Standard Specifications for Valve Material-Part 1
Nov 16, 2015
1. Cast Carbon Steel ASTM A216 Grade WCC
Temp. range = −20 to 800°F (−29 to 427°C)
Composition (Percent)
C | Mn | P | S | Si |
0.25 | 1.2 | 0.04 | 0.045 | 0.6 |
2. Cast Carbon Steel ASTM A352 Grade LCC
Temp. range = −50 to 650°F (−46 to 343°C)
Composition − Same as ASTM A216 grade WCC
3. Carbon Steel Bar AISI 1018, UNS G10180
Temp. range = −20 to 800°F (−29 to 427°C)
Composition (Percent)
C | Mn | P | S |
0.15 to 0.2 | 0.6 to 0.9 | 0.04 max | 0.05 max |
4. Leaded Steel Bar AISI 12L14, UNS G12144
Temp. range = −20 to 800°F (−29 to 427°C)
Composition (Percent)
C | Mn | P | S | Pb |
0.15 max | 0.85 to 1.15 | 0.04 to 0.09 | 0.26 to 0.35 | 0.15 to 0.35 |
5. AISI 4140 Cr-Mo Steel (Similar to ASTM A193 Grade B7 bolt material)
Temp. range = −55°F to 1000°F (−48 to 538°C).
Composition (Percent)
C | Mn | P | S | Si | Cr | Mo | Fe |
0.38 to 0.43 | 0.75 to 1.0 | 0.035 max | 0.035 max | 0.15 to 0.35 | 0.8 to 1.1 | 0.15 to 0.25 | Remainder |
6. Forged 3-1/2% Nickel Steel ASTM A352 Grade LC3
Temp. range = −150 to 650°F (−101 to 343°C)
Composition (Percent)
C | Mn | P | S | Si | Ni |
0.15 max | 0.5 to 0.8 | 0.04 max | 0.045 max | 0.6 max | 3.0 to 4.0 |
7. Cast Cr-Mo Steel ASTM A217 Grade WC6
Temp. range = −20 to 1100°F (−29 to 593°C)
Composition (Percent)
C | Mn | P | S | Si | Cr | Mo |
0.05 to 0.2 | 0.5 to 0.8 | 0.04 max | 0.045 max | 0.60 max | 1.0 to 1.5 | 0.45 to 0.65 |
8. Cast Cr-Mo Steel ASTM A217 Grade WC9
Temp. range = −20 to 1100°F (−29 to 593°C)
Composition (Percent)
C | Mn | P | S | Si | Cr | Mo |
0.05 to 0.18 | 0.4 to 0.7 | 0.04 max | 0.045 max | 0.60 max | 2.0 to 2.75 | 0.9 to 1.2 |
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