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Lowering tension

In our selected range you can find the right material for virtually any application.

Franz Kohler
Head of Product Division

1.2714 HH Steel for through hardening

Designation

DIN:55 NiCrMoV 7
AFNOR:55 NCDV 7
UNI:-
AISI:L6
 

Chemical composition:

C0.56
Cr1.10
Mo0.50
Ni1.70
V0.10
 

Strength:

≈ pre-toughened to 1320 N/mm² (≈ 42HRC)

Thermal conductivity at 100 °C:

36 W/m K


Character:

steel for through-hardening with good heat resistance, hardenability and toughness

Application:

Inserts, cores and slides for injection molds


Treatment by

Polishing:
 technical polishing possible

is possible:
EDM, nitriding, etching and hard chroming

 


Heat treatment:

Soft annealing:
 650 to 700 °C for about 4 to 5 hours; slow controlled cooling of 10 to 20 °C per hour to about 600 °C; further cooling in air, max. 248 HB

Hardening:
 950 to 980 °C
 15 to 30 minutes keeping curing temperature
 quenching in water/oil
 obtainable hardness: 56 HRC

Tempering:
 Slow heating to tempering temperature immediately after hardening. Minimum time in furnace: 1 hour per 20 mm part thickness

Annealing graph:

Available in the web shop as:
Data sheet 1.2714 HH

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Material grades brochure

Material grades brochure

Material grades poster

Material grades poster

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