Valve Body Material and Applications

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Valve Body Casting Materials

ASTM A216 Grade WCB Carbon Steel Non-corrosive applications including water, oil and gases at temperatures between -20ºF (-30ºC) and +800ºF (+425ºC)
ASTM A352 Grade LCB  Low Temp Carbon Steel Low temperature applications to -50ºF (-46ºC). Not for use above +650ºF (+345ºC).
ASTM A352 Grade LCC Low Temp Carbon Steel Low temperature applications to -50ºF (-46ºC). Not for use above +650ºF (+345ºC).
ASTM A352 Grade LC1 Low Temp Carbon Steel Low temperature applications to -75ºF (-59ºC). Not for use above +650ºF (+340ºC).
ASTM A352 Grade LC2 Low Temp Carbon Steel Low temperature applications to -100ºF (-73ºC). Not for use above +650ºF (+340ºC).
ASTM A352 Grade LC3 3-1/2% Nickel Steel Low temperature applications to -150ºF (-101ºC). Not for use above +650ºF (+340ºC).
ASTM A217 Grade WC6 1-1/4% Chrome 1/2% Moly Steel Non-corrosive applications including water, oil and gases at temperatures between -20ºF (-30ºC) and +1100ºF (+593ºC).
ASTM A217 Grade C9 2-1/4% Chrome Non-corrosive applications including water, oil and gases at temperatures between -20ºF (-30ºC) and +1100ºF (+593ºC).
ASTM A217 Grade C5 5% Chrome 1/2% Moly Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -20ºF (-30ºC) and +1200ºF (+649ºC).
ASTM A217 Grade C12 9% Chrome 1% Moly Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -20ºF (-30ºC) and +1200ºF (+649ºC).
ASTM A487 Grade CA6NM 12% Chrome Steel Corrosive application at temperatures between -20ºF (-30ºC) and +900ºF (+482ºC).
ASTM A217 Grade CA15 13% Chrome Corrosive application at temperatures up to +1300ºF (+704ºC).
ASTM A351 Grade CF8M 316 SS Corrosive or either extremely low or high temperature non-corrosive services between -450ºF (-268ºC) and +1200ºF (+649ºC). Above +800ºF (+425ºC) specify carbon content of 0.04% or greater.
ASTM 351 Grade CF8C 347 SS Primarily for high temperature, corrosive applications between -450ºF (-268ºC) and +1200ºF (+649ºC). Above +1000ºF (+540ºC) specify carbon content of 0.04% or greater.
ASTM A351 Grade CF8 304 SS Corrosive or extremely high temperatures non-corrosive services between -450ºF (-268ºC) and +1200ºF (+649ºC). Above +800ºF (+425ºC) specify carbon content of 0.04% or greater.
ASTM A351 Grade CF3 304L SS Corrosive or non-corrosive services to +800ºF (+425ºC).
ASTM A351 Grade CF3M 316L SS Corrosive or non-corrosive services to +800ºF (+425ºC)
ASTM A351 Grade CN7M Alloy 20 Good resistance to hot sulfuric acid -51ºF (-46ºC) to +300ºF (+150ºC)
ASTM A990 Grade CN3MCu*. Alloy 20 (New*) Good resistance to hot sulfuric acid to -51ºF (-46ºC) to 300ºF~ 800ºF (150ºC~ 425ºC).
ASTM 743 Grade M3-35-1 Monel Weldable grade. Good resistance to corrosion by all common organic acids and salt water. Also highly resistant to most alkaline solutions to +750ºF (+400ºC).
ASTM A743 Grade N-12M Hastelloy B Is well suited for handling hydrofluoric acid at all concentrations and temperatures. Good resistance to sulphuric and phosphoric acids to +1200ºF (+649ºC).
ASTM A743 Grade CW-12M Hastelloy C Good resistance to strong oxidation conditions. Good properties at high temperatures. Good resistance to sulphuric and phosphoric acids to +1200ºF (+649ºC).
ASTM A743 Grade CY-40 Inconel Very good for high temperature service. Good resistance to strongly corrosive media and atmosphere to +800ºF (+425ºC).
ASTM B62 Bronze Water, oil or gas: up to 400ºF (205ºC). Excellent for brine and seawater service.

Common Forged Valve Materials 

ASTM Designation Description Common Service Recommendations Body/Bonnet Materia
A105(1) Carbon Steel General service such as oil, oil vapor, gas, steam and water at temperatures -20º to 1000ºF (-28ºC to 537ºC).
A350-LF2 CL1 Low Temperature Carbon Steel Suitable for temperatures -50ºF and not above 650ºF (-46ºC and not above 343ºC).
A182-F11 CL2 1-1/4 % Cr, 1/2% Mo Alloy Steel For high temperatures from -20º to 1100ºF to minimise graphitisation (-28ºC to 593ºC).
A182-F22 CL3 (2) 2-1/4 % Cr, 1% Mo Alloy Steel For services requiring greater strength than F11 at temperatures from -20º to 1100ºF (-28ºC to 593ºC).
A182-F5 5% Cr, 1/2% Mo Alloy Steel For corrosive/erosive refinery use requiring resistance at temperatures from -20º to 1100ºF (-28ºC to 593ºC).
A182-F9 9% Cr, 1% Mo Alloy Steel For services involving media with higher sulphur content to combat oxidation to 1100ºF (593ºC).
A182-F304 18% Cr, 8% Ni Stainless Steel For corrosive services and atmospheres from -450º to 1000ºF (-268º to 537ºC)
A182-F316 18% Cr, 8% Ni, 2% Mo Stainless Steel For superior resistance to corrosion from -450º to 1000ºF (-268º to 537ºC).

(1) Permissible but not recommended for prolonged use above 800ºF (425ºC)

(2) Consideration should be given to the possibility of excessive oxidation (scaling) when used above 1050ºF (563ºC)

 

Special Forged Material

Material Description Service Recommendations
HASTELLOY Nickel Alloy Good high temperature properties. Excellent corrosion resistance in hydrochloric acid.
INCONEL INCOLOY Nickel Alloy For high temperature service. Used for nuclear applications
MONEL Nickel-Copper Alloy For corrosive service up to 842ºF (450ºC). Resistant to sea water, acids, alkalies.
TITANIUM Transition Metal Good resistance to corrosion together with low specific weight.
ASTM A182 F20 Alloy 20 - Specialty Alloy For corrosive service such as hot sulphuric acid. Resists -49º to 600ºF (-45º to 316ºC)
ASTM A182 F51 Ferritic-Austenitic Stainless Steel Very high strength, resistance to corrosion, pitting and stress corrosion in chloride media
ASTM A182 F44 Austenitic Stainless Steel Very high strength, high resistance to corrosion.

 

Common Trim Materials

Trim Description Application
13% Cr, Type 410 Stainless Steel For oil and oil vapors and general services with heat treated seats and wedges
13% Cr, Type 410 plus Hardfacing Universal trim for general service requiring long service life up to 1100ºF (593ºC).*
Type 316 Stainless For liquids and gases which are corrosive to 410 Stainless Steel, up to 1000ºF (537ºC).
Monel For corrosive service to 842ºF (450ºC) such as acids, alkalies, salt solutions, etc
Alloy 20 For corrosive service such as hot acids -49º to 608ºF (-45º to 320ºC).
NACE Specially treated 316 or 410 trim combined optionally with B7M Bolts and 2HM nuts to meet NACE MR-01-75 requirements.
Full Stellite Full hard faced trim, suitable for abrasive & severe services up to 1200ºF (650ºC)

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