SSA8620 Nickel Chromium Case-Hardened Steel, AISI 8620, JIS SNCM 220, Werkstoff 1.6523, DIN 20NiCrMo2-2
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The addition of nickel, chromium, and molybdenum enhances the hardenability of SSA8620, allowing it to be case-hardened to achieve a tough, wear-resistant surface layer while maintaining a ductile core. This makes SSA8620 an ideal choice for parts that require both high surface hardness and core toughness. We import from Europe, Japan and China.
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Detail
| Trade Name | Technical Delivery Condition | Annealed Hardness | C (%) | Si (%) | Mn (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| SSA8620 | Annealed | 207 HB | 0.18 - 0.23 | 0.15 - 0.35 | 0.70 - 0.90 | 0.40 - 0.60 | 0.40 - 0.70 | 0.15 - 0.25 |
| Werkstoff | DIN standard | AISI | BS | JIS |
|---|---|---|---|---|
| 1.6523 | 20NiCrMo2-2 | 8620 | 805 M20 | SNCM220 |
Type of steel and characteristics:
Low alloyed chromium nickel molybdenum case hardening steel.
Applications:
Light to medium stressed components requiring high surface wear resistance with reasonable core strength and impact properties. Typical uses are: arbors, bearings, bushings, camshafts, differential pinions, guide pins, kingpins, pistons pins, splined shafts, ratchets, sleeves etc.
Heat Treatment:
Hot Forging -1150 - 850°C
Normalizing - 850 - 900°C
Soft Annealing - 650 - 700°C
Carburizing - 880 - 980°C oil
Intermediate Annealing - 630 - 650°C
Core Hardening - 860 - 900°C
Case Hardening - 780 - 820°C
Quenchant - Oil, water, salt bath
Tempering - 150 - 200°C
Specification
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