| ASTM Grades A213/A213M |
| Ferritic SteelA Composition, % |
| Grade |
C |
Mn |
P
Max |
S
Max |
Si |
Cr |
Mo |
Ti |
V |
Nb |
N |
Ni |
Al |
| T2c |
.10/.20 |
.30/.61 |
.025 |
.025 |
.10/.30 |
.50/.81 |
.44/.65 |
— |
— |
— |
— |
— |
— |
| T5 |
.15 max |
.30/.60 |
.025 |
.025 |
.50 max |
4.00/6.00 |
.45/.65 |
— |
— |
— |
— |
— |
— |
| T5b |
.15 max |
.30/.60 |
.025 |
.025 |
1.00/2.00 |
4.00/6.00 |
.45/.65 |
— |
— |
— |
— |
— |
— |
| T5c |
.12 max |
.30/.60 |
.025 |
.025 |
.50 max |
4.00/6.00 |
.45/.65 |
A |
— |
— |
— |
— |
— |
| T9 |
.15 max |
.30/.60 |
.025 |
.025 |
.25/1.00 |
8.00/1.00 |
.90/1.10 |
— |
— |
— |
— |
— |
— |
| T11 |
.05 min/15 max |
.30/.60 |
.025 |
.025 |
.50/1.00 |
1.00/1.50 |
.44/.65 |
— |
— |
— |
— |
— |
— |
| T12c |
.05 min/15 max |
.30/.61 |
.025 |
.025 |
.50 max |
.80/1.25 |
.44/.65 |
— |
— |
— |
— |
— |
— |
| T17 |
.15/.25 |
.30/.61 |
.025 |
.025 |
.15/.35 |
.80/1.25 |
— |
— |
.15 |
— |
— |
— |
— |
| T21 |
.05 min/15 max |
.30/.60 |
.025 |
.025 |
.50 max |
2.65/3.35 |
.80/1.06 |
— |
— |
— |
— |
— |
— |
| T22 |
.05 min/15 max |
.30/.60 |
.025 |
.025 |
.50 max |
1.90/2.60 |
.87/1.13 |
— |
— |
— |
— |
— |
— |
| T91 |
.08/.12 |
.30/.60 |
.020 |
.010 |
.20/.50 |
8.00/9.50 |
.85/1.05 |
— |
.18/.25 |
.06/.10 |
.030/.070 |
.40 max |
.04 max |
| 13Cr |
.15/.22 |
.25/1.00 |
.020 |
.010 |
1.00 max |
12.00/14.00 |
— |
— |
— |
— |
— |
— |
— |
A Grade T5c shall have a titanium content of not less than four times the carbon content and not more than 0.70%.
b Grade 18Cr-2Mo shall have Ti + Nb = 0.20 + 4 (C + N) min., 0.80 max.
c It is permissible to order T2 and T12 with 0.045 max. Sulfur.
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