ASTM A335 P9 Seamless Alloy Steel Tubes For Boiler And Heat Exchanger Applications
Alloy Steel Seamless tubes ASMES A335 P9
| Alloy steel seamless pipe/tube | |
| PIPES & TUBES | : ASTM A335, ASTM A213, ASTM A691 |
| PIPES FITTINGS | : ASTM A234 |
| FITTINGS & FLANGES | : ASTM A182 |
| GRADES | : P1/P5/P9/P11/P12/P22/P91 & T5/T9/T11/T22/T91 |
| FORM (PIPES) | : SEAMLESS / E.R.W / EFSW |
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YUHONG SPECIAL STEEL is Exporters & Supplier of alloy steel seamless pipe, alloy steel pipe gr p5, alloy steel pipe gr p11, alloy steel pipe gr p9, alloy steel pipe gr p22, alloy steel pipe gr p91, ASTM A335, ASTM A213, ASTM A691. |
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| Available Shapes : | |
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Tubes & Pipes (SEAMLESS ) up to 30". Tubes & Pipes (ERW ) up to 60". Sheets / plates up to 150 MM. Rod / Bar up to 350 MM. Circle up to 1000 & Above as per your requirements. thickness up to 200 MM & Above as per requirements. |
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ASTM A335, also known as ASME SA335, is a standard specification for seamless ferritic alloy steel pipe for high-temperature service. The most common alloy steel used in this specification is the P grade, specifically P9.
P9 alloy steel tubes, as specified under ASTM A335 and ASME SA335, are primarily utilized in power generation systems, particularly in steam boiler tubing and superheater tubes where high temperature resistance and strength are required. The 'P9' denotes that the steel is a ferritic alloy with specific chemical compositions that include:
The production of P9 alloy steel seamless tubes typically follows strict quality control measures to ensure compliance with ASTM A335/ASME SA335 standards. This includes rigorous testing for mechanical properties, chemical composition, and dimensional accuracy to guarantee the tubes meet the required specifications for their intended use.
Chemical composition(%):
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
| P11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
| P22 | 0.05-0.16 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 |
| P5 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 |
| P9 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
| P91 | 0.08-0.12 | 0.30-0.60 | 0.020/0.010 | 0.020/0.010 | 0.02-0.50 | 8.00-9.50 | 0.85-1.05 |
| P92 | 0.07-0.13 | 0.30-0.60 | 0.020/0.010 | 0.020/0.010 | ≤0.50 | 8.50-9.50 | 0.30-0.60 |
Mechanical properties:
| Grade | Tensile strength | Yield strength | Elongation |
| P11, P22, P5, P9 | ≥415 | ≥205 | ≥30/20 |
| P91 | ≥585 | ≥415 | ≥20 |
| P92 | ≥620 | ≥440 | ≥20 |
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