Through hardening steels
GD223
Spécifications
Common name
X50CrNiMn12
Z50CNM12
Z50CNM12
EU
X60NiMnCr13-5-3
BS
S131
Composition
C
0.6
Ni
11
Cr
3
Mo
0.4
Mn
5
Applications
• Fasteners used for assembly of light alloy components working at high temperatures.
• Distribution tubes for valveless engines with pistons and cylinders in light alloys.
• Precombustion chambers fitted to light alloy piston heads for diesel engines.
Characteristics
• Steel with a coefficient of expansion close to that of aluminum.
• Mechanical properties can be enhanced by work hardening.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
KCU (J/cm²) |
|---|---|---|---|---|
| Annealed condition | 700 | 300 | 55 | 300 |
| Work hardened condition | 1000 | 800 | 35 |
Key to heat treatment symbols
| Solution treated | H | Annealed | R |
|---|---|---|---|
| Thermo-mechanical treatment | TM | Quenched and tempered | T+RV |
| Sub-zero treatment | F | Solution treated and aged | H+V |