AISI 440 stainless steel for bearing parts

GNEE has been specialized in the export of stainless steel pipes, stainless steel coils, stainless steel rods, stainless steel wires, stainless steel plates, nickel-based alloys, etc. for 16 years. We have great professionalism in the field of stainless steel. If you have any questions about 440 stainless steel materials, please feel free to ask us!

AISI 440 stainless steel chemical composition
440A: Carbon (C) 0.60-0.75%, Chromium (Cr) 16.0-18.0%, Molybdenum (Mo) 0.75%
440B: Carbon (C) 0.75-0.95%, Chromium (Cr) 16.0-18.0%, Molybdenum (Mo) 0.75%
440C: Carbon (C) 0.95-1.20%, Chromium (Cr) 16.0-18.0%, Molybdenum (Mo) 0.75%

AISI 440 stainless steel physical properties
Density: 7.8 g/cm3
Melting point: 1370-1480C
Specific heat capacity: 460 J/(Kg·K)(0-100°C).
Resistivity: 0.6 uQ·m(20"C)
Elastic modulus: 200 GPa.
Thermal conductivity: 24.2 W/m·K(100°C)
Coefficient of thermal expansion: 10.2(0-100"C)

AISI 440 stainless steel mechanical properties
440A: tensile strength ≥725 MPa, yield strength ≥415 Pa, elongation 20%
440B: tensile strength ≥740 MPa, yield strength ≥425 MPa, elongation ≥18%
440C: tensile strength ≥760 MPa, yield strength ≥450 MPa, elongation ≥14%

AISI 440 stainless steel heat treatment
AISI 440 stainless steel can be improved through heat treatment processes such as annealing, quenching and tempering. For example, a typical heat treatment process for 440C includes: Annealing: Subcritical annealing in the range of 675-760°C (1250-1400F)
Quenching: Heating to 1010-1065℃ and quenching in air or oil
Tempering: Tempering in the range of 150-370"C to obtain different hardness and mechanical properties

AISI 440 stainless steel is used to manufacture bearing parts working in corrosive environments, high-quality tools (such as medical scalpels, scissors and blades, surgical and dental instruments), molds, springs, cutlery, valves and valve parts, cams, gears, shafts, ball bearings, nozzles and measuring tools, etc.