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The molybdenum alloy steel (C-0.5Mo) pressure vessel plates made in accordance with ASTM A204/ ASME SA-204 can be furnished in three grades: Grade A (UNS K11820), Grade B (UNS K12020), Grade C (K12320), with same P number of 3. All three grades of ASTM A204 can be applied to ASME Boiler & Pressure Vessel Code Section I, III, VIII-1, and XII, with maximum temperature limits of 538°C, 371°C, 538°C, 343°C, respectively.
Temp. | S |
---|---|
40 | 128 |
65 | 128 |
100 | 128 |
125 | 128 |
150 | 128 |
200 | 128 |
250 | 128 |
300 | 128 |
325 | 128 |
350 | 128 |
375 | 128 |
400 | 128 |
425 | 127 |
450 | 124 |
475 | 105 |
500 | 68.9 |
525 | 42.8 |
550 | 23.2 |
Temp. | S |
---|---|
40 | 138 |
65 | 138 |
100 | 138 |
125 | 138 |
150 | 138 |
200 | 138 |
250 | 138 |
300 | 138 |
325 | 138 |
350 | 138 |
375 | 138 |
400 | 138 |
425 | 137 |
450 | 134 |
475 | 107 |
500 | 68.1 |
525 | 43.1 |
550 | 23.1 |
Temp. | S |
---|---|
40 | 148 |
65 | 148 |
100 | 148 |
125 | 148 |
150 | 148 |
200 | 148 |
250 | 148 |
300 | 148 |
325 | 148 |
350 | 148 |
375 | 148 |
400 | 148 |
425 | 148 |
450 | 144 |
475 | 109 |
500 | 67.2 |
525 | 43.3 |
550 | 23.0 |