China · JB
ZG40Cr
JB/ZQ 4297:1986 — Alloy cast steel
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | 0.45 | ||
| Cr | 0.8 | 1.1 | ||
| Mn | 0.5 | 0.8 | ||
| P | 0.03 | |||
| S | 0.03 | |||
| Si | 0.2 | 0.4 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| castings, normalized and tempered, <= 100 mm | ≥345 | ≥630 | ≥18 | ≥26 | HB ≤212 |