The range of 16Mn pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.
16Mn is a kind of high strength low alloy structural steel, the carbon content of 0.12% -0.20% to join main alloying elements manganese, silicon, vanadium, niobium, and titanium.
16Mn seamless tubes for high pressure boiler 16Mn Steel is a carbon-manganese steel, carbon content of 0.16%, the yield point is equal to 343MPa (strength level belonging to 343MPa).
Less the 16Mn steel alloy content, good weldability, and generally do not have to warm-up before welding.
Mechnical property for Q345B low alloy structural steel:
The main chemical compositions(%) of 16Mn：
| Elements | Data |
|---|---|
| Carbon | 0.12-0.20 |
| Silicon | 0.20-0.60 |
| Manganese | 1.20-1.60 |
| Chromium | — |
| Molybdenum | — |
Mechanical Properties of 16Mn：
| Properties | Data |
|---|---|
| Tesile ób/Mpa | 470-660 |
| Yield ós/Mpa(min) | 275-345 |
| Elongation δ5(%)(min) | 21 |
| SAFA Aku/J(min) | - |
| Brinel hardness HBS(max) | - |
The W.T. tolerance of 16Mn：
| W.T.(S) | Tolerance of W.T. | |
|---|---|---|
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |
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