ASTM A519 seamless steel mechanical tubing
ASTM A519 specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.
Chemical Component of ASTM A519
| Grade | C | Mn | P | S | Si | Cr | Mo |
| 4118 | 0.18-0.23 | 0.70-0.90 | 0.035 | 0.040 | 0.15-0.35 | 0.40-0.60 | 0.08-0.15 |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4135 | 0.33-0.38 | 0.70-0.90 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.40-0.45 | 0.75-1.0 | 0.035 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
Mechanical Properties of ASTM A519
| Grade | Tenslle strength(Mpa) | Yield strength(Mpa) | Elongation(%) | RB |
| 4118 | 685 | 885 | 12 | 197 |
| 4130 | 785 | 930 | 12 | 229 |
| 4135 | 835 | 980 | 12 | 229 |
| 4140 | 930 | 1080 | 12 | 217 |
Dimension Tolerances of ASTM A519
| Pipe Type | Pipe Sizes | Tolerances | |
| Cold Drawn | OD | ≤48.3mm | ±0.40mm |
| WT | ≥60.3mm | ±1%mm | |
Click here to learn more about ASTM A519 4130, 4140, 4142 specifications and properties.
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