ASTM A213 tubing (ASME SA213 tubing) is composed of Chrome Moly Alloy material and widely used in high-temperature applications, especially in boilers and superheaters. This type of pipe is typically priced significantly higher than standard carbon pipes.
Common grades include T9, T11, T12, T21, T22, T91, as well as stainless grades such as TP304/L or TP316/L.
| Chemical Composition Limits,%,for Low Alloy Steel | ||||||||||
| Grade | UNS Designation |
Composition,% | ||||||||
| Carbon | Manganese | Phosphorus 0.025 |
Sulfur | Silicon | Chromum 0.50-0.81 |
Molybdenum 0.44-0.65 |
Vanadium | other Elements | ||
| T2 | K11547 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.10-0.30 | … | … | |||
| T5 | K41545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 | … | … |
| T5b | K51545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.00-2.00 | 4.00-6.00 | 0.45-0.65 | … | … |
| T5c | K41245 | 0.12 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 | … | Ti 4xC-0.70 |
| T9 | K90941 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | … | … |
| T11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | … | … |
| T12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | 0.50 | 0.80-1.25 | 0.44-0.65 | … | … |
| T17 | K12047 | 0.15-0.25 | 0.30-0.61 | 0.025 | 0.025 | 0.15-0.35 | 0.80-1.25 | … | 0.15 | … |
| T21 | K31545 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 2.65-3.35 | 0.80-1.06 | … | … |
| T22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 1.90-2.60 | 0.87-1.13 | … | … |
| A. Maximum,unless range or minimum indicated.wWhere ellipses(...)apear in this table,there is no requirement,and analysis for the element need not be determined or reported. | ||||||||||
| B. It is permissible to order T2and T12with a suflur content of 0.045max. | ||||||||||
| Tensile and Hardness Requirements | ||||||
| Hardness | ||||||
| Grade | UNS Designation |
Tensile Strength,min, ksi[MPa] |
Yield Strength,min, ksi [MPa] |
Elongation in 2 in.or 50 mm, min,%,C |
Brinell/Vickers | Rockwell |
| T5b | K51545 | 60[415] | 30 [205] | 30 | 179 HBW/ 190 HV |
89 HRB |
| T9 | K90941 | 60[415] | 30 [205] | 30 | 179 HBW/ 190 HV |
89 HRB |
| T12 | K11562 | 60[415] | 32[220] | 30 | 163HBW/ 170 HV |
85 HRB |
| T23 | K140712 | 74[510] | 58[400] | 20 | 220 HBW/ 230 HV |
97 HRB |
| All other low alloy grades |
60[415] | 30 [205] | 30 | 163HBW/ 170 HV |
85 HRB | |
| Max,unless a range or a minimum is specified. | ||||||
Heat Treatment:
| UNS Number | Heat Treat Type | Cooling Media | Subcritical Annealing or Tempering Temperature,min or range °F[°℃] |
||
| K11547 | full or isothermal anneal; or normalize and temper; or subcritical anneal |
… | … 1200 to 1350[650 to 730] |
||
| K41545 | full orisothermal anneal; ornormalize and temper |
… | … 1250[675] |
||
| K51545 | full orisothermal anneal; or normalize and temper |
… 1250[675] |
|||
| K41245 | subcritical anneal | air or fumace | 1350 [730]⁴ | ||
| K90941 | full or isothermal anneal; ornormalize and temper |
… | … 1250[675] |
||
| K11597 | full or isothermal anneal; or normalize and temper |
… | … 1200[650] |
||
| K11562 | full or isothermal anneal; or normalize and temper; or subcritical anneal |
… | … 1200 to 1350[650 to 730] |
||
| K12047 | ful orisothermal anneal; ornormalize and temper |
… | 1200[650] | ||
| K31545 | ful or isothermal anneal; or normalize and temper |
1250 [675] | |||
| K21590 | ful orisothermal anneal; or normalize and temper |
… | 1250[675] | ||
A. Grades T9, T11, and T22 are subjected to heat treatment methods such as full or isothermal annealing, normalization, and tempering. When opting for the tempering process, the tempering temperature for T9 and T22 must be above 675℃, while T11 must be above 650℃.
B. Grades T91 and T92 are required to undergo normalization and tempering, with the normalizing temperature being above 1040℃ and the tempering temperature being above 730℃. These conditions apply during delivery.
Supply Range
Standard: ASTM A213/ASME SA213 for alloy and stainless steel tube and pipe
Grade: T9, T11, T22, T91, T92, TP304/L, TP316/L, TP317/L, TP321/H etc
OD: 1/8" to 16". 3.2mm to 406mm
WT: 0.015" to 0.500", 0.4mm to 12.7mm
Length: 10ft, 20ft, 40ft, or customized length
Manufacture Process Hot-finished seamless Cold-finished seamless
Packing & marking
Packed in bundles or ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.
Marking prescribed min including not limited: Standard, graded, size, heat no.
Contact sales manager : alisa@tjshenzhoutong.com
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