Common Materials Used for Valve Housings
Common materials used for valve housings
| Common housings materials for valves | Standards | Applicable temperature/℃ | Applicable pressure/MPa | Applicable media |
| Gray cast iron | -15 to 200 | Less than and equal to 1.6 | Water and gas | |
| Black heart malleable cast iron | -15 to 300 | Less than and equal to 2.5 | Water, seawater, coal gas and ammonia | |
| Ductile iron | -30 to 350 | Less than and equal to 4.0 | Water, sea water, coal gas, air and steam | |
| Carbon steel WCA, WCB and WCC | ASTM A216 | -29 to 425 | Less than and equal to 32.0 | Non-corrosive media including water, oil and gas |
| Low-temperature carbon steel LCB and LCC | ASTM A352 | -46 to 345 | Less than and equal to 32.0 | Used for low temperature |
| Alloy steel WC6, WC9, C5 and C12 | ASTM A217 | -29 to 595 -29 to 650 |
High pressure | Non-corrosive media and corrosive media |
| Austenitic stainless steel | ASTM A351 | -196 to 600 | Corrosive media | |
| Monel alloys | ASTM A494 | 400 | Media containing hydrofluoric acid | |
| Hastelloy alloys | ASTM A494 | 649 | Dilute sulfuric acid and other strong corrosive media | |
| Titanium alloys | Various strong corrosive media | |||
| Cast copper alloys | -273 to 200 | Oxygen and seawater | ||
| Plastics and ceramic | 60 | Less than and equal to 1.6 | Corrosive media |
| Grades | Materials | Standards | Applications | Temperature ranges |
| WCB | Carbon steel | ASTM A216 | Non-corrosive media, including water, oil and gas | -29℃ to +425℃ |
| LCB | Low-temperature Carbon Steel | ASTM A352 | Low temperatures | -46℃ to +345℃ |
| LC3 | 3.5% Nickel steel | ASTM A352 | Low temperatures | -101℃ to +340℃ |
| WC6 | 1.25% chromium and 0.5% molybdenum steel | ASTM A217 | Non-corrosive media, including water, oil and gas | -30℃ to +593℃ |
| WC9 | 2.25 Chromium | |||
| C5 | 5% Chromium and0.5% molybdenum | ASTM A217 | Mildly corrosive, corrosive and non-corrosive media | -30℃ to +649℃ |
| C12 | 9% Chromium and1% molybdenum | |||
| CA15(4) | 12% Chromium steel | ASTM A217 | Corrosive media | +704℃ |
| CA6NM(4) | 12% Chromium steel | ASTM A487 | Corrosive media | -30℃ to +482℃ |
| CF8M | Stainless steel 316 | ASTM A351 | Corrosive media, ultra-low temperature or high-temperature non-corrosive media | -268℃ to +649℃，425℃ above for a carbon content of 0.04% and above |
| CF8C | Stainless steel 347 | ASTM A351 | High temperature and non-corrosive media | -268℃ to +649℃ and 540℃ above for a carbon content of 0.04% and above |
| CF8 | Stainless steel 304 | ASTM A351 | Corrosive or ultra-low temperature or high temperature non-corrosive media | -268℃ to +649℃，425℃ above for a carbon content of 0.04% and above |
| CF3 | Stainless steel 304L | ASTM A351 | Corrosive or non-corrosive media | +425℃ |
| CF3M | Stainless steel 316L | ASTM A351 | Corrosive or non-corrosive media | +454℃ |
| CN7M | Alloy steel | ASTM A351 | Good resistance to hot sulfuric acid corrosion | +425℃ |
| M35-1 | Monel | ASTM A494 | It is weldable and has good resistance to all common organic acids and salt water corrosion as well as most alkaline solutions. | +400℃ |
| N7M | Hastelloy B | ASTM A494 | It is especially suitable for handling various hydrofluoric acid with different concentrations and temperatures and has good resistance to sulfuric acid and phosphoric acid. | +649℃ |
| CW6M | Hastelloy C | ASTM A494 | It has good corrosion resistance in strong oxidizing environments. Good properties at high temperature, high corrosion resistance to mic acid (formic acid), phosphoric acid, sulfurous acid and sulfuric acid | +649℃ |
| CY40 | Inconel | ASTM A494 | It has good performance in high temperature and good corrosion resistance for strong corrosive media. |
