Mineral & Metal Services

Chemical composition and element analysis: 431 stainless steel is a high-quality stainless steel whose chemical composition has an important impact on its properties and applications: Carbon (C) : 0.11~0.17%, moderate carbon content helps to provide strength and corrosion resistance. Silicon (Si) : Silicon content ≤0.80%, used to improve corrosion resistance. Manganese (Mn) : Manganese content ≤0.80%, used to adjust the mechanical properties of the material. Phosphorus (P) : Phosphorus content ≤0.040%, control the content of impurities in the material. Sulfur (S) : sulfur content ≤0.030%, help to improve processing performance. Chromium (Cr) : The chromium content is between 16.00 and 18.00%, providing excellent corrosion resistance to stainless steel. Performance characteristics: Tensile strength: Has a wide range of tensile strength, from 880 MPa to 1350 MPa, depending on the specific processing and heat treatment conditions. Yield strength: It has a yield strength of 690 MPa to 1050 MPa, showing good mechanical properties. Elongation: with 12% elongation, showing a certain ductility. Section shrinkage: up to 39%, describing the properties of the material at fracture. Hardness: Annealing hardness is about 295 HBW. International corresponding brand: Chinese standard (GB-T) : digital grade S43120, new grade 17Cr16Ni2, old grade 1Cr17Ni2. American Standard (ASTM) : S43100, in accordance with ASTM standards. SAE Standards: No specific SAE standards are available. UNS standard: 431, used to identify materials. Japanese Standard (JIS) : meets sus431 in JIS standard. German standard (DIN) : 1.4057. European Standard (EN) : X17CrNi16-2. Application field: 431 stainless steel is suitable for the manufacture of parts requiring high strength, toughness, plasticity and corrosion resistance, especially bearing parts working in wet media. Due to its high strength and corrosion resistance, it is often used in applications that need to withstand high stresses and harsh environments, such as Marine equipment and chemical equipment. In addition, it can also replace 1Cr17Ni2 in some applications, providing better performance.

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