Quick search for ASTM A335 P92 alloy seamless steel pipes in stock! Get inventory, price, and delivery date with one click

Liaocheng, Shandong · January 19, 2026 13:36 | Real-time inventory · Chemical traceability · Physically verifiable · 30-second lock-in of industrial-grade spot goods
ASTM A335 P92 alloy seamless steel pipe, as a martensitic heat-resistant steel, has become the preferred material for main steam pipes and reheat steam pipes in ultra-supercritical thermal power generating units. This material is alloyed and improved based on P91 steel by adjusting the molybdenum content and adding tungsten, boron, and other elements, raising its molybdenum equivalent to about 1.5%, significantly improving its high-temperature strength and creep resistance.
This alloy steel pipe can withstand a working temperature exceeding 600°C, with a tensile strength higher than 950 MPa. Its creep rupture strength at temperatures of 550°C, 600°C, and 625°C after 100,000 hours reaches 199 MPa, 131 MPa, and 101 MPa, respectively, outperforming traditional heat-resistant steels. ‌
Can the P92 tube in your hand really withstand the “hellish” working conditions of 620℃ and 25MPa?
Don’t let “looking like” ruin your machine unit – the real P92 is an industrial artwork with chemical composition precise to 0.01% and physical properties stable to every micron of grain boundary.
Chemical properties: The scientific code of microalloying P92 alloy seamless steel tube manufacturers adopt a special formula containing chromium, molybdenum, vanadium, and other alloy elements to build a strong corrosion-resistant barrier. Its oxidation resistance is comparable to that of P91 steel. After 600°C and 700°C steam oxidation tests, the thickness of oxide scale after 3000 hours remains the same as that of P91 steel. In harsh high-temperature and high-pressure environments, it is like a knight in armor, resisting the erosion of soot and steam, ensuring long-term stable operation of equipment. ‌
P92 is not an ordinary alloy steel; it is a precisely formulated alloy with synergistic effects of tungsten (W), boron (B), and niobium (Nb). Element Content Range (wt%) Functional Role Cr 8.5–9.5 Primary corrosion-resistant layer, forming a stable Cr₂O₃ oxide film W 1.5–2.0 Enhances high-temperature endurance strength, inhibits Laves phase precipitation, and delays microstructural degradation B 0.001–0.006 Grain boundary strengthening agent, significantly enhances creep rupture toughness Nb 0.06–0.10 Forms fine Nb(C,N) precipitates, pinches dislocations, and refines grain size Ni ≤0.40 Controls austenite stability, avoids low-temperature brittleness C 0.08–0.12 Balances carbide precipitation; excessive content reduces toughness
Before each batch leaves the factory, a full-element spectral analysis report (ICP-OES) is provided, with the chemical composition deviation from the ASTM A335M-22 standard being ≤±0.02%. Scanning the QR code reveals the MSDS and furnace number traceability.
Spot goods are not just a slogan, but a systematic delivery capability project. Traditional model: Liaocheng spot goods model. Delivery time: 30-60 days. Shipment within 72 hours. Minimum order quantity: 5 tons. Sold from 1 piece, supports segmented cutting. Quality assurance documents: provided afterwards. Scanned to obtain: MSDS + UT report + heat treatment curve. Price transparency: fixed price, no negotiation. Real-time inventory price + tiered discounts (8% off for orders over 5 tons). Logistics coverage: limited to major regions. Direct delivery to 127 thermal power/gas turbine project sites nationwide
Before leaving the factory, every P92 pipe undergoes 100% ultrasonic flaw detection (in accordance with ASME B31.1 standards), and its end face is laser-engraved with an ASTM A335 P92 steel stamp, allowing for batch traceability to the steel-making furnace number.
Physical properties: “As stable as a rock” at high temperatures
Physical properties: combining strength and flexibility, creating a “guardian” against high temperatures
Low expansion, high fatigue resistance: The linear expansion coefficient of P92 steel is comparable to that of P91 steel, and even lower than that of austenitic steel and P22 steel. This means that under the extreme temperature differences during unit startup and shutdown, P92 steel pipes exhibit stronger resistance to fatigue damage, akin to a warrior tempered by cold and heat, always remaining rock-solid.
High-temperature strength, unparalleled: Its strength at both room and high temperatures surpasses that of P91 steel. Data shows that at high temperatures of 550℃, 600℃, and 625℃, the 100,000-hour creep rupture strength of P92 steel reaches up to 199MPa, 131MPa, and 101MPa respectively, far exceeding similar materials, making it the king of endurance in the “high-temperature battlefield”.
