AISI 8620 Steel Forging
AISI8620 is an American alloy steel, and the implementation standard is ASTM A29/A29M – 2015AISI 8620. Forged AISI8620 material not only has corrosion resistance, high hardness and wear resistance, but also has excellent carburizing response. AISI price cost is very low. AISI8620 forging performance is very good and it is also convenient for machining.
AISI 8620 steel chemical elements
The chemical composition of ISI 8620 alloy steel is as follows:
Carbon (C): 0.18 – 0.23%
Silicon (Si): 0.15 – 0.35%
Manganese (Mn): 0.70 – 0.90%
Phosphorus (P): ≤0.035%
Sulfur (S): ≤0.040%
Chromium (Cr): 0.40 – 0.60%
Nickel (Ni): 0.40 – 0.70%
Molybdenum (Mo): 0.15 – 0.25%
AISEI 8620 steel forging physical properties
Density: 7850 kg/m³
- Thermal conductivity: 46.6 W/m·K
- Specific heat capacity: 470 J/kg·K
- Thermal expansion coefficient: 1.3×10⁻⁵ 1/°C
- Conductivity: 4.23×10⁶ S/m
- Resistivity: 2.36×10⁻⁷ Ω·m
Chromium, nickel and molybdenum increase the hardness and wear resistance of ISI 8620 material.
AISI 8620 steel mechanical properties
The mechanical properties of AISI8620 are as follows:
- Tensile strength (Ultimate): 530 MPa
- Yield strength (Yield): 385 MPa
- Young’s modulus (E): 190 – 210 GPa
- Bulk modulus (K): 140 GPa
- Shear modulus (G): 80 GPa
- Elongation: 10%
- Section reduction: 35%
- Poisson’s ratio (ν): 0.27 – 0.30
- Brinell hardness: 149
- Izzo impact value: 115 J.
AISI8620 has good processing performance, and its processing performance index is 65 (based on 100 processing performance of AISI 1212 steel). Due to its low sulfur content, the tool wear is less during processing, which is suitable for manufacturing parts that require high precision and complex shapes. Luoyang Forging can customize AISI8620 forged parts according to customer requirements.
How to heat treat AISI 8620 steel
Forged AISI 8620 steel heat treatment can be heat treated by quenching or normalizing methods to achieve the required mechanical properties. After heat treatment, its tensile strength can reach 545 MPa to 795 MPa. Specific heat treatment parameters are as follows:
- Normalizing temperature: 870-930 °C (1600-1700 °F)
- Annealing temperature: 860 °C (1575 °F)
- Carburizing temperature: 930 °C (1700 °F)
- Reheating temperature: 775-840 °C (1425-1550 °F)
AISI8620 has good processing performance, with a processing performance index of 65 (based on 100 processing performance of AISI 1212 steel). Due to its low sulfur content, tool wear is less during processing, suitable for manufacturing parts requiring high precision and complex shapes. Luoyang Forging can customize AISI8620 forging parts according to customer requirements.
AISI8620 is widely used in multiple industrial fields, including:
- Automotive industry: used to manufacture gears, crankshafts, camshafts and other components.
- Aerospace industry: manufacture aircraft components such as landing gears and engine components.
- Oil and gas industry: used to make drill pipes, shafts and other drilling equipment.
- Construction industry: used to make equipment such as cranes, excavators and bulldozers.
- Manufacturing industry: used to make tools, machine parts and gears.
