Common Materials Used for Valve Housings

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.