A335 P9 P91 P92 Alloy Steel Seamless Pipe
A335 P9, P91, and P92 are chromium-molybdenum alloy high-temperature resistant seamless steel pipe series under the American ASTM standard, designed for extremely high temperature and high pressure conditions.
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of a335 p9 p91 p92 alloy steel seamless pipe in China, also supports customized service with low price. Welcome to wholesale discount a335 p9 p91 p92 alloy steel seamless pipe for sale here from our factory. Contact us for free sample.
A335 P9 P91 P92 Seamless Pipe Description
A335 P9, P91, and P92 are chromium-molybdenum alloy high-temperature resistant seamless steel pipe series under the American ASTM standard, designed for extremely high temperature and high pressure conditions.
- Material nature: All are seamless steel pipes with chromium-molybdenum alloy substrate (chromium content is about 8%-9.5%), manufactured by hot rolling or cold drawing process, with high temperature oxidation resistance and pressure bearing capacity.
- Core standard: Implement ASTM A335 standard and meet strict specifications of chemical composition, mechanical properties and heat treatment process.
- Core use: Serves high temperature and pressure bearing systems in the fields of power, petrochemical, nuclear power, etc., such as boiler pipes, reactor pipelines, etc.
GNEE Group, as a famous steel pipe trader in China with 18 years production experience, can provide you with multi-material and multi-standard seamless pipe for high temperature, boiler pipe, alloy seamless pipe, if you need, please contact us immediately.
A335 P9 P91 P92 Alloy Steel Pipe Description
Classification model characteristics
(1) A335 P9
Alloy composition: Basic chromium-molybdenum alloy (chromium ≈ 9%, molybdenum ≈ 1%), carbon content is marked in parts per thousand (such as 16-50Mn, Cr5Mo).
Performance positioning: Withstands high temperatures of 650℃ and pressures above 9.8MPa, focusing on economy and basic heat resistance.
Typical applications: Medium and high pressure pipelines such as superheaters and reheaters in petrochemical industrial boilers.
(2) A335 P91
Alloy upgrade: Add vanadium (V 0.18%-0.25%) and niobium (Nb 0.06%-0.10%) microalloy elements to optimize high temperature strength.
Performance breakthrough: 600℃ thermal strength is 3 times that of P9, and tensile strength is ≥585MPa (625℃);
Excellent long-term plasticity and significantly improved creep resistance.
Core scenarios: Supercritical power plant main steam pipeline (625℃/25MPa), hydrocracking unit.
(3) A335 P92
Tip strengthening: Introducing tungsten (W 1.5%-2.0%) and boron (B 0.001%-0.006%) to achieve multi-element synergistic strengthening.
Performance limit:
Withstands 650℃ ultra-supercritical environment, tensile strength ≥620MPa (650℃);
620℃/100,000 hours endurance strength ≥120MPa, 30% higher than P91.
High-end applications:
Ultra-supercritical boiler main steam pipeline (650℃/28MPa);
Fourth-generation nuclear reactor heat transfer tubes, ethylene cracking quenching system.
Common advantages and differences of A335 P9 P91 P92 alloy seamless pipes
| Features | P9 | P91 | P92 |
|---|---|---|---|
| Maximum temperature | ≤650℃(Economical) | ≤625℃(Enhanced) | ≤650℃(Cutting-edge type) |
| Strength(650℃) | Basic level | Tensile strength ≥585MPa | Tensile strength≥620MPa |
| Cost | ★★★ (Min) | ★★ | ★ (Max) |
| Applicable scenarios | Conventional boilers, petrochemical pipelines | Supercritical power and hydrogenation equipment | Ultra-supercritical units, nuclear energy systems |
GNEE Services
GNEE Certification
Hot Tags: a335 p9 p91 p92 alloy steel seamless pipe, China a335 p9 p91 p92 alloy steel seamless pipe manufacturers, suppliers, factory, A106 GrB Carbon Steel Pipe, Seamless Carbon Steel Tube, Precision Steel Tube for Automobiles, Cs Seamless Pipe, A369-FP1 Carbon Steel Pipe, A213 T12 Alloy Tube
Send Inquiry
