| Shell Materials & Steel Valves |
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| The body, bonnet and cover of steel valves are manufactured from the following alternatives depending on the application. |
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| Chemical Composition - all figures in Percent [%] |
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| Steel |
A216
WCB |
A350
LF2 |
A351
CF8M |
A352
LCC |
| Element |
Carbon |
max. 0.25 |
max 0.25 |
max. 0.08 |
max 0.25 |
Manganese |
max. 1.00 |
0.60 - 1.35 |
max. 1.50 |
max 1.20 |
Phoshorus |
max. 0.04 |
max 0.035 |
max. 0.04 |
max. 0.04 |
Sulfur |
max. 0.045 |
max 0.040 |
max. 0.04 |
max 0.045 |
Silicon |
max. 0.60 |
0.15 - 0.30 |
max. 1.50 |
max 0.60 |
Nickel |
max. 0.50 |
max. 0.40 |
9.0 - 12.0 |
max 0.50 |
Chromium |
max. 0.50 |
max. 0.30 |
18.0 - 21.0 |
max 0.50 |
Molybdenum |
max. 0.20 |
max. 0.12 |
2.0 - 3.0 |
max 0.20 |
Copper |
max. 0.30 |
max. 0.40 |
- - - |
- - - |
Columbium |
- - - |
max. 0.02 |
- - - |
- - - |
Vandium |
max. 0.03 |
max. 0.03 |
- - - |
max 0.30 |
Nitrogen |
- - - |
- - - |
- - - |
- - - |
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| Mechanical Properties |
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| Steel |
Tensile strength Rm
N/mm2 (min.) |
Yield strength Rp0.2
N/mm2 (min.) |
Elongation A
% (min.) |
| A216 WCB |
485 - 655 |
250 |
13 |
| A350 LF2 |
485 - 655 |
250 |
22 |
| A351 CF8M |
485 |
205 |
30 |
| A352 LCC |
485 - 655 |
275 |
22 |
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