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ASTM B690 is a standard specification for seamless metric tubes and tubes 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 No.: ASTM B690-2002(2013) Scope of application: This standard applies to seamless pipes and tubes of iron-nickel-chromium-molybdenum alloys (UNS N08366 and UNS N08367), which are typically used where high corrosion resistance and high temperature strength are required. Second, the main requirements The ASTM B690 standard mainly specifies the following: 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. Manufacturing requirements: The manufacturing process of seamless pipes is specified, including hot processing, cold processing, heat treatment and other processes to ensure the quality and performance of the product. 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 Fenic-chromium-molybdenum alloys (UNS N08366 and UNS N08367) seamless pipes and tubes are widely used in the following fields due to their excellent corrosion resistance and high temperature strength: Chemical: used to manufacture chemical equipment and pipelines with strong corrosion resistance. Oil & Gas: In oil and gas extraction, transportation, and processing, it is used to manufacture high-pressure, corrosion-resistant pipes and equipment. Energy: In the energy fields such as nuclear energy and thermal power generation, it is used to manufacture pipelines and equipment in high-temperature and high-pressure environments. Others: It can also be used in fields such as marine engineering, aerospace, and other industrial applications that require high corrosion resistance and high-temperature strength. 4. Precautions When selecting and using ASTM B690 iron-nickel-chromium-molybdenum alloy seamless pipes and tubes, the chemical composition, mechanical properties, dimensions, and tolerances of the product should be carefully checked to ensure that they meet the actual needs. The selection and use of products should comply with relevant standards and norms to ensure the quality and safety of products. 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 B690 is an important standard specification for seamless pipes and tubes 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 product to ensure that the quality and performance of the product meet the standard requirements.Huanickel?related?products?strictly?implement?this?standard.?For?more?information?about?the?standard?and?the?corresponding?product?information,[email protected] |