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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