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ASTM 1/2 3000 Lbs 1.4259 Fittings Union

1.4529 German numeral code. Is a super duplex stainless steel, the main components: 20Cr-25Ni-6Mo-1Cu-0.2N corresponding to the United States: N08926, 254SMo…
1.4529 (UNS N08926) has very high resistance to pitting and crevice corrosion in halide media and in acidic environments containing sulfur and hydrogen
It can effectively resist chloride ion stress corrosion, and also has good corrosion resistance and good stability in oxidizing and reducing media.
The mechanical properties are slightly better than 904L, and it can be used in the manufacture of pressure vessels from -196 to 400 ¡ãC.

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309 stainless steel. 309S stainless steel-S30908 (American AISI, ASTM) 309S. The 309S stainless steel produced by steel mills is more resistant to corrosion and high temperature. Can withstand high temperature of 980¡ãC. Mainly used in boiler, chemical and other industries. Compared with 309S, 309 does not contain sulfur S content.

International Stainless Steel Marking Method The American Iron and Steel Institute uses three digits to mark various standard grades of forgeable stainless steel. Among them: ¢ÙAustenitic stainless steels are marked with 200 and 300 series numbers. For example, some of the more common austenitic stainless steels are marked with 302, 304, 316 and 310, ¢ÚFerritic and martensitic stainless steels are used The number of the 400 series is represented. ¢ÛFerritic stainless steel is marked with 430 and 446, martensitic stainless steel is marked with 410, 420 and 440C, duplex (austenite-ferrite), ¢ÜStainless steel, precipitation hardening stainless steel and low iron content Less than 50% of the high alloys are usually patented or branded

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