
13CrMo44 is a structural alloy steel designed for high-temperature applications (up to 530C). Under the DIN 17175 or EN 10028 standards, it is categorized as a "Cr-Mo" (Chrome-Moly) steel. It is highly resistant to pressurized hydrogen and offers excellent weldability and heat resistance.
| Feature | Details |
| Standard | DIN 17175 / EN 10216-2 |
| Material Number | 1.7335 |
| Chemical Composition | Chromium (0.70% 1.10%), Molybdenum (0.40% 0.60%) |
| Tensile Strength | $440 - 590 \text{ MPa}$ |
| Yield Strength | $\ge 290 \text{ MPa}$ |
| Elongation | $\ge 22\%$ |
Because of its ability to maintain mechanical strength at high temperatures, 13CrMo44 round bars are used in:
Boiler Construction: Fabricating high-pressure boiler tubes and superheater coils.
Chemical Industry: Vessels and piping for high-temperature chemical reactions.
Power Generation: Steam turbine components and power plant pipelines.
Heat Exchangers: Components that require high thermal conductivity and strength.
High Heat Resistance: Reliable performance in environments exceeding 500C.
Weldability: Can be welded using common methods (though pre-heating is often recommended for thicker sections).
Dimensional Accuracy: Ensure you mention if your bars are Cold Drawn or Centerless Ground for precision engineering.
Corrosion Resistance: The Molybdenum content significantly improves resistance to pitting and crevice corrosion.
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