what is DIN 17175 16Mo5
The DIN 17175 16Mo5 hot rolled heat-resistant seamless steel pipe is a high-quality pipe specifically designed for boiler applications.
What is DIN 17175 grade 16Mo5 equivalent material?
The ASTM A513 equivalent is DIN 17175 Grade 16Mo5, ASTM A513, and ASME SA513.. ASTM A513 detail covers electric-resistance welded carbon steel tubing for use as mechanical and decorative tubing.
chemical composition of DIN 17175 16Mo5 hot rolled heat-resistant seamless steel pipe
| Element | Composition (%) |
|---|---|
| C | 0.12-0.20 |
| Si | 0.10-0.35 |
| Mn | 0.40-0.90 |
| P | ≤0.025 |
| S | ≤0.020 |
| Cr | 0.70-1.15 |
| Mo | 0.25-0.35 |
mechanical properties of DIN 17175 16Mo5 hot rolled heat-resistant seamless steel pipe
| Property | Value |
|---|---|
| Tensile strength | 440-590 MPa |
| Yield strength | ≥ 290 MPa |
| Elongation | 22% (longitudinal) |
| Impact energy | ≥27 J (longitudinal) |
| Hardness | ≤ 255 HB (up to 100mm) |
Production Process:
16Mo3 seamless steel pipes are mainly produced using hot-rolling or cold-drawing processes. The hot-rolling process involves steps such as piercing of round steel → hot-rolling → sizing → straightening → inspection, while the cold-drawing process achieves higher precision through die drawing. High-quality 16Mo3 steel pipes need to meet the following key control points:
Composition Control: Strictly limit the content of harmful elements such as sulfur and phosphorus (typically S ≤ 0.025%, P ≤ 0.025%);
Heat Treatment Process: Normalizing (at 900-960°C) or quenching + tempering treatment to ensure uniformity of the microstructure;
Non-destructive Testing: Full coverage with ultrasonic flaw detection, eddy current testing, etc., to eliminate internal defects.
