SA335 Grade P21 K31545 - ASME SA-335/SA-335M-2021

Grade	SA335 Grade P21
	K31545
Corresponding Standard	ASME SA-335/SA-335M-2021 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Classification	Alloy Steel

SA335 Grade P21 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo
Minimum Value	0.05	-	0.3	-	-	2.65	0.8
Maximum Value	0.15	0.5	0.6	0.025	0.025	3.35	1.06

SA335 Grade P21 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 （≥675°C）	≥415	≥205	l: ≥30；t: ≥20

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!