FORGED VALVES MATERIALS

Forged valves are those valves whose bodies are manufactured out of forged steel. The most common forged materials for valves are:

ASTM MATERIAL MATERIAL GROUP RECOMMENDED SERVICE CASTING MATCHING GRADE
A105(1) Carbon Steel General service such as oil, oil vapor, gas, steam and water at temperatures -20°F to 1000°F (-28°C to 537°C). A216-WCB
A350-LF2 CL1 Low Temperature Carbon Steel Suitable for temperatures -50°F and not above 650°F (-46°C and not above 343°C). A352-LCB
A182-F11 CL2 1 1/4% Cr, 1/2% Mo Alloy Steel High temperatures from -20°F to 1100°F to minimize graphitization (-28°C to 593§C). A217-WC6
A182-F22 CL3 (2) 2 1/4% Cr, 1% Mo Alloy Steel For services requiring greater strength than F11 at temperatures from -20°F to 1100°F (-28°C to 593°C). A217-WC9
A182-F5 5% Cr, 1/2% Mo Alloy Steel For corrosive/erosive refinery use requiring resistance at temperatures from -20°F to 1100§F (-28°C to 590°C). A217-C5
A182-F9 9% Cr, 1% Mo Alloy Steel For services involving media with higher Sulphur content to combat oxidation to 1100oF (593°C). A217-C12
A182-F304 18% Cr, 8% Ni Stainless Steel For corrosive services and atmospheres from -450°F to 1000°F (-268°C to 537°C). A351-CF8
A182-F316 18% Cr, 8% Ni, 2% Mo Stainless Steel For superior resistance to corrosion from -450°F to 1000°F (-268°C to 537°C). A351-CF8M
  1. Allowed but not recommended for long term use above 800oF (425oC)
  2. Warning to the possibility of excessive oxidation (scaling) when used above 1050oF (563oC)

 

ASTM A105 VALVE

ASTM A105 are widely used carbon steel (forged) valves:

Composition, %
Element C Mn P S Si Cu Ni Cr Mo V
0.35 max 0.60-1.05 0.035 max 0.040
max
0.10-0.35 0.40
max (1)
0.40
max (1)
0.30
max (1-2)
0.12
max (1-2)
0.08
max

Notes:

  1. The total of Cu, Ni, Niobium, Moly and Vanadium shall not exceed 1.00%.
  2. The sum of Niobium and Molybdenum shall not exceed 0.32%.

 

ASTM A182 VALVE

ASTM A182 is a commonly used forged grade for stainless steel valves:

Composition, %
ASTM A182
GRADE
C Mn P S Si Ni Cr Mo Nb Ti Others
F304(1) 0.08 2.0 0.045 0.030 1.0 8.0-11.0 18.0-20.0        
F304H 0.04-0.10 2.0 0.045 0.030 1.0 8.0-11.0 18.0-20.0        
F304L(1) 0.030 2.0 0.045 0.030 1.0 8.0-13.0 18.0-20.0        
F304N(2) 0.08 2.0 0.045 0.030 1.0 8.0-10.5 18.0-20.0        
F304LN(2) 0.030 2.0 0.045 0.030 1.0 8.0-10.5 18.0-20.0        
F309H 0.04-0.10 2.0 0.045 0.030 1.0 12.0-15.0 22.0-24.0        
F310 0.25 2.0 0.045 0.030 1.0 19.0-22.0 24.0-26.0        
F310H 0.04-0.10 2.0 0.045 0.030 1.0 19.0-22.0 24.0-26.0        
F310MoLN 0.030 2.0 0.030 0.015 0.40 21.0-23.0 24.0-26.0 2.0-3.0     N 0.10-0.16
F316 0.08 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0      
F316H 0.04-0.10 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0      
F316L(1) 0.030 2.0 0.045 0.030 1.0 10.0-15.0 16.0-18.0 2.0-3.0      
F316N(2) 0.08 2.0 0.045 0.030 1.0 11.0-14.0 16.0-18.0 2.0-3.0      
F316LN(2) 0.030 2.0 0.045 0.030 1.0 11.0-14.0 16.0-18.0 2.0-3.0      
F316Ti 0.08 2.0 0.045 0.030 1.0 10.0-14.0 16.0-18.0 2.0-3.0   (3) N 0.10 max
F317 0.08 2.0 0.045 0.030 1.0 11.0-15.0 18.0-20.0 3.0-4.0      
F317L 0.030 2.0 0.045 0.030 1.0 11.0-15.0 18.0-20.0 3.0-4.0      
F321 0.08 2.0 0.045 0.030 1.0 9.0-12.0 17.0-19.0     (4)  
F321H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-12.0 17.0-19.0     (5)  
F347 0.08 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (6)    
F347H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (7)    
F348 0.08 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (6)   Co 0.20
Ta 0.10
F348H 0.04-0.10 2.0 0.045 0.030 1.0 9.0-13.0 17.0-20.0   (7)   Co 0.20
Ta 0.10

Notes:

  1. Grades F304, F304L, F316, and F316L shall have a maximum Nitrogen of 0.10%.
  2. Grades F304N, F316N, F304LN, and F316LN shall have a Nitrogen of 0.10 to 0.16%.
  3. Grade F316Ti shall have a Titanium content five times above the Carbon plus Nitrogen and not more than 0.70%.
  4. Grade F321 shall have a Titanium content five times above the Carbon and not more than 0.70%.
  5. Grade F321H shall have a Titanium content four times above the Carbon and not more than 0.70%.
  6. Grades F347 and F348 shall have a Niobium content ten times above the Carbon and not more than 1.10%.
  7. Grades F347H and F348H shall have a Niobium content above than eight times the Carbon and not more than 1.10%.

 

 

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