Trade Name  | Grade  | UNS #  | Heater Tubes  | 
|---|---|---|---|
1 1/4 Chrome  | T11  | K11597  | A213 / SA213  | 
2 1/4 Chrome  | T22  | K21590  | A213 / SA213  | 
5 Chrome  | T5  | K41545  | A213 / SA213  | 
9 Chrome  | T9  | K90941  | A213 / SA213  | 
T91  | T91  | K90901  | A213 / SA213  | 
T92  | T92  | K92460  | A213 / SA213  | 
Grade  | Chemical Composition%  | ||||||||
C  | Si  | Mn  | P, S Max  | Cr  | Mo  | Ni Max  | V  | Al Max  | |
T2  | 0.10~0.20  | 0.10~0.30  | 0.30~0.61  | 0.025  | 0.50~0.81  | 0.44~0.65  | –  | –  | –  | 
T11  | 0.05~0.15  | 0.50~1.00  | 0.30~0.60  | 0.025  | 1.00~1.50  | 0.44~0.65  | –  | –  | –  | 
T12  | 0.05~0.15  | Max 0.5  | 0.30~0.61  | 0.025  | 0.80~1.25  | 0.44~0.65  | –  | –  | –  | 
T22  | 0.05~0.15  | Max 0.5  | 0.30~0.60  | 0.025  | 1.90~2.60  | 0.87~1.13  | –  | –  | –  | 
T91  | 0.07~0.14  | 0.20~0.50  | 0.30~0.60  | 0.02  | 8.0~9.5  | 0.85~1.05  | 0.4  | 0.18~0.25  | 0.015  | 
T92  | 0.07~0.13  | Max 0.5  | 0.30~0.60  | 0.02  | 8.5~9.5  | 0.30~0.60  | 0.4  | 0.15~0.25  | 0.015  | 
Grade  | Chemical Composition%  | Mechanical Properties  | |||||||
W  | B  | Nb  | N  | T. S  | Y. P  | Elongation  | Hardness  | ||
T2  | –  | –  | –  | –  | ≥ 415MPa  | ≥ 205MPa  | ≥ 30%  | 163HBW(85HRB)  | |
T11  | –  | –  | –  | –  | ≥ 415MPa  | ≥ 205MPa  | ≥ 30%  | 163HBW(85HRB)  | |
T12  | –  | –  | –  | –  | ≥ 415MPa  | ≥ 220MPa  | ≥ 30%  | 163HBW(85HRB)  | |
T22  | –  | –  | –  | –  | ≥ 415MPa  | ≥ 205MPa  | ≥ 30%  | 163HBW(85HRB)  | |
T91  | –  | –  | 0.06~0.10  | 0.03~0.07  | ≥ 585MPa  | ≥ 415MPa  | ≥ 20%  | 250HBW(25HRB)  | |
T92  | 1.50~2.00  | 0.001~0.006  | 0.04~0.09  | 0.03~0.07  | ≥ 620MPa  | ≥ 440MPa  | ≥ 20%  | 250HBW(25HRB)  | |
Outside Diameter  | OD Tolerance  | WT Tolerance  | Ovality Tolerance  | Cut Length Tolerance  | 
OD≤ 12, 7 mm  | ± 0, 13 mm  | ± 15 %  | –  | + 3, 18 mm, – 0 mm  | 
12, 7 mm < OD ≤ 38, 1 mm  | ± 0, 13 mm  | ± 10 %  | max, 1, 65 mm  | + 3, 18 mm, – 0 mm  | 
38, 1 mm < OD ≤ 88, 9 mm  | ± 0, 25 mm  | ± 10 %  | max, 2, 41 mm  | + 4, 76 mm, – 0 mm  | 
| Place of Origin | Not Given | 
| Minimum Order Quantity | Not Given | 
| Supply Ability | Not Given | 
| Packaging Details | Not Given | 
| Delivery Details | Not Given | 




