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ASTM A213/A213M Seamless Ferritic And Austenitic Alloy-steel Boiler, Super Heater, And Heat-exchanger Tubes
- Nov 22, 2017 -

Grade T5c shall have a titanium content of not less than 4 times the carbon content and not more than 0.70%.
2 Grade T91 - other elements: Cb 0.06 - 0.10; N 0.030 - 0.070; Ni 0.40max; Al 0.04max. 
3 Grade T92 - other elements: W 1.50 - 2.00; Cb 0.04 - 0.09; B 0.001 - 0.006; N 0.03 - 0.07; Ni 0.40max; Al 0.04max. 
4 Grade 18Cr-2Mo shall have Ti + Cb = 0.20 + 4(C + N)min, 0.80max, other elements Nmax0.035; (Ni + Cu)max1.00.

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