ASTM A269 Seamless and Welded Austenitic Stainless Steel Tubing for General Service
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Standard: ASTM A269 Material: 304, 304L, 316, 316L, 321, 347 Size: OD (16-159mm) x WT (1.5-13mm) Inspection items: Chemical Composition, Size, Flaring test(seamless), Flanging test(welded), Bending test, Hydrostatic Test or Eddy current test or Ultrasonic test, Surface quality, Hardness Negotiated items: Intercrystalline corrosion, heat treatment, BKS tube, Air pressure test under water. Application: Boiler, heat Exchanger, condenser, etc. |
Chemical Composition：
Mechanical Properties:
Size Tolerance：
| Material | ASTM A269 Chemical Composition % Max | ||||||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | NB | Nb | Ti | |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … | … | …. | … |
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-12.0 | … | … | … | … |
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | … | … | … |
| TP316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-15.0 | 2.00-3.00 | … | … | … |
| TP321 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | … | … | … | 5C-0.70 |
| TP347 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | 10C-1.10 | … | ||
Mechanical Properties:
| Material | Heat treatment | Temperure F(C) Min. |
Hardness | |
| Brinell | Rockwell | |||
| TP304 | Solution | 1900 (1040) | 192HBW/200HV | 90HRB |
| TP304L | Solution | 1900 (1040) | 192HBW/200HV | 90HRB |
| TP316 | Solution | 1900(1040) | 192HBW/200HV | 90HRB |
| TP316L | Solution | 1900(1040) | 192HBW/200HV | 90HRB |
| TP321 | Solution | 1900(1040)F | 192HBW/200HV | 90HRB |
| TP347 | Solution | 1900(1040) | 192HBW/200HV | 90HRB |
Size Tolerance：
| OD, inch | OD Tolerance inch(mm) | WT Tolerance % | Length Tolernace inch(mm) | |
| + | - | |||
| ≤1/2 | ±0.005(0.13) | ±15 | 1/8(3.2) | 0 |
| >1/2~1 1/2 | ±0.005(0.13) | ±10 | 1/8(3.2) | 0 |
| >1 1/2~<3 1/2 | ±0.010(0.25) | ±10 | 3/16(4.8) | 0 |
| >3 1/2~<5 1/2 | ±0.015(0.38) | ±10 | 3/16(4.8) | 0 |
| >5 1/2~<8 | ±0.030(0.76) | ±10 | 3/16(4.8) | 0 |
| 8~<12 | ±0.040(1.01) | ±10 | 3/16(4.8) | 0 |
| 12~<14 | ±0.050(1.26) | ±10 | 3/16(4.8) | 0 |