What Grade Is A335 Material?

Release Tme: 2024-04-15

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ASTMA335 seamless steel pipe ASTMA335M alloy steel pipe
"Specification for Ferritic Alloy Steel Seamless Steel Pipes for High Temperature Use"
Product materials/grades include: P1, P2, P5, P5B., P5C, P9, P11, P12, P21, P22, P23, P36, P91 (Type1, Type2). P92
Product specifications: 21.3mm~762mm wall thickness 2.0mm~130mm
Production method: hot rolling, heat treatment in delivery state

ASTM A335 Steel Pipe Chemical Composition:

Material	C	Si	Mn	P	S	Mo	Cr
	%	%	%	%	Max	%	Max
A335 Grade P1	0.10---0.20	0.10---0.50	0.30---0.80	0.025	0.025	0.440.65
A335 Grade P5	Max 0.15	Max 0.50	0.30---0.60	0.025	0.025	0.450.65	4.006.00
A335 Grade P11	0.05---0.15	0.5---1.0	0.30---0.60	0.025	0.025	0.450.65	1.001.50
A335 Grade P12	0.05---0.15	Max 0.50	0.30---0.61	0.025	0.025	0.450.65	0.801.25
A335 Grade P22	0.05---0.15	Max 0.50	0.30---0.60	0.025	0.025	0.871.13	1.902.60

ASTM A335 Steel Pipe Mechanical Properties:

Material	Tensile N/mm2	Strength min N/mm2	Yield %min
A335 Grade P1	Min380	205	30
A335 Grade P5	Min415	205	30
A335 Grade P11	Min415	205	30
A335 Grade P12	Min415	205	30
A335 Grade P22	Min415	205	30

ASTM A335 Steel Pipe Heat Treatment Requirements

ASTM A335 Grade	Heat Treatment Type	Normalizing Temperature Range F [C]	Subcritical Annealing or Tempering Temperature Range F [C]
P5 (b,c)	Full or Isothermal Anneal
	Normalize and Temper	-	1250 [675]
	Subcritical Anneal (P5c only)	-	1325 - 1375 [715 - 745]
P9	Full or Isothermal Anneal
	Normalize and Temper	-	1250 [675]
P11	Full or Isothermal Anneal
	Normalize and Temper	-	1200 [650]
P22	Full or Isothermal Anneal
	Normalize and Temper	-	1250 [675]
P91	Normalize and Temper	1900-1975 [1040 - 1080]	1350-1470 [730 - 800]
	Quench and Temper	1900-1975 [1040 - 1080]	1350-1470 [730 - 800]