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ASTM B691 is a standard specification for rods, bars, and wire rods of iron-nickel-chromium-molybdenum alloys (UNS N08366 and UNS N08367). Here’s a closer look at the standard: 1. Overview of the standard Standard number: ASTM B691 Second, the main requirements The ASTM B691 standard mainly specifies the following aspects: Chemical composition: The content range of each element in the alloy is listed in detail to ensure that the chemical composition of the product meets the requirements of the standard. Mechanical properties: including tensile strength, yield strength, elongation and other mechanical property requirements to ensure the strength and toughness of the material during use. Dimensions and tolerances: specify the dimensions of the product and the allowable range of dimensional deviation to ensure the dimensional accuracy of the product. Heat treatment: The heat treatment process of the alloy is specified, including the heat treatment temperature, time and cooling method, etc., to improve the mechanical properties and corrosion resistance of the material. Inspection and testing: including chemical composition analysis, mechanical property testing, non-destructive testing, etc., to ensure that the quality of the product meets the standard requirements. Third, the field of application Due to their excellent corrosion resistance and high-temperature strength, iron-nickel-chromium-molybdenum alloys (UNS N08366 and UNS N08367) are widely used in the following fields: Chemical: used in the manufacture of chemical equipment and pipelines, which can resist the erosion of various corrosive media. Oil & Gas: In offshore oil platforms and natural gas extraction, it is used to make corrosion-resistant pipes and equipment. Energy: In the energy field such as thermal power plants and nuclear power plants, it is used to manufacture high-temperature equipment and components. Offshore engineering: In the marine environment, it is used to manufacture equipment and structural parts that are resistant to seawater corrosion. 4. Precautions When using ASTM B691 standard iron-nickel-chromium-molybdenum alloy products, the relevant standards and specifications should be strictly adhered to to ensure the quality and safety of the products. The selection of products should be carried out according to the specific use environment and requirements to ensure that the performance and life of the product meet the needs. During use, attention should be paid to the maintenance and care of the product to prolong the service life of the product. In summary, ASTM B691 is an important standard specification for rods, bars, and wires of iron-nickel-chromium-molybdenum alloys (UNS N08366 and UNS N08367), which provides detailed specifications for the chemical composition, mechanical properties, dimensions, and tolerances of the products to ensure that the quality and performance of the products meet the requirements of the standards.Huanickel?related?products?strictly?implement?this?standard.?For?more?information?about?the?standard?and?the?corresponding?product?information,[email protected] |