ASTM A335 serves as the standardized specification for seamless ferritic alloy steel pipes designed for applications involving elevated temperatures. This specification encompasses various grades, including P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122, and others. Among these grades, P5, P9, P11, P22, P91, and P92 are the most commonly utilized in practical applications.
Diameter:16-1016mm
Thickness:2---120mm
Steel grade:P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122
Surface: oiled, black painted to prevent rust
Application areas: industrial boilers, power plants, nuclear power plants
UNS Designations and Chemical Composition of ASTM A335 Alloy Steel Pipe:
|
ASTM A335 Chemical Composition % |
|||||||||
|
Grade |
UNS |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
Others |
|
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 |
0.30-0.60 |
0.025 |
0.025 |
0.50 |
4.00-6.00 |
0.45-0.65 |
- |
|
P5b |
K51545 |
0.15 |
0.30-0.60 |
0.025 |
0.025 |
1.00-2.00 |
4.00-6.00 |
0.45-0.65 |
- |
|
P5c |
K41245 |
0.12 |
0.30-0.60 |
0.025 |
0.025 |
0.50 |
4.00-6.00 |
0.45-0.65 |
*A |
|
P9 |
S50400 |
0.15 |
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 |
0025 |
0.025 |
≤0.50 |
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 |
2.65-3.35 |
0.80-1.06 |
- |
|
P22 |
K21590 |
0.05-0.15 |
0.30-0.60 |
0.025 |
0.025 |
0.50 |
1.90-2.60 |
0.87-1.13 |
- |
|
P23 |
K41650 |
0.04-0.10 |
0.10-0.60 |
0.030 |
0.010 |
0.50 |
1.90-2.60 |
0.05-0.30 |
*B |
|
P36 |
K21001 |
0.10-0.17 |
0.80-1.20 |
0.030 |
0.025 |
0.25-0.50 |
0.30 |
0.25-0.50 |
*C |
|
P91 |
K91560 |
0.08-0.12 |
0.30-0.60 |
0.020 |
0.010 |
0.20-0.50 |
8.00-9.50 |
0.85-1.05 |
*D |
|
P92 |
K92460 |
0.07-0.13 |
0.30-0.60 |
0.020 |
0.010 |
0.50 |
8.50-9.50 |
0.30-0.60 |
*E |
|
P122 |
K92930 |
0.07-0.14 |
0.70 |
0.020 |
0.010 |
0.50 |
10.00-11.50 |
0.25-0.60 |
*F |
|
P911 |
K91061 |
0.09-0.13 |
0.30-0.60 |
0.020 |
0.010 |
0.10-0.50 |
8.50-9.50 |
0.90-1.10 |
*G |
Mechanical Properties of ASTM A335 Alloy Steel Pipe:
|
ASTM A335 Grade |
Tensile Strength |
Yield Strength |
Elongation % |
Hardness(HB) |
|||
|
ksi |
MPa |
ksi |
MPa |
Longitudinal |
Transverse |
||
|
P1 |
55 |
380 |
30 |
205 |
30 |
20 |
- |
|
P2 |
55 |
380 |
30 |
205 |
30 |
20 |
- |
|
P5 |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P5b |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P5c |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P9 |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P11 |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P12 |
60 |
415 |
32 |
220 |
30 |
20 |
- |
|
P15 |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P21 |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P22 |
60 |
415 |
30 |
205 |
30 |
20 |
- |
|
P23 |
74 |
510 |
58 |
400 |
20 |
- |
- |
|
P91 |
85 |
585 |
60 |
415 |
20 |
- |
≤250 |
|
P92 |
90 |
620 |
64 |
440 |
20 |
- |
≤250 |
|
P122 |
90 |
620 |
58 |
400 |
20 |
- |
≤250 |
|
P911 |
90 |
620 |
64 |
400 |
20 |
- |
- |
Testing and Inspection:
- Hydrostatic test
- Mechanical tests: transverse or longitudinal tensile test, flattening test, hardness test or bending test
- Non-destructive testing (NDT): ultrasonic testing, eddy current testing, magnetic flux leakage testing
United Steel Industry Co., Ltd can provide ASTM A335 alloy steel pipes at factory prices. Our products have passed ISO9001, SGS and other certificates and can accept third-party testing. We have complete testing and inspection facilities. From product development, raw material supply, production process management, etc., we are standardized in accordance with international quality system standards to provide customers with satisfactory pre-sales, sales, and after-sales services. Contact us anytime: sales@usisteels.com
United Steel Industry As the most important steel pipe manufacturer and exporter in China, in the past 20 years, we have completed more than 100 projects, with partners in more than 100 countries, and established relationships with oil and gas and EPC companies in many countries business relationship.
For more information about the product price, catalog and rolling mill inspection certificate,
please consult:Email:Sales@usisteels.com
