High-strength transmission pipeline flanges are mainly used for high-pressure pipelines in the fields of marine, petroleum, natural gas, etc. Generally, they are exposed to toxic gases such as hydrogen sulfide (H2S) through gases, which places high mechanical performance requirements on the flanges. The ASTM A694 standard steel is still in its infancy in China.
ASTM A694 F60 is a high-strength steel primarily used to manufacture flanges, fittings, valves, and parts in high-pressure transmission equipment. This steel has high yield strength and tensile strength, allowing it to withstand the effects of high pressure and harsh environments. Additionally, ASTM A694 F60 has good corrosion and wear resistance, ensuring long-term stable performance.
Specifically, the chemical composition of ASTM A694 F60 requires a maximum carbon content of 0.26% and a maximum phosphorus content of 0.025%. This steel has high mechanical performance requirements, with a minimum yield strength of 60 (415) ksi, a minimum tensile strength of 75 (515) ksi, and a minimum elongation of 20%.
It should be noted that ASTM A694 F60 is a high-strength steel, which is difficult to manufacture and process. Professional equipment and processes are required to ensure product quality. At the same time, due to its good corrosion resistance and wear resistance, special care is needed during use to avoid contact with corrosive media.
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