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| Feedwater Heater Tubes |
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| Standard |
| ASME SA556 |
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| Chemical Compostion |
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| Grade |
C % |
Si % |
Mn % |
P % |
S % |
| B2 |
0.27 max |
0.10 min |
0.29-0.93 |
0.030 max |
0.030 max |
| C2 |
0.30 max |
0.10 min |
0.29-1.06 |
0.030 max |
0.030 max |
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| Mechanical Properties |
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| Grade |
Tensile Strength MPA |
Yield Strength MPA |
Hardness HRB |
| B2 |
410 min |
260 min |
79 min |
| C2 |
480 min |
280 min |
89 min |
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