8620 — ASTM A311
CTI Color-Brown
The most widely used carburizing alloy. The well balanced alloy content of this grade permits hardening to produce a string, tough core and high case hardness. Additionally 8620 has good welding characteristics.
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Chemistry
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| Carbon |
0.38/0.43
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| Manganese |
0.75/1.00
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| Phosphorus (Max.) |
0.035
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| Sulfur (Max.) |
0.04
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| Silicon |
0.15/0.35
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| Chromium |
0.80/1.10
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| Molybdenum |
0.15/0.25
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Typical Mechanical Properties
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| Tensile Strength |
95,000 psi
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| Yield Strength |
80,000 psi
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| Elongation in 2” |
15%
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| Reduction of Area |
50%
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| Brinell Hardness |
200
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Machinability
65% of 1212
Applications
Highly stressed parts, or parts subject to severe wear.