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In our selected range you can find the right material for virtually any application.
1.2312 Tool steel
Designation
| DIN: | 40 CrMnMoS 8-6 |
| AFNOR: | 40 CMD 8.S |
| UNI: | - |
| AISI: | P20 + S |
Chemical composition:
| C | 0.40 |
| Si | 0.40 |
| Mn | 1.50 |
| Cr | 1.90 |
| Mo | 0.20 |
| S | 0.06 |
Strength:
≈ 1080 N/mm²
Thermal conductivity at 100 °C:
35 W/m K
Character:
alloyed and pre-toughened tool steel, with excellent machinability in the hardened condition because of the Sulphur additive; high dimensional stability
Application:
plates for mold bases and die sets with increased requirements on strength; high-tensile machine parts
Treatment by
not recommended:
Etching, EDM
Polishing:
technical polishing possible; for higher surface requirements we recommend 1.2311 or 1.2738
Nitriding:
increases the steel's wear resistance
Heat treatment:
already pre-toughened; usually no heat treatment required
Nitriding:
Before nitriding, stress-relief annealing at 580 °C is recommended (Meusburger standard).
Hardening:
840 to 860 °C
Cooling:
down to 180 °C/220 °C in oil/hot bath
obtainable hardness: 52 HRC
Tempering:
slow heating to tempering temperature immediately after hardening; then maintain the temperature in the furnace for at least 1 hour per 25 mm part thickness
Technical tip:
- for increased surface quality requirements use material grade 1.2311
Available in the web shop as:
P-Standard plates
PR-Round plates
N-Standard bars
NP-Precision bars
NR-Round barsData sheet 1.2312
Material grades brochure
Material grades poster
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