National Standard |
Grade | C% | Si% | Mn% | Cr% | Mo% | Ni% | P% | S% |
DIN | (1.5919) |
0.14-0.19 | ≤0.4 | 0.4-0.6 | 1.4-1.7 | - | 1.4-1.7 | ≤0.025 | ≤0.035 |
Heat Treatment
Normalizing For 15CrNi6
1.Nominal normalizing temperature:850-880°C
2.Hold the temperature for several hours
3.Cooling in the air
Annealing For 15CrNi6
1.Nominal Annealing temperature:650-700°C
2.Cool slowly in the furance
3.Maximum Brinell hardness of 229
Hardening and Tempering(QT) For 15CrNi6
1.Nominal Hardening temperature:820-870°C
2.Hold at this temperature then quench in oil or water
3.Tempering as soon as possible when the temperature low to ambient
4.Heat uniformly to the suitable temperature.
5.keep the material out of the furnace ,then cool in the air
Mechanical Property( for reference only)
1.Tensile strength: 880-1100MPa
2.Yield point: 635MPa
3.Percentage reduction of area after fracture: 40%
4.Elongation after fracture: 11%
5.Impact test (+20°C): Longitud – 40~60J
Quality Certification
A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non Metallic Inclusion
5.Heat Treatment Process
6.Grain size
7.Forging ratio
8.NDE test method/criteria
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