ASME SA335 P11 Ferritic Alloy Steel Seamless Pipe for Fired Heater API661
Chromium and molybdenum are important elements of P11. Chromium, or chrome, improves high-temperature strength, increases oxidation resistance and raises the tensile, yield and hardness at room temperatures. Molybdenum increases the strength, elastic limit, resistance to wear, impact qualities and hardenability. It increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is also the most effective additive for increasing high temperature creep strength, or creep resistance. It also enhances the corrosion resistance of steel and inhibits pitting.
| Alloy steel seamless pipe |
| PIPES | ASTM A335, ASTM A312 |
| PIPES FITTINGS | ASTM A234 |
| FITTINGS & FLANGES | ASTM A182 |
| GRADES | P1/P5/P9/P11/P12/P22/P91 |
| FORM (PIPES) | SEAMLESS |
| 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 |
| Available Shapes : |
| 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. |
ASME SA335 P11 Ferritic Alloy Steel Seamless Pipe
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40
Type : Seamless
End : Plain End, Beveled End
MATERIALS :Alloy Steel Pipe A335 P11
ASME SA335 P11 Ferritic Alloy Steel Seamless Pipe 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 |
ASME SA335 P11 Ferritic Alloy Steel Seamless Pipe 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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ASME SA335 P11 Ferritic Alloy Steel Seamless Pipe for Fired Heater API661 Images
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