ASTM A213 Heat Exchanger Tube Standard.pdf
What is ASTM A213 materials?
ASTM A213 specifications cover seamless ferritic and austenitic steel boiler, superheater, and heat exchanger tubes, with grades such as T5 and TP304. The specifications typically provide tube sizes and wall thicknesses ranging from 3.2 mm inside diameter to 127 mm outside diameter, with minimum wall thicknesses from 0.015 to 0.500 inches (0.4 to 12.7 mm), or, as specified in the order, an average wall thickness. Other diameters are available, provided that they meet all other requirements of this specification.
What is equivalent to SA213?
Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP310HCbN, TP316H, TP321H, TP347H, TP347HFG (fine grained) and TP348H are modifications of Grades TP304, TP309S, TP309Cb, TP310S, TP310Cb, TP316, TP321, TP347, and TP348, and are intended for high-temperature service, such as for superheaters and reheaters.
Chemical Composition Of ASTM A213 Stainless Steel Tubes
| Steel Grades | ASTM A213 Chemical Composition % Max | ||||||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | NB | Nb | Ti | |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.0-20.0 | 8.0-11.0 | … | … | … | … |
| TP304H | 0.04-0.10 | 2.00 | 0.040 | 0.030 | 0.75 | 18.0-20.0 | 8.0-11.0 | … | … | … | … |
| TP304L | 0.035 | 2.00 | 0.040 | 0.030 | 0.75 | 18.0-20.0 | 8.0-13.0 | … | … | … | … |
| TP310S | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 24.0-26.0 | 19.0-22.0 | 0.75 | … | … | … |
| TP310HCbN | 0.04-0.10 | 2.00 | 0.030 | 0.030 | 0.75 | 24.0-26.0 | 17.0-23.0 | … | 0.15-0.35 | 0.20-0.60 | … |
| TP316 | 0.08 | 2.00 | 0.040 | 0.030 | 0.75 | 16.0-18.0 | 11.0-14.0 | 2.00-3.00 | … | … | … |
| TP316L | 0.035 | 2.00 | 0.040 | 0.030 | 1.00 | 16.0-18.0 | 10.0-15.0 | 2.00-3.00 | … | … | … |
| TP316H | 0.04-0.10 | 2.00 | 0.040 | 0.030 | 0.75 | 16.0-18.0 | 11.0-14.0 | 2.00-3.00 | … | … | … |
| TP321 | 0.08 | 2.00 | 0.040 | 0.030 | 0.75 | 17.0-20.0 | 9.0-13.0 | … | … | … | 5C-0.60 |
| TP321H | 0.04-0.10 | 2.00 | 0.040 | 0.030 | 0.75 | 17.0-20.0 | 9.0-13.0 | … | … | … | 4C-0.60 |
| TP347 | 0.08 | 2.00 | 0.040 | 0.030 | 0.75 | 17.0-19.0 | 9.0-13.0 | … | … | 10xC-1.00 | … |
| TP347H | 0.04-0.10 | 2.00 | 0.040 | 0.030 | 0.75 | 17.0-20.0 | 9.0-13.0 | … | … | 8xC-1.00 | … |
Mechanical Properties Of ASTM A213 Stainless Steel Tubes
| Steel Grades | Heat Treatment | Temperure F (C) Min. | ASTM grain size NO. | Tensile Strength Ksi (MPa), Min. | Yield Strength Ksi (MPa), Min. | Elongation %, Min | Hardness | |
| Brinell | Rockwell | |||||||
| TP304 | Solution | 1900 (1040) | … | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP304L | Solution | 1900 (1040) | … | 70(485) | 25(170) | 35 | 192HBW/200HV | 90HRB |
| TP304H | Solution | 1900 (1040) | 7 | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP310S | Solution | 1900 (1040) | … | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP310HCbN | Solution | 2000 (1110) | 7 | 95(655) | 43(295) | 30 | 256HBW | 100HRB |
| TP316 | Solution | 1900 (1040) | … | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP316L | Solution | 1900 (1040) | … | 70(485) | 25(170) | 35 | 192HBW/200HV | 90HRB |
| TP316H | Solution | 1900 (1040) | 7 | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP321 | Solution | 1900 (1040) | 7 | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP321H | Solution | 2000(1100) | 7 | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP347 | Solution | 1900(1040) | … | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
| TP347H | Solution | 2000(1100) | 7 | 75(515) | 30(205) | 35 | 192HBW/200HV | 90HRB |
What is the thickness of the ASTM A213 wall?
[0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.
What is the tolerance of ASTM A213 tube?
For ASTM A213 Seamless Alloy Tubes, the standard tolerance is +20% and -12.5% of the nominal wall thickness. This means that the actual wall thickness can be up to 20% thicker or 12.5% thinner than the specified nominal thickness.
| OD, mm | OD Tolerance |
|---|---|
| < 25.4 | +/- 0.10 |
| 25.4 – <= 38.1 | +/- 0.15 |
| > 38.1 -< 50.8 | +/- 0.20 |
| 50.8 -< 63.5 | +/- 0.25 |
| 63.5 -< 76.2 | +/- 0.30 |
| 76.2 – <= 101.6 | +/- 0.38 |
| > 101.6 – <= 190.5 | +0.38/-0.64 |
| > 190.5 – <= 228.6 | +0.38/-1.14 |
What is the difference between ASTM A269 and ASTM A213?
ASTM A213: This standard covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. ASTM A269: This standard covers nominal-wall-thickness, seamless and welded austenitic steel tubing for general corrosion-resisting and low- or high-temperature service.
What Is The Difference Between ASTM A249 And ASTM A213?
The main difference is that ASTM A213 is for seamless ferritic and austenitic alloy steel tubes, while ASTM A249 is for welded austenitic steel tubes. Both standards cover tubes used in boilers, superheaters, and heat exchangers, but their manufacturing process (seamless vs. welded) and the specific steel types they apply to (A213 includes both ferritic and austenitic, A249 is specifically austenitic) are the key distinctions.
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