: ≤25

l=longitudinal；t=transverse

A335GradeP122 Corresponding Standards(Same grade name, different standards)

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