What is 15m03 material?
The boiler 15Mo3 alloy pipe is a thick-walled round tube made of 15Mo3 material, primarily used in low and medium-pressure boiler heating surfaces with working pressure not exceeding 5.88 MPa and temperatures below 450°C, as well as in economizers and superheaters of high-pressure boilers. Its tensile strength ranges from 450 to 600 MPa, with a yield strength of ≥270 MPa.
The pipe undergoes oil quenching and hardening, with a quenching temperature range of 800 to 850°C and tempering temperatures controlled between 150°C and 200°C, achieving a hardness of above HRC60 after treatment. The product is available in a wide range of specifications, and when the thickness does not exceed 8 mm, it can be applied in industrial fields such as punching dies and stamping dies.
15mo3 material equivalent
DIN 17155 15Mo3 steel is mainly used for boilers and pressure vessels with elevated temperatures which is equivalent to EN10028 16Mo3 and UNI5869 15Mo3, 15D3 (NFA 36205 ) and ASTM A204Gr.
15mo3 material chemical composition
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
|---|---|---|---|---|---|---|---|---|---|
| 0.12 – 0.20 | 0.10 – 0.35 | 0.40 – 0.80 | 0.035 | 0.035 | 0.25-0.35 | – | – | – | – |
15mo3 Mechanical Properties
| Yield Strength | Tensile Strength | Elongation A5 min | |||
|---|---|---|---|---|---|
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 450 | 600 | – | 22 | ||
DIN17175 15Mo3 vs A213 T11
| Comparison Item | DIN17175 15Mo3 | ASME A213 T11 |
|---|---|---|
| Standard System | German Standard (DIN) | American Standard (ASME) |
| Material Type | Low Alloy Steel (Chrome-Molybdenum Steel) | Low Alloy Steel (Chrome-Molybdenum Steel) |
| Typical Chemical Composition | C: 0.12-0.20%, Si: ≤0.35%, Mn: 0.40-0.90%, P: ≤0.025%, S: ≤0.010%, Cr: 0.30-0.70%, Mo: 0.25-0.35% | C: 0.05-0.15%, Si: 0.10-0.50%, Mn: 0.30-0.60%, P: ≤0.025%, S: ≤0.025%, Cr: 0.90-1.30%, Mo: 0.44-0.65% |
| Tensile Strength | 450-600 MPa | 415-585 MPa |
| Yield Strength | ≥270 MPa | ≥205 MPa |
| Elongation | ≥22% | ≥30% |
| Typical Applications | Low and medium pressure boiler heating surface tubes (≤5.88 MPa, ≤450°C) | High pressure boiler superheater tubes, reheater tubes (≥9.8 MPa, 450-650°C) |
Quality III Requirement
DIN17175 15mo3 Seamless pipe factory
