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AISI 8620 Alloy Steel Round Bar

C Mn P S Si Ni Cr Mo
0.20 1.70 0.020-0.025 0.010-0.015 0.80 2.0 1.50 0.70

 

AISI 8620 Steel is a hardenable chromium, molybdenum, nickel low alloy steel more often used for carbonizing to advance a case-hardened phase. This case-hardening will influence in just right wear traits. This Grade is in most cases used for gears, ring gears, shafts and crankshafts.

 

STEEL PROPERTIES

  • AISI 8620 is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case hardened part. This case-hardening will result in good wear characteristics.

 

PHYSICAL PROPERTIES

Thermal Conductivity at °C W / (m*K)
20 46.0
350 46.2
700 46.4

 

Application

 

Application- Gears, shafts and other applications where a hard carborized case and a tough core are desired.

HEAT TREATMENT

Soft Annealing °C Cooling Hardness HB
820-850 Furnace max. 290

 

Stress-relief Annealing °C Cooling
600-650 Furnace

 

1st Pre-Heating °C up to approx. 400 in an air-circulating furnace
2nd and 3rd 780 and 850
Hardening °C 840-870
Quenching 810 °C Oil ,Quench
Tempering °C at least twice 150-200
Hardness after Temperature HRC 62 – 64