1.2714 steel for through hardening at Meusburger

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1.2714 Steel for through hardening

Designation

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

Chemical composition:

C	0.56
Cr	1.10
Mo	0.50
Ni	1.70
V	0.10

Strength:

max. 250 HB
(