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Alloy 20 is an austenitic stainless steel containing less than 50% iron developed for applications involving sulfuric acid. Its corrosion resistance also finds other uses in the chemical , petrochemical , power generation , and plastics industries.
Alloy 20 (Carpenter 20) is an austenitic stainless steel possessing excellent resistance to hot sulfuric acid and many other aggressive environments which would readily attack type 316 stainless. This alloy exhibits superior resistance to stress-corrosion cracking in boiling 20–40% sulfuric acid.
At room temperature, type 304 stainless steel is only resistant to 3% acid, while type 316 is resistant to 3% acid up to 50 °C (120 °F) and 20% acid at room temperature. Thus type 304 SS is rarely used in contact with sulfuric acid. Type 904L and Alloy 20 are resistant to sulfuric acid at even higher concentrations above room temperature.
Philippines National Structural Code of the Philippines 2010, ... 20 Zinc-coated or zinc-iron alloy-coated steel sheet A653 SS Gr. 33 33 45 1.36 20 Gr. 37 37 52
The group was formerly Anshan Iron & Steel Works and Showa Steel Works, which was established in 1916 under Japanese rule in Northeast China.Anshan Iron and Steel Company was established from the two places in 1948.
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A cleaning company has been fined $171,000 after federal investigators found 11 children working a "dangerous" overnight shift at a meat processing plant in Iowa.
'Pipe Metallurgical Co., OJSC') (MCX: TRMK) is a leading global manufacturer and supplier of steel pipes, tubular solutions and related services for the oil and gas industry, and specialty tubular products and pipeline systems for the nuclear, chemical, mechanical engineering and construction industries.