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ASTM A199 steel tubes,T5, T11, T12, T22, T91

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.

Grade C Si Mn P S Cr Mo V YSmin TSmin El (%)
                  KSI [MPa] KSI [MPa]  
T2 0.10-0.20 0.10-0.30 0.30-0.61 0.025 0.025 0.50-0.81 0.44-0.65 ... 30[205] 60[415] 30
T5 0.15max 0.50max 0.30-0.60 0.025 0.025 4.00-6.00 0.45-0.65 ... 30[205] 60[415] 30
T5b 0.15max 1.00-2.00 0.30-0.60 0.025 0.025 4.00-6.00 0.45-0.65 ... 30[205] 60[415] 30
T5c1 0.12max 0.50max 0.30-0.60 0.025 0.025 4.00-6.00 0.45-0.65 ... 30[205] 60[415] 30
T9 0.15max 0.25-1.00 0.30-0.60 0.025 0.025 8.00-10.00 0.90-1.10 ... 30[205] 60[415] 30
T11 0.05-0.15 0.50-1.00 0.30-0.60 0.025 0.025 1.00-1.50 0.44-0.65 ... 30[205] 60[415] 30
T12 0.05-0.15 0.50max 0.30-0.61 0.025 0.025 0.80-1.25 0.44-0.65 ... 32[220] 60[415] 30
T17 0.15-0.25 0.15-0.35 0.30-0.61 0.025 0.025 0.80-1.25 ... 0.15 30[205] 60[415] 30
T21 0.05-0.15 0.50max 0.30-0.60 0.025 0.025 2.65-3.35 0.80-1.06 ... 30[205] 60[415] 30
T22 0.05-0.15 0.50max 0.30-0.60 0.025 0.025 1.90-2.60 0.87-1.13 ... 30[205] 60[415] 30
T912 0.08-0.12 0.20-0.50 0.30-0.60 0.020 0.010 8.00-9.50 0.85-1.05 0.18-0.25 60[415] 85[585] 20
T923 0.07-0.13 0.50max 0.30-0.60 0.020 0.010 8.50-9.50 0.30-0.60 0.15-0.25 64[440] 90[620] 20
18Cr-2Mo4 0.025max 1.00max 0.30-0.60 0.040 0.030 17.5-19.5 1.75-2.50 ... 40[275] 60[415] 20
 
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