Resilience like a shield, fearless impact: Compared to traditional steel grades, P92 steel combines high-temperature performance with excellent impact toughness at room temperature. Whether it’s sudden changes in temperature or external impacts, it can overcome hardness with softness, safeguarding equipment safety. ‌
Performance Indicators Standard Value (ASTM A335 P92) Liaocheng Spot Actual Measurement Mean Value Industrial Significance Room Temperature Tensile Strength ≥620 MPa 685 MPa Resistance to Impact and Vibration, Maintaining Structural Integrity After Welding 0.2% Yield Strength ≥440 MPa 510 MPa Pressure-bearing Without Deformation, Ensuring Geometric Accuracy of Pipes 620℃/1000h Creep Rupture Strength ≥100 MPa 115 MPa 40% Higher than P91, Lifespan Extended by 2.8 Times Grain Size ≥7 Levels 8–9 Levels Finer Grain Size = Higher Fatigue Resistance, Crack Propagation Rate Reduced by 60% Impact Energy (-20℃) ≥41 J 68 J Resistance to Brittle Fracture in Low-temperature Transportation and Installation Thermal Conductivity (600℃) ≈28 W/(m·K) 27.5 W/(m·K) Uniform Heat Transfer, Avoiding Local Overheating Failure
All in-stock pipes have undergone 100% high-temperature creep simulation verification, with data directly connected to the national-level laboratory of Beizhong Group. Each pipe comes with a heat treatment curve diagram (760℃×2h tempering, cooling rate ≤15℃/min).
Spot system: physical + chemical data, one-click query
Scan to Check Composition: Laser marking on pipe ends → WeChat scanning → Pop up complete chemical composition table + heat treatment process atlas. Select specification to see performance: Φ325×32 → The system automatically matches the 620℃ creep curve, metallographic photos, and UT flaw detection atlas for this specification. Price comparison without guesswork: The price includes chemical testing fee, physical property certification fee, and quality assurance traceability fee, with no hidden costs. Smart Warehouse System: Liaocheng local enterprises deploy a stock management platform to synchronize in real-time the inventory of Φ813mm large-diameter pipes, Φ159mm small-diameter pipes, and all specifications with wall thicknesses ranging from 12 to 45mm.
Digital Twin Factory: Beizhong Group authorizes local manufacturers to adopt its homologous process, utilizing a vertical extrusion press combined with an online heat treatment line, ensuring that the metallographic structure remains stable with a grain size above Grade 7, with MX-type carbonitrides distributed densely, and the creep strength exceeding the ASTM standard by 15%.
Hot-selling List of Spot Market Prices in January 2026 (Core Enterprises in Liaocheng)
According to the latest market research, the price range of ASTM A335 P92 alloy seamless steel pipes fluctuates significantly, ranging from approximately 18,000 yuan to 49,000 yuan per ton.
Price differences are influenced by various factors, including specifications, manufacturers, purchase quantities, and delivery conditions.
Bulk purchasing discounts are a common practice in the industry. For example, Shandong Yuansheng Seamless Steel Tube Co., Ltd. offers more competitive prices for large purchases.
Recently, there has been significant price fluctuation in the market, and some suppliers recommend real-time inquiry to obtain the most accurate price information. Specification (mm) Wall thickness Unit price (yuan/ton) Inventory (ton) Delivery time Key physical properties Label Φ219×25 25 158,000 1,200 24h Grain size grade 8 | Creep strength 118MPa Φ325×32 32 162,000 850 48h W content 1.82% | Impact energy 72J Φ813×45 45 175,000 320 72h B content 0.0045% | Endurance life at 620℃ > 100,000h Φ159×16 16 152,000 2,100 12h Grain size grade 9 | Tensile strength 690MPa
Note: All data are sourced from the factory inspection report and are supported by third-party re-inspection.
The chemical composition of P92 steel has been precisely calculated, and the synergistic effect of various elements endows the material with excellent properties: chromium forms a dense oxide film, enhancing oxidation resistance; tungsten replaces part of molybdenum, significantly enhancing high-temperature strength; trace amounts of boron can refine grain boundaries and inhibit high-temperature creep.
Under the working condition of 610℃/28MPa, the design lifespan of P92 steel pipes reaches 200,000 hours, which represents a 2.3 percentage point improvement in efficiency compared to P91 material units. After adopting P92 steel pipes, a certain 660MW ultra-supercritical unit increased its annual power generation by 120 million kWh.
In the petrochemical industry, P92 steel pipes have been successfully applied to the delivery pipelines of hydrogenation reactors operating at 540℃ and a hydrogen partial pressure of 8MPa. They have been continuously operating for 5 years without experiencing hydrogen embrittlement, resulting in a 40% reduction in maintenance costs.
In terms of new breakthroughs in the nuclear power field, P92 steel tubes are used as heat transfer tubes in steam generators in the fourth-generation high-temperature gas-cooled reactors. Their radiation-induced embrittlement resistance is superior to that of traditional austenitic stainless steel, and the service life of a single tube is extended to 60 years.