Mechanical Properties:
– High temperature strength: 13CrMo4-4 steel grade has excellent strength and resistance to high temperature environments, making it suitable for use in heat exchangers and boiler tubes.
– High creep resistance: This steel grade has good creep resistance, meaning it can withstand prolonged exposure to elevated temperatures without significant deformation or failure.
– Good toughness: 13CrMo4-4 exhibits good toughness, allowing it to withstand mechanical stress and impact without cracking or fracturing.
– High corrosion resistance: The steel grade has good resistance to corrosion, ensuring the long-term efficiency and reliability of heat exchangers and boiler tubes.
Technical Properties:
– Thermal conductivity: 13CrMo4-4 exhibits good thermal conductivity, allowing for efficient heat transfer in heat exchangers and boiler tubes.
– Thermal expansion coefficient: The steel grade has a relatively low thermal expansion coefficient, which helps maintain dimensional stability and prevents distortion or leakage in heat exchangers and boiler tubes.
– Material density: 13CrMo4-4 has a moderate density, which helps reduce the weight of heat exchangers and boiler tubes while maintaining structural integrity.
Chemical Composition:
The chemical composition of 13CrMo4-4 steel grade typically includes:
– Carbon (C): 0.08-0.18%
– Silicon (Si): 0.35% maximum
– Manganese (Mn): 0.40-0.70%
– Phosphorus (P): 0.025% maximum
– Sulfur (S): 0.010% maximum
– Chromium (Cr): 0.70-1.15%
– Molybdenum (Mo): 0.40-0.60%
These chemical elements contribute to the overall strength, resistance to high temperatures, and corrosion resistance of 13CrMo4-4 steel grade, making it suitable for use in demanding heat exchanger and boiler tube applications.
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