Relationship between common valve materials and temperature

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This post was last edited by Sammy_Wang on 2016-11-22 at 14:57. WCB carbon steel per ASTM A216, for non-corrosive applications including water, oil, and gas; temperature range: -30°C to +425°C. WC6: 1.25% chromium, 0.5% molybdenum; steel per ASTM A217, for non-corrosive applications including water, oil, and gas; temperature range: -30°C to +593°C. WC9: 2.25% chromium; per ASTM A217, for non-corrosive applications including water, oil, and gas; temperature range: -30°C to +593°C. C5: 5% chromium, 0.5% molybdenum; per ASTM A217, for mildly corrosive or erosive applications as well as non-corrosive applications; temperature range: -30°C to +649°C. C12: 9% chromium, 1% molybdenum; per ASTM A217, for mildly corrosive or erosive applications as well as non-corrosive applications; temperature range: -30°C to +649°C. CA6NM(4): 12% chromium steel; per ASTM A487, for corrosive applications; temperature range: -30°C to +482°C. CA15(4): 12% chromium; per ASTM A217, for corrosive applications up to +704°C. CF8: 304 stainless steel; per ASTM A351, for corrosive or ultra-low/ultra-high temperature non-corrosive applications; temperature range: -268°C to +649°C. For temperatures above +425°C, a carbon content of 0.04% or more must be specified. CF8M: 316 stainless steel; per ASTM A351, for corrosive or ultra-low/ultra-high temperature non-corrosive applications; temperature range: -268°C to +649°C; for temperatures above +425°C, a carbon content of 0.04% or more must be specified. CF8C: 347 stainless steel; per ASTM A351, mainly used for high-temperature, corrosive applications; temperature range: -268°C to +649°C; for temperatures above +540°C, a carbon content of 0.04% or more must be specified. CF3: 304L stainless steel; per ASTM A351, for corrosive or non-corrosive applications up to +425°C. CF3M: 316L stainless steel; per ASTM A351, for corrosive or non-corrosive applications up to +454°C. CN7M: alloy steel; per ASTM A351, with excellent resistance to hot sulfuric acid corrosion, up to +425°C. M35-1: Monel; per ASTM A494, in weldable grades. It exhibits excellent resistance to corrosion by all common organic acids and saline solutions. It also exhibits high resistance to corrosion by most alkaline solutions, even at temperatures up to +400°C. The N7M Hastelloy alloy per ASTM A494 is particularly suitable for use with hydrofluoric acid at various concentrations and temperatures in processors. It exhibits excellent resistance to sulfuric and phosphoric acid corrosion, and at temperatures up to +649°C, the CW6M Hastelloy per CASTM A494 shows good resistance to corrosion in highly oxidative environments. It exhibits excellent properties at high temperatures, showing high corrosion resistance to formic acid, phosphoric acid, sulfurous acid, and sulfuric acid; it performs well in high-temperature applications up to +649°C. The Inconel alloy CY40 ASTM A494 performs very well in such high-temperature applications. It exhibits excellent corrosion resistance in highly corrosive fluid media. LCB: Low-temperature carbon steel per ASTM A352; suitable for use at temperatures down to -46°C. Not suitable for use at temperatures above +340°C. LC3: 3.5% nickel steel per ASTM A352; suitable for low-temperature applications down to -101°C. Not suitable for use at temperatures above +340°C. Relationship between common valve materials and temperatures; selection of materials for valve bodies, bonnets, and discs; selection of materials for sealing surfaces and gaskets