Product Details

ASTM A335 is the standard specification for seamless ferritic alloy steel pipe for high temperature service. It covers sever grades: P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122, out of which P5, P9, P11, P22, P91, and P92 are most widely utilized in practice. The specification covers nominal wall and minimum wall chrome-molybdenum( also known as Cr-Mo, or Cr-Moly) alloy steel pipe intended for high-temperature application. Pipe ordered to this specification shall be suitable for bending, flanging(vanstoning), and similar forming operations, and for fusion welding. ASTM A335 P11, P22, P91 and P92 are commonly used in power plants and chemical-petrochemical industry, while P9 and P5 are mainly used in petroleum refineries. Hebei Metals supplies ASTM A335 Cr-Mo alloy steel seamless pipes sized from 1/2″ to 24″(NPS15 ~ NPS600) ranging in wall thickness from SCH20 to XXS or even thicker.
A335 seamless steel pipe
Chemical Composition(%)：
Grade
UNS Designation
Composition, %


Carbon
Manganese
Phosphorus,
Sulfur
Silicon




P1
K11522
0.10–0.20
0.30–0.80
0.025
0.025
0.10–0.50
—
0.44–0.65
P2
K11547
0.10–0.20
0.30–0.61
0.025
0.025
0.10–0.30
0.50–0.81
0.44–0.65
P5
K41545
0.15 max
0.30–0.60
0.025
0.025
0.50 max
4.00–6.00
0.45–0.65
P9
S50400
0.15 max
0.30–0.60
0.025
0.025
0.25–1.00
8.00–10.00
0.90–1.10
P11
K11597
0.05–0.15
0.30–0.60
0.025
0.025
0.50–1.00
1.00–1.50
0.44–0.65
P12
K11562
0.05–0.15
0.30–0.61
0.025
0.025
0.50 max
0.80–1.25
0.44–0.65
P15
K11578
0.05–0.15
0.30–0.60
0.025
0.025
1.15–1.65
—
0.44–0.65
P21
K31545
0.05–0.15
0.30–0.60
0.025
0.025
0.50 max
2.65–3.35
0.80–1.06
P22
K21590
0.05–0.15
0.30–0.60
0.025
0.025
0.50 max
1.90–2.60
0.87–1.13
Mechanical Properties:
Standard
Grade
Tensile
strength
Yield strength
(MPa)
Elongation
(%)
Impact
(J)
not less than
not less than
not less than
ASTM A 335M/
ASME SA-335M
P1-P11
≥380
205

–
P12-P21
≥415
220

–
P23
≥515
100

–
Grade: P1, P2, P5, P9, P11, P12, P15, P21, P22
OD: 21.3mm-508mm, 1/2’’-20’’
WT: 2.11mm-40mm
Port Form: PE BE

Astm A335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service

ASTM A335 standard is issued under the fixed designation A 335/A 335M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Astm A335 standard specication for seamless ferritic alloy-steel pipe

This specification covers nominal (average) wall seamless alloy-steel pipe intended for high-temperature service (Mote 1). Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.

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Grade	UNS Designation	Composition, %
				Carbon	Manganese	Phosphorus,	Sulfur	Silicon
				Carbon	Manganese			Silicon
P1	K11522	0.10–0.20	0.30–0.80	0.025	0.025	0.10–0.50	—	0.44–0.65
P2	K11547	0.10–0.20	0.30–0.61	0.025	0.025	0.10–0.30	0.50–0.81	0.44–0.65
P5	K41545	0.15 max	0.30–0.60	0.025	0.025	0.50 max	4.00–6.00	0.45–0.65
P9	S50400	0.15 max	0.30–0.60	0.025	0.025	0.25–1.00	8.00–10.00	0.90–1.10
P11	K11597	0.05–0.15	0.30–0.60	0.025	0.025	0.50–1.00	1.00–1.50	0.44–0.65
P12	K11562	0.05–0.15	0.30–0.61	0.025	0.025	0.50 max	0.80–1.25	0.44–0.65
P15	K11578	0.05–0.15	0.30–0.60	0.025	0.025	1.15–1.65	—	0.44–0.65
P21	K31545	0.05–0.15	0.30–0.60	0.025	0.025	0.50 max	2.65–3.35	0.80–1.06
P22	K21590	0.05–0.15	0.30–0.60	0.025	0.025	0.50 max	1.90–2.60	0.87–1.13

Standard	Grade	Tensile strength	Yield strength (MPa)	Elongation (%)	Impact (J)
Standard	Grade	Tensile strength	not less than	not less than	not less than
ASTM A 335M/ ASME SA-335M	P1-P11	≥380	205		–
	P12-P21	≥415	220		–
	P23	≥515	100		–