Unveiling the Strength and Versatility of 25CrMo4 KB Steel Grade: A Deep Dive into its Applications

Unveiling the Strength and Versatility of 25CrMo4 KB Steel Grade: A Deep Dive into its Applications – Specification

Mechanical Properties:
– High tensile strength: 800-1000 MPa
– Yield strength: 650-750 MPa
– Elongation: 15-20%
– Hardness: 217-255 HB
– Impact toughness: 35-50 J/cm2

Technical Properties:
– Density: 7.85 g/cm3
– Melting point: 1400-1440°C
– Thermal conductivity: 42 W/(m·K)
– Electrical conductivity: 0.18 x 10^6 A/(V·m)

Chemical Composition:
– Carbon (C): 0.22-0.29%
– Silicon (Si): 0.15-0.35%
– Manganese (Mn): 0.60-0.90%
– Phosphorus (P): ≤0.025%
– Sulfur (S): ≤0.020%
– Chromium (Cr): 0.90-1.20%
– Molybdenum (Mo): 0.15-0.30%

Applications:
– Automotive components: crankshafts, camshafts, connecting rods, axle shafts, steering knuckles
– Bicycle frames and components: frames, forks, handlebars
– Construction equipment: crane booms, excavator arms, loader buckets
– Energy industry: turbine rotor shafts, power transmission components
– Aerospace industry: landing gears, engine components
– Oil and gas industry: drill collars, drill pipes, pipe fittings

Overall, the 25CrMo4 KB steel grade is known for its strength, versatility, and wide range of applications in various industries. Its mechanical properties, technical properties, and chemical composition make it suitable for demanding applications that require high tensile strength and resistance to fatigue, impact, and wear.