What material does the mark on the valve represent?

CF3, CF8, etc. are stainless steel; WCA, WCB, etc. are cast steel or carbon steel. ASTM standard. This post was last edited by andrew on 2008-1-23 16:53 ]

Valve model compilation method: Type code - transmission mode code - connection form code - structural form code - sealing surface material code - nominal pressure value code - valve body material code

WCB Carbon Steel ASTM A216 Non-Corrosive Applications Including Water, Oil & Gas Temperature Range: -30oC to +425oC LCB Low-temperature carbon steel ASTM A352 Low-temperature applications, temperatures as low as -46oC Cannot be used at temperatures above +340oC LC3 3.5% Nickel Steel ASTM A352 Low-temperature applications, temperatures as low as -101oC Cannot be used at temperatures above +340oC WC6 1.25% Chromium 0.5% Molybdenum Steel ASTM A217 Non-corrosive applications including water, oil and gas, temperature range: -30oC to +593oC WC9 2.25Cr ASTM A217 Non-corrosive applications including water, oil grade WC9 and gas, Temperature range: -30oC to +593oC C5 5% Chromium 0.5% Molybdenum ASTM A217 Mildly corrosive or aggressive applications and non-corrosive applications, temperature range: -30oC to +649oC C12 9% Chromium 1% Molybdenum ASTM A217 Mildly corrosive or aggressive applications and non-corrosive applications, temperature range: -30oC to +649oC CA6NM(4) 12% Chromium Steel ASTM A487 Corrosive Applications, Temperature Range: -30oC to +482oC CA15(4) 12% Chromium ASTM A217 Corrosive applications, temperature range up to +704oC CF8M 3 16 Stainless Steel ASTM A351 Corrosive or ultra-low or high temperature non-corrosive applications, temperature range: -268oC to +649oC, temperature above +425oC must specify carbon content 0.04% and above CF8C 347 stainless steel ASTM A351 mainly used for high temperature, corrosive applications, temperature range: -268oC to +649oC, temperature above +540oC must specify carbon content 0.04% and above CF8 304 stainless steel ASTM A351 Corrosive or ultra-low or high temperature non-corrosive applications, temperature range: -268oC to +649oC, above +425oC, specify carbon content 0.04% and above CF3 304L stainless steel ASTM A351 Corrosive or non-corrosive applications, temperature range up to +425oC CF3M 316L stainless steel ASTM A351 Corrosive or non-corrosive applications, temperature range up to +454oC CN7M Alloy steel ASTM A351 Has good resistance to hot sulfuric acid corrosion, temperature up to +425oC M35-1 Monel ASTM A494 weldable grade. Has good resistance to corrosion by all common organic acids and salt water. Also highly resistant to corrosion by most alkaline solutions up to +400oC N7M Hastelloy B ASTM A494 is particularly suitable for handling hydrofluoric acid at various concentrations and temperatures. It has good resistance to sulfuric acid and phosphoric acid corrosion, and the temperature is up to +649oC. CW6M Hastelloy C ASTM A494 has good resistance to corrosion in strong oxidizing environments. Very good properties at high temperatures and highly resistant to formic acid (formic acid), phosphoric acid, sulfurous acid and sulfuric acid, up to +649oC CY40 Inconel ASTM A494 performs well in high temperature applications. It has good corrosion resistance for highly corrosive fluid media.