Introduction to Valves – Casting Materials

ASTM – Casting Materials

Common
Designation
ASTM
Casting
Specification
Service Recommendations
Carbon Steel ASTM A216
Grade WCB
Non-corrosive applications including water, oil and gases at temperatures between -20°F (-30°C) and +800°F (+425°C)
Low Temp
Carbon Steel
ASTM A352
Grade LCB
Low temperature applications to -50°F (-46°C). Not for use above +650°F (+340°C).
Low Temp
Carbon Steel
ASTM A352
Grade LC1
Low temperature applications to -75°F (-59°C). Not for use above +650°F (+340°C).
Low Temp
Carbon Steel
ASTM A352
Grade LC2
Low temperature applications to -100°F (-73°C). Not for use above +650°F (+340°C).
3.1/2% Nickel
Steel
ASTM A352
Grade LC3
Low temperature applications to -150°F (-101°C). Not for use above +650°F (+340°C).
1.1/4% Chrome
1/2% Moly Steel
ASTM A217
Grade WC6
Non-corrosive applications including water, oil and gases at temperatures between -20°F (-30°C) and +1100°F (+593°C).
2.1/4% Chrome ASTM A217
Grade C9
Non-corrosive applications including water, oil and gases at temperatures between -20°F (-30°C) and +1100°F (+593°C).
5% Chrome
1/2% Moly
ASTM A217
Grade C5
Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -20°F (-30°C) and +1200°F (+649°C).
9% Chrome
1% Moly
ASTM A217
Grade C12
Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -20°F (-30°C) and +1200°F (+649°C).
12% Chrome
Steel
ASTM A487
Grade CA6NM
Corrosive application at temperatures between -20°F (-30°C) and +900°F (+482°C).
12% Chrome ASTM A217
Grade CA15
Corrosive application at temperatures up to +1300°F (+704°C)
316SS ASTM A351
Grade CF8M
Corrosive or either extremely low or high temperature non-corrosive services between -450°F (-268°C) and +1200°F (+649°C). Above +800°F (+425°C) specify carbon content of 0.04% or greater.
347SS ASTM 351
Grade CF8C
Primarily for high temperature, corrosive applications between -450°F (-268°C) and +1200°F (+649°C). Above +1000°F (+540°C) specify carbon content of 0.04% or greater.
304SS ASTM A351
Grade CF8
Corrosive or extremely high temperatures non-corrosive services between -450°F (-268°C) and +1200°F (+649°C). Above +800°F (+425°C) specify carbon content of 0.04% or greater.
304L SS ASTM A351
Grade CF3
Corrosive or non-corrosive services to +800F (+425°C).
316L SS ASTM A351
Grade CF3M
Corrosive or non-corrosive services to +800F (+425°C).
Alloy-20 ASTM A351
Grade CN7M
Good resistance to hot sulfuric acid to +800F (+425°C).
Monel ASTM 743
Grade M3-35-1
Weldable grade. Good resistance to corrosion by all common organic acids and salt water. Also highly resistant to most alkaline solutions to +750°F (+400°C).
Hastelloy B ASTM A743
Grade N-12M
Is well suited for handling hydrofluoric acid at all concentrations and temperatures. Good resistance to sulphuric and phosphoric acids to +1200°F (+649°C).
Hastelloy C ASTM A743
Grade CW-12M
Good resistance to span oxidation conditions. Good properties at high temperatures. Good resistance to sulphuric and phosphoric acids to +1200°F (+649°C).
Inconel ASTM A743
Grade CY-40
Very good for high temperature service. Good resistance to spanly corrosive media and atmosphere to +800°F (+425°C).
Bronze ASTM B62 Water, oil or gas: up to 400°F. Excellent for brine and seawater service.
Common
Designation
ASTM
Casting
Specification
Service Recommendations