Designation
DIN: | 115 CrV 3 |
AFNOR: | 100 C3 |
UNI: | 107 CrV 3 KU |
AISI: | L2 |
Chemical composition:
C | 1.18 |
Si | 0.25 |
Mn | 0.30 |
Cr | 0.70 |
V
| 0.10 |
Strength:
max. 220 HB
(≈ max. 750 N/mm²)
Thermal conductivity at 100 °C:
33 W/m K
Character:
Chrome-Vanadium alloyed cold-work steel with high wear resistance; also known as silver steel.
Application:
small turned parts, core pins, punches and engraving tools
Treatment by
unusual:
Polishing, etching, EDM, nitriding, hard chroming
Heat treatment:
Soft annealing:
710 to 740 °C for about 2 to 5 hours; slow controlled cooling of 10 to 20 °C per hour to about 600 °C; further cooling in air, max. 220 HB
Hardening:
780 to 840 °C
15 to 30 minutes keeping curing temperature
quenching in water/oil
obtainable hardness: 64-66 HRC
Tempering:
slow heating to tempering temperature immediately after hardening;
minimum time in furnace: 1 hour per 20 mm part thickness,
min. 2 hours/cooling in air
Annealing graph:
Technical tip:
- Silver steel 1.2210 is finish-ground to h9 tolerance.
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