ASTM A213 Grade T24 Alloy Steel Seamless Tubes are Carbon Steel Tubes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome moly Tubes. ASTM Specification alloy steel Tubes are used for high temperature service applications. Seamless Alloy Steel Tubes according to ASTM A213 Grade T24 are reheated and furnished in full annlealed,isothermal annealed or normalised quenched and tempered condition. ASTM A213 Grade T24 Alloy Steel Seamless Tubes have a typical chemistry with additions of 2.20-2.60 Chromium and 0.90-1.10 Molybdenum. Bearing minimum tensile strength of 415 Mpa ASTM A213 Grade T24 Tubes have a minimum yield strength of 205 Mpa.
ASTM A213/ ASME SA213 T24 ALLOY STEEL TUBE SPECIFICATIONS
| Steel Grade | Pipe | Tube | Fittings | Plate | Forgings |
| 1/2Mo | A335 P1 | A213 T1 | A234 WP1 | A182 F1 | |
| 5Cr-1/2Mo | A335 P5 | A213 T5 | A234 WP5 | A387 GRADE 5 | A182 F5 |
| 9Cr-1Mo | A335 P9 | A213 T9 | A234 WP9 | A387 GRADE 9 | A182 F9 |
| 1 1/4 Cr-1/2Mo | A335 P11 | A213 T11 | A234 WP11 | A387 GRADE 11 | A182 F11 |
| 2 1/4Cr-1Mo | A335 P22 | A213 T22 | A234 WP22 | A387 GRADE 22 | A182 F22 |
| 9Cr-1Mo-V-Nb | A335 P91 | A213 T91 | A234 WP91 | A387 GRADE 91 | A182 F91 |
ASTM A213/ ASME SA213 T24 ALLOY STEEL TUBE CHEMICAL COMPOSITION
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
| 0.05-0.10 | 0.15-0.45 | 0.30-0.70 | 0.02 | 0.01 | 0.90-1.10 | – | 2.20-2.60 | – | – |
ASTM A213/ ASME SA213 T24 ALLOY STEEL TUBE MECHANICAL PROPERTIES
| Yield Strength | Tensile Strength | Elongation A5 min | |||
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 415 | – | 60 | 30 | ||
Alloy Steel Boiler and Heat Exchanger Tubes
| ASTM | ASME | JIS G 3462 | BS | DIN | ISO | ABS | NK | LRS | DNV |
| A209 T1 | SA209 T1 | STBA 12 | 3606 243 | 17175 15Mo3 |
2604 II TS26 | ABS K | KSTB 12 | Sec 4-E-TS380 |
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| A250 T1 | SA250 T1 | 3606 245 | 17177 15Mo3 |
2604 III TS26 | |||||
| A209 T1a | SA209 T1a | STBA 13 | ABS L | ||||||
| A250 T1a | SA250 T1a | ||||||||
| A213 T2 | SA213 T2 | STBA 20 | 17175 14MoV83 |
2604 II TS33 | Sec 4-E-TS440 |
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| A250 T2 | SA250 T2 | ||||||||
| A213 T12 | SA213 T12 | STBA 22 | 3606 620 | 17175 13CrMo44 |
2604 II TS32 | ABS O | KSTB 22 | Sec 6 1Cr 1/2Mo-440 |
Sec 4-E-TS410-3 |
| A250 T12 | SA250 T12 | 2604 III TS32 | |||||||
| A213 T11 | SA199 T11 | STBA 23 | 3606 621 | ABS N | KSTB 23 | Sec 4-E-TS410-4 |
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| SA213 T11 | |||||||||
| A213 T22 | SA199 T22 | STBA 24 | 3606 622 | 17175 10CrMo910 |
2604 II TS34 | ABS P | KSTB 24 | Sec 6 2-1/2Cr 1Mo-410 |
Sec 4-E-TS450-2 |
| SA213 T22 | |||||||||
| A213 T5 | SA199 T5 | STBA 25 | 3606 625 | 2604 II S37 | Sec 4-E-TS430 |
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| SA213 T5 | |||||||||
| A213 T9 | SA199 T9 | STBA 26 | 3059-P2 622-490 | 2604 II S38 | Sec 4-E-TS500 |
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| SA213 T9 | |||||||||
| A209 T1b | SA209 T1b | 3059-P2 243 | 17175 17Mn4 |
2604 II S39 | ABS M | Sec 6 2-1/2Cr 1Mo-490 |
Sec 4-E-TS450-1 |
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| 3059-P2 620-460 | (=A209- T1b) |
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| A250 T1b | SA250 T1b | 3059-P2 629-470 | 17175 14MoV63 |
2604 II S40 | Sec 4-E-TS460-2 |
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| A250 T11 | SA250 T11 | 3059-P2 629-590 | 17175 X20CrMoV12 1 |
Sec 4-E-TS590 |
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| A250 T22 | SA250 T22 | 3059-P2 762 | Sec 4-E-TS610 |
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| A213 T5b | SA213 T5b | 3059-P2 304S51 | Sec 4-E-TS690 |
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| A213 T5c | SA213 T5c | 3059-P2 306S51 | |||||||
| A213 T17 | SA213 T17 | 3059-P2 316S52 | |||||||
| A213 T21 | SA213 T21 | 3059-P2 316S51 | |||||||
| A213 T23 | SA213 T23 | 3059-P2 321S51 | |||||||
| A213 T91 | SA213 T91 | 3059-P2 347S51 | |||||||
| A213 T92 | SA213 T92 | 3059-P2 215S15 |
ASTM A213/ ASME SA213 T24 ALLOY STEEL TUBE USEFUL INFORMATION
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