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SS422 | X20CrMoV11-1 | 1.4935
Key Features
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Superior High-Temperature Performance
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Heat Treatable Martensitic Grade
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Enhanced Creep & Stress Rupture Resistance
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High Strength & Hardness
Size Range
Round Bar
80 mm To 460 mm Diameter
Flat Bar
80mm*80mm To 510mm*260mm
About the Steel
SS422 stainless steel is a martensitic stainless grade designed for high strength, hardness, and moderate corrosion resistance, especially in elevated temperature environments. Its composition, including added molybdenum and vanadium, improves creep resistance, wear performance, and mechanical stability at high temperatures. SS422 responds well to heat treatment, allowing it to achieve a combination of high tensile strength and hardness. However, like other martensitic stainless steels, its corrosion resistance is lower than austenitic grades, and toughness decreases as hardness increases. It is commonly used in turbine blades, aerospace components, and high-stress industrial parts.
Applications
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Turbine Blades & Rotors
Used in steam and gas turbines for high-temperature performance.
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Pump & Valve Parts
Ideal for shafts, spindles, and seats exposed to water and mild chemicals.
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Aircraft Engine Components
Suitable for parts exposed to stress and heat.
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Power Plant Components
Used in steam power systems for creep and stress rupture resistance.
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Industrial Tooling & Shafts
Suitable for high-load, high-temperature mechanical parts.
Manufacturing
Process flow for manufacturing 422 steel
Melting
Ingots melted in EIF, impurities fully killed and followed LRF and VD process at Client's request. Ingots annealed
Forging
Press or Hammer Forged with reduction ratio of 3.5 to 4.5 times
Heat Treatment
Full annealing cycle post forging or any special QT process as per Client's TDC
Quality Test
Ultrasonic, Hardness, Mechanical, Microstructure testing of the metal at a NABL approved lab
Proof Machining
Proof machining of Forged Rounds and Flats as per Client's requirements
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