Plastic Mold Steel 1.2312 ( 40CrMnMoS8-6)
Designation
DIN: 40 CrMnMoS 86
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-hardened 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

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

steely.ir(1.2312)

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plastic mold steel , 1.2312, 1.2311, 1.2738, 1.2316, 1.2083 , فولاد قالب پلاستیک ، فروشگاه فولاد ، قیمت فولاد ، فولاد آسمان ،

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