|
|
|
AISI 8620H |
 |
|
| Category | Steel |
| Class | Alloy steel |
| Type | H-steel |
| Common Names | Nickel-chromium-molybdenum steel |
| Designations |
France: AFNOR 20 NCD 2 , AFNOR 22 NCD 2
Germany: DIN 1.6523
Italy: UNI 20 NiCrMo 2
Japan: JIS SNCM 21 , JIS SNCM 21 H
United Kingdom: B.S. 805 H 20 , B.S. 805 M 20
United States: ASTM A304 , SAE J1268 , UNS H86200
|
| Composition |
|
|
| Element | Weight % |
| C |
0.17-0.23 |
| Mn |
0.60-0.95 |
| Cr |
0.35-0.65 |
| Ni |
0.35-0.75 |
| Mo |
0.15-0.25 |
| P |
0.035 |
| S |
0.040 |
| Si |
0.15-0.30 |
|
|
| Mechanical Properties |
|
|
| Properties | Conditions |
| T (°C) | Treatment |
| Density (×1000 kg/m3) |
7.7-8.03
|
25 |
|
| Poisson's Ratio |
0.27-0.30 |
25 |
|
| Elastic Modulus (GPa) |
190-210
|
25 |
|
| Tensile Strength (Mpa) |
650 |
25 |
annealed at 870°C more |
| Yield Strength (Mpa) |
385 |
| Elongation (%) |
31.3 |
| Reduction in Area (%) |
62 |
| Hardness (HB) |
149 |
25 |
annealed at 870°C more |
|
