ASTM SA213 T91 Alloy Steel Tube
Table of Content
- SA213 T91 Alloy Steel Tube
- ASTM A213 Grade T91 Alloy Steel Tube Specification
- Chemical Compositions of ASTM A213 / ASME SA213 T91 Alloy Steel Tube
- Mechanical Properties of ASTM A213 / ASME SA213 T91 Alloy Steel Tube
- SA213 T91 Alloy Steel Tube Weight Chart
- SA 213 T91 Alloy Steel Tube Wall thickness
- ASTM A213 T91 Alloy Steel Tube Diameter
- ASTM A213 T91 Alloy Steel Tube Application
- We Export To SA213 T91 Alloy Steel Tube
- FAQ
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SA213 T91 Alloy Steel Tube
Alloy Steel T91 Tubes are made from a martensitic and ferritic steel alloy, primarily composed of chromium-molybdenum steel, micro-alloyed with vanadium and niobium. This alloy adheres to strict nitrogen content controls as specified by industry standards. Known for its excellent high-temperature strength and creep resistance up to 600°C, Alloy Steel T91 also provides good oxidation and corrosion resistance due to its chromium content. These tubes are widely used in high-temperature applications across various industries. We are certified manufacturers, stockists, suppliers, and traders of ASME SA213 T91 and ASTM A231 T91 tubes. The alloy's superior performance, high resistance to thermal fatigue, excellent heat transfer, and low thermal expansion at high temperatures make it highly sought after in industries.
ASTM A213 Grade T91 Alloy Steel Tube Specification
| Size (Seamless) | 6.35mm o.d to 101.60mm o.d |
| Standards | ASTM A213, ASME SA213 |
| Equivalent Standards | EN 10216-2, ASTM A213, GOST 550-75, WN 1.4903 |
| Material | T91, K91560 |
| Equivalent Material | X10CrMoVNb9-1, 1.4903, P91, K91560 |
| Type | Seamless |
| Specialized in | Large Diameter Size |
| Outer Dimensions | 6-2500mm; WT:1-200mm |
| Wall Thickness | Schedule 3mm to 15mm. |
| Length | max 1~12m |
| Schedule | STD, SCH40, SCH80 |
| Form | Round, Square, Rectangular, Hydraulic Etc. |
| Length | Single Random, Double Random & Cut Length. |
| Tubing End | Plain End, Beveled End, Treaded. |
Chemical Compositions of ASTM A213 / ASME SA213 T91 Alloy Steel Tube
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % | V, % | N, % | Ni, % | Al, % | Nb, % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.08-0.12 | 0.3-0.6 | 0.02 max | 0.01 max | 0.2-0.5 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.03-0.07 | 0.4 max | 0.04 max | 0.06-0.10 |
Mechanical Properties of ASTM A213 / ASME SA213 T91 Alloy Steel Tube
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
|---|---|---|---|
| 585 min | 415 min | 20 min | 250 max |
SA213 T91 Alloy Steel Tube Weight Chart
| Nominal Pipe Size | Pipe Outer Diameter | Wall Thickness | Pipe Inner Diameter | Weight per Foot | Standard to XXHY | Schedule Pipe # |
Section Modulus | Gallon Capacity Per Linear Foot |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 0.84 | 0.109 | 0.622 | 0.85 | STD | 40 | .0407 | .0158 |
| 0.147 | 0.546 | 1.09 | XHY | 80 | .0478 | .0122 | ||
| 0.188 | 0.464 | 1.31 | 160 | .0528 | .0088 | |||
| 0.294 | 0.252 | 1.72 | XXHY | .0577 | .0026 | |||
| 3/4 | 1.05 | 0.113 | 0.824 | 1.13 | STD | 40 | .0705 | .0277 |
| 0.154 | 0.742 | 1.48 | XHY | 80 | .0853 | .0225 | ||
| 0.219 | 0.612 | 1.95 | 160 | .1006 | .0153 | |||
| 0.308 | 0.434 | 2.44 | XXHY | .1103 | .0077 | |||
| 1 | 1.315 | 0.133 | 1.049 | 1.68 | STD | 40 | .1328 | .0449 |
| 0.179 | 0.957 | 2.17 | XHY | 80 | .1606 | .0374 | ||
| 0.250 | 0.815 | 2.85 | 160 | .1904 | .0271 | |||
| 0.358 | 0.599 | 3.66 | XXHY | .2136 | .0146 | |||
| 1 1/4 | 1.66 | 0.140 | 1.380 | 2.27 | STD | 40 | .2346 | .0777 |
| 0.191 | 1.278 | 3.00 | XHY | 80 | .2913 | .0666 | ||
| 0.250 | 1.160 | 3.77 | 160 | .3421 | .0549 | |||
| 0.382 | 0.896 | 5.22 | .4110 | .0328 | ||||
| 1 1/2 | 1.90 | 0.145 | 1.610 | 2.72 | STD | 40 | .3262 | .1058 |
| 0.200 | 1.500 | 3.63 | XHY | 80 | .4118 | .0918 | ||
| 0.281 | 1.338 | 4.86 | 160 | .5079 | .0730 | |||
| 0.400 | 1.100 | 6.41 | .5977 | .0494 | ||||
| 2 | 2.375 | 0.109 | 2.157 | 2.64 | 10 | .4205 | .1898 | |
| 0.154 | 2.067 | 3.66 | STD | 40 | .5606 | .1743 | ||
| 0.218 | 1.939 | 5.03 | XHY | 80 | .7309 | .1534 | ||
| 0.250 | 1.875 | 5.68 | .8045 | .1434 | ||||
| 0.281 | 1.813 | 6.29 | .8666 | .1344 | ||||
| 0.344 | 1.687 | 7.47 | 160 | .9806 | .1161 | |||
| 0.436 | 1.503 | 9.04 | XXHY | 1.1043 | .0922 | |||
| 2 1/2 | 2.875 | 0.120 | 2.635 | 3.53 | 10 | .6870 | .2833 | |
| 0.203 | 2.469 | 5.80 | STD. | 40 | 1.0640 | .2487 | ||
| 0.216 | 2.443 | 6.14 | 1.1169 | .2435 | ||||
| 0.250 | 2.375 | 7.02 | 1.2468 | .2301 | ||||
| 0.276 | 2.323 | 7.67 | XHY | 80 | 1.3386 | .2202 | ||
| 0.375 | 2.125 | 10.02 | 160 | 1.6371 | .1842 | |||
| 0.552 | 1.771 | 13.71 | XXXHY | 1.9971 | .1280 | |||
| 3 | 3.50 | 0.120 | 3.260 | 4.34 | 1.0411 | .4336 | ||
| 0.156 | 3.188 | 5.58 | 1.3122 | .4147 | ||||
| 0.172 | 3.156 | 6.12 | 1.4265 | .4064 | ||||
| 0.188 | 3.124 | 6.66 | 1.5342 | .3984 | ||||
| 0.216 | 3.068 | 7.58 | STD. | 40 | 1.7241 | .3840 | ||
| 0.250 | 3.000 | 8.69 | 1.9372 | .3672 | ||||
| 0.281 | 2.938 | 9.67 | 2.1207 | .3521 | ||||
| 0.300 | 2.900 | 10.26 | XHY | 80 | 2.2253 | .3431 | ||
| 0.438 | 2.624 | 14.34 | 160 | 2.8774 | .2811 | |||
| 0.600 | 2.300 | 18.6 | XXHY | 3.4243 | .2158 | |||
| 3 1/2 | 4.0 | 0.120 | 3.760 | 4.98 | 10 | 1.3776 | .5768 | |
| 0.226 | 3.548 | 9.12 | STD. | 140 | 2.3939 | .5136 | ||
| 0.250 | 3.500 | 10.02 | 2.6001 | .4998 | ||||
| 0.281 | 3.438 | 11.17 | 2.8562 | .4821 | ||||
| 0.318 | 3.364 | 12.52 | XHY | 80 | 3.1400 | .4617 | ||
| 0.636 | 2..728 | 22.87 | XXHY | 4.8795 | .3085 | |||
| 4 | 4.5 | 0.120 | 4.260 | 5.62 | 10 | 1.7612 | .7404 | |
| 0.156 | 4.188 | 7.24 | 2.2354 | .7156 | ||||
| 0.188 | 4.124 | 8.67 | 2.6296 | .6942 | ||||
| 0.203 | 4.094 | 9.32 | 2.8173 | .6838 | ||||
| 0.219 | 4.062 | 10.02 | 3.0184 | .6725 | ||||
| 0.237 | 4.026 | 10.80 | STD. | 40 | 3.2145 | .6613 | ||
| 0.250 | 4.000 | 11.36 | 3.3611 | .6528 | ||||
| 0.281 | 3.938 | 12.67 | 60 | 3.7021 | .6326 | |||
| 0.312 | 3.876 | 13.97 | 4.0273 | .6126 | ||||
| 0.337 | 3.826 | 15.00 | XHY | 80 | 4.2713 | .5972 | ||
| 0.438 | 3.624 | 19.02 | 120 | 5.1790 | .5361 | |||
| 0.531 | 3.438 | 22.53 | 160 | 5.8997 | .4822 | |||
| 0.674 | 3.152 | 27.57 | XXHY | 6.7927 | .4054 | |||
| 5 | 5.563 | 0.188 | 5.187 | 10.80 | 4.1161 | 1.0979 | ||
| 0.219 | 5.125 | 12.51 | 4.7279 | 1.0716 | ||||
| 0.258 | 5.047 | 14.63 | STD. | 40 | 5.4500 | 1.0391 | ||
| 0.281 | 5.001 | 15.87 | 5.8644 | 1.0204 | ||||
| 0.312 | 4.939 | 17.51 | 6.4074 | .99647 | ||||
| 0.344 | 4.875 | 19.19 | 6.9358 | .9696 | ||||
| 0.375 | 4.813 | 20.80 | XHY | 80 | 7.4300 | .9449 | ||
| 0.500 | 4.563 | 27.06 | 120 | 9.2534 | .8495 | |||
| 0.625 | 4.313 | 32.99 | 160 | 10.7976 | .7590 | |||
| 0.750 | 4.063 | 38.59 | XXHY | 12.0954 | .6734 | |||
| 6 | 6.625 | 0.109 | 6.407 | 7.59 | 5 | 3.5769 | 1.6748 | |
| 0.134 | 6.357 | 9.30 | 10 | 4.3475 | 1.6488 | |||
| 0.156 | 6.313 | 10.79 | 5.0107 | 1.6260 | ||||
| 0.188 | 6.249 | 12.94 | 5.9351 | 1.5937 | ||||
| 0.203 | 6.219 | 13.94 | 6.3804 | 1.5780 | ||||
| 0.219 | 6.187 | 15.00 | 6.8261 | 1.5620 | ||||
| 0.250 | 6.125 | 17.04 | 7.6905 | 1.5306 | ||||
| 0.280 | 6.065 | 18.99 | STD. | 40 | 8.4958 | 1.5008 | ||
| 0.312 | 6.001 | 21.06 | 9.3416 | 1.4688 | ||||
| 0.344 | 5.937 | 23.10 | 10.111 | 1.4391 | ||||
| 0.375 | 5.875 | 25.05 | 10.893 | 1.4082 | ||||
| 0.432 | 5.761 | 28.60 | XHY | 80 | 12.224 | 1.3541 | ||
| 0.500 | 5.625 | 32.74 | 13.711 | 1.2909 | ||||
| 0.562 | 5.501 | 36.43 | 120 | 14.9806 | 1.2346 | |||
| 0.625 | 5.375 | 40.09 | 16.1821 | 1.1787 | ||||
| 0.719 | 5.187 | 45.39 | 160 | 17.8243 | 1.0977 | |||
| 0.864 | 4.897 | 53.21 | XXHY | 20.025 | .9784 | |||
| 1.000 | 4.625 | 60.13 | 21.7719 | .8727 | ||||
| 1.125 | 4.375 | 66.14 | 23.1237 | .7809 |
SA 213 T91 Alloy Steel Tube Wall thickness
| Hot rolled | Outside Diameter, mm | Tolerance, % |
| Outer Diameter≤101.6, Wall Thickness≤2.4 | +40/-0 | |
| Outer Diameter≤101.6, 2.4＜Wall Thickness≤3.8 | +35/-0 | |
| Outer Diameter≤101.6, 3.8＜Wall Thickness≤4.6 | +33/-0 | |
| Outer Diameter≤101.6, Wall Thickness>4.6 | +28/-0 | |
| Outer Diameter>101.6, 2.4＜Wall Thickness≤3.8 | +35/-0 | |
| Outer Diameter>101.6, 3.8＜Wall Thickness≤4.6 | +33/-0 | |
| Outer Diameter>101.6, Wall Thickness>4.6 | +28/-0 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, % |
| Outer Diameter≤38.1 | +20/-0 | |
| Outer Diameter>38.1 | +22/-0 |
ASTM A213 T91 Alloy Steel Tube Diameter
| Hot rolled | Outside Diameter, mm | Tolerance, mm |
| Outer Diameter≤101.6 | +0.4/-0.8 | |
| 101.6＜Outer Diameter≤190.5 | +0.4/-1.2 | |
| 190.5＜Outer Diameter≤228.6 | +0.4/-1.6 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, mm |
| Outer Diameter＜25.4 | ±0.10 | |
| 25.4≤Outer Diameter≤38.1 | ±0.15 | |
| 38.1＜Outer Diameter＜50.8 | ±0.20 | |
| 50.8≤Outer Diameter＜63.5 | ±0.25 | |
| 63.5≤Outer Diameter＜76.2 | ±0.30 | |
| 76.2≤Outer Diameter≤101.6 | ±0.38 | |
| 101.6＜Outer Diameter≤190.5 | +0.38/-0.64 | |
| 190.5＜Outer Diameter≤228.6 | +0.38/-1.14 |
ASTM A213 T91 Alloy Steel Tube Application
- Food Processing Industry
- Fabrication Industry
- Oil and Gas Industry
- Chemical Industry
- Plumbing
- General Purpose Applications
- Heating
- Water Supply Systems
- Power Plant
- Paper & Pulp Industry
We Export To SA213 T91 Alloy Steel Tube
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FAQ
T91 steel is a super strong steel alloy designed for intense heat. It resists warping and corrosion at high temperatures, making it ideal for boiler tubes and pipes handling hot fluids.
SA213 T91 is a specific type of T91 steel with a standardized composition and manufacturing process. It adheres to the ASTM A213 standard, ensuring consistent quality for boiler tubes.
SA213 isn't stainless steel itself, but a spec for boiler tubes. It covers both stainless (like 304) and regular steel. Look for additional codes like TP304 with SA213 to confirm stainless steel.