The 15Mo3 steel grade has a tensile strength of 450-600 MPa and a yield strength of 275 MPa. Its elongation at break is 22% and its impact toughness is greater than 40 J/cm2 at -20°C. This steel grade has good creep resistance and is suitable for use at elevated temperatures.
Technical Properties:
The weldability of 15Mo3 steel grade is good, with the recommended preheat and interpass temperature being 200-250°C. Post-weld heat treatment is also recommended to enhance the mechanical properties of the welded joint. In terms of formability, the 15Mo3 steel grade can be easily formed and welded using conventional methods.
Chemical Composition:
The chemical composition of 15Mo3 steel grade includes 0.12-0.20% carbon, 0.40-0.60% manganese, 0.25-0.35% silicon, 0.025% phosphorus, 0.010% sulfur, 0.30% chromium, and 0.25% molybdenum. This composition provides the steel with good weldability, formability, and high-temperature properties.
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