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ASTM B637 is a standard specification for precipitation-hardening nickel alloy rods, forgings, and forging billets for high-temperature use, and the following is a detailed breakdown of the standard: 1. Overview of the standard Standard number: ASTM B637 Scope of application: This specification covers bars, forgings and billets for hot- and cold-worked precipitation-hardened nickel alloys for medium- or high-temperature service. Second, the main requirements Chemical composition: The ASTM B637 standard specifies a range of chemical compositions for a variety of nickel alloys that enhance their corrosion resistance and mechanical properties at high temperatures by adding specific alloying elements such as chromium, molybdenum, iron, niobium, etc. For example, NiCr20TiAl (W.Nr 2.4952) is one of the widely used Ni-Cr-based precipitation-hardened deformed superalloys with excellent creep and oxidation resistance. Mechanical Properties: This standard specifies the tensile strength, yield strength, elongation and other mechanical properties of the alloy at high temperatures to ensure that the product can withstand the effects of high temperature and stress in use. For example, N07718 superalloy has good comprehensive properties in the temperature range of -253~700C, especially the yield strength below 650C ranks first among deformed superalloys. Manufacturing Process: The ASTM B637 standard covers the manufacturing process requirements for alloy bars, forgings, and forging billets, including heat treatment, forging, machining, and other operations. These process requirements are designed to ensure that the organization, performance, and dimensional accuracy of the product comply with the standard regulations. Inspection & Testing: The standard specifies the inspection and testing methods of products, including chemical composition analysis, mechanical property testing, non-destructive testing, etc. These inspections and tests are designed to ensure that the quality of the product meets the standard requirements and that it can perform well in practical applications. Third, the field of application Precipitation-hardening nickel alloy bars, forgings and forging billets for high temperature under ASTM B637 are widely used in petroleum, chemical, aerospace, nuclear energy and other fields. These alloys play an important role in the manufacture of high-temperature equipment, engine components, and nuclear reactor structural parts due to their excellent high-temperature performance, corrosion resistance, and mechanical properties. IV. Conclusions ASTM B637 is an important standard specification for precipitation-hardening nickel alloy bars, forgings, and forging billets for high temperatures, which specifies in detail the requirements for the chemical composition, mechanical properties, manufacturing process, and inspection and testing of alloys. This standard is of great significance to ensure the quality and performance of superalloy materials and is widely used in various industrial fields..Huanickel?related?products?strictly?implement?this?standard.?For?more?information?about?the?standard?and?the?corresponding?product?information,[email protected] |