A335 Grade P1 K11522 - ASTM A335/A335M-2024(b)

Grade	A335 Grade P1
USA UNS	K11522
Corresponding Standard	ASTM A335/A335M-2024(b) Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Classification	Alloy Steel

A335 Grade P1 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Mo
Minimum Value	0.1	0.1	0.3	-	-	0.44
Maximum Value	0.2	0.5	0.8	0.025	0.025	0.65

A335 Grade P1 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
full or isothermal anneal or normalize and temper （≥650°C） or subcritical anneal (650~705°C)	≥380	≥205	l: ≥30；t: ≥20

l=longitudinal；t=transverse

A335GradeP1 Corresponding Standards(Same grade name, different standards)

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