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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