Heat Treated Steel
Chemical Composition
Characteristics
Classic die steel with through-hardening properties up to a reference diameter of 450mm.
For larger dimensions we recommend grade 2714 ISO-B MOD or hardening and tempering after
contour roughing. For hardness up to 440 HB (approx. 1500 MPa).
Applications
Large press dies for forming aluminium, forging dies for large quantities regardless of die size and
shape of cut, die and mould holders, tool holders and cold forging die holders, tool cassettes.
Hydroforming moulds (IHU).
Delivered condition
Annealed to max. 248 HB
Quenched and tempered to 370–415 HB (approx. 1250–1400 MPa)*
or to customer specifi cation
Physical properties (reference values)
| C | Si | Mn | P | S | Cr | Mo | Ni | V | ||
| Typical analysis | 0.52 | 0.25 | 0.80 | 0.025 | 0.004 | 1.10 | 1.70 | 0.45 | 0.10 | |
| Chemical composition as per SEL | 0.50–0.60 | 0.10–0.40 | 0.60–0.90 | ≦0.030 | ≦0.030 | 0.80–1.20 | 1.50–1.80 | 0.35–0.55 | 0.05–0.15 |
Figures in % by mass
| Register of European Steels (SEL) |
55 NiCrMoV 7 |
| DIN EN ISO 4957 | 55 NiCrMoV 7 |
| AFNOR | 55 NCDV 07 |
| AISI | L 6 |
Classic die steel with through-hardening properties up to a reference diameter of 450mm.
For larger dimensions we recommend grade 2714 ISO-B MOD or hardening and tempering after
contour roughing. For hardness up to 440 HB (approx. 1500 MPa).
Applications
Large press dies for forming aluminium, forging dies for large quantities regardless of die size and
shape of cut, die and mould holders, tool holders and cold forging die holders, tool cassettes.
Hydroforming moulds (IHU).
Delivered condition
Annealed to max. 248 HB
Quenched and tempered to 370–415 HB (approx. 1250–1400 MPa)*
or to customer specifi cation
Physical properties (reference values)
| Thermal expansion coeffi cient (10–6/K) |
20–100 °C 12.2 |
20–250 °C 13.1 |
20–500 °C 14.2 |
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| Thermal conductivity (W/mK) |
20 °C 36.0 |
250 °C 37.5 |
500 °C 34.5 |
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| Young’s modulus (GPa) |
20 °C 215 |
250 °C 198 |
500 °C 175 |
