Composition:
25CrMo4 is a type of steel that belongs to the EN 10083-3 standard, which specifies the technical delivery conditions for alloy steels. It has a precise chemical composition that includes the following elements:
– Carbon (C): 0.22-0.29%
– Silicon (Si): 0.40% max
– Manganese (Mn): 0.60-0.90%
– Phosphorus (P): 0.025% max
– Sulfur (S): 0.035% max
– Chromium (Cr): 0.90-1.20%
– Molybdenum (Mo): 0.15-0.30%
Technical Properties:
25CrMo4 has excellent mechanical properties, making it suitable for a wide range of applications. Some of the key technical properties of this steel grade include:
– Tensile strength: 900-1100 MPa
– Yield strength: 650 MPa (min)
– Elongation: 20% (min)
– Impact energy: 35J (min) at -20°C
These properties make 25CrMo4 ideal for components that require high strength and toughness, such as gears, crankshafts, and axle shafts.
Chemical Composition:
The chemical composition of 25CrMo4 plays a crucial role in determining its mechanical properties. The presence of chromium and molybdenum provides excellent hardenability, high fatigue strength, and good wear resistance. Additionally, the controlled levels of carbon, manganese, and other alloying elements contribute to the steel’s overall performance.
Uses:
Due to its exceptional mechanical properties, 25CrMo4 is extensively used in the manufacturing of various engineering components. Some common applications of this steel grade include:
– Manufacturing of gears, shafts, and crankshafts in the automotive industry
– Construction of high-strength and lightweight components in the aerospace industry
– Production of pressure vessels and piping systems in the oil and gas sector
– Fabrication of mechanical parts for machinery and equipment in the manufacturing industry
In conclusion, 25CrMo4 is a versatile steel grade with a precise composition and excellent mechanical properties. Its high strength, toughness, and hardenability make it a preferred choice for numerous engineering applications across different industries.
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