United States · ASTM
A554 MT 309
ASTM A554:2013 — Standard Specification for Welded Stainless Steel Mechanical Tubing(2015a)
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.15 | |||
| Cr | 22 | 24 | ||
| Mn | 2 | |||
| Ni | 12 | 15 | ||
| P | 0.04 | |||
| S | 0.03 | |||
| Si | 1 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| steel tubes, annealed | ≥207 | ≥517 | ≥35 Elongation Lo = 50 mm; For longitudinal strip tests | HB ≤192 |