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  • Alloy
8620

8620 Product Guide


Applications | Specifications | Mechanical and Chemical Data | Tolerances


Overview

A medium-strength, low-carbon alloy steel, 8620 contains good toughness and strength properties, along with good core strength. 8620 has a high case toughness and above average core toughness due to the nickel content. Additionally, it is the most widely used carburizing alloy steel. Typical uses include gears, cranks, shafting, axles, bushings, heavy duty pins, bolting, springs, hand tools, gears, and many other machinery parts.

 

Common Trade Names

UNS G86200, AISI 8620 



Other Resources

Weight Calculator | Mill Test Reports

 

Products

8620 Round Bar

Applications

  • Gears
  • Shafts
  • Bushings
  • Heavy Duty Pins
  • Springs
  • Hand Tools

Specifications


ASTM

A108



Physical Properties 8620
 
Density 0.284 lb/in3
Ultimate Tensile Strength 92 ksi
Yield Tensile Strength 52 ksi
Shear Strength 59 ksi
Shear Modulus 11.6 ksi
Hardness Rockwell | Brinell B89 | 183
Elongation at Break Percentage 26%
Modulus of Elasticity 30,000 ksi
Reduction of Area Percentage 60%
Poisson's Ratio 0.29
Machinability Percentage 66%
Melting Point 2,580-2,650 °F
Specific Heat 1.14 x 10^-1 BTU/lb-°F
Thermal Conductivity 323 BTU-in/hr-ft^2-°F


Chemistry Information
Element
Percentage
C 0.18 - 0.23
Cr 0.4 - 0.6
Fe 96.9 - 98.02
Mn 0.7 - 0.9
Mo 0.15 - 0.25
Ni 0.4 - 0.7
P 0.035 max
Si 0.15 - 0.35
S 0.04 max
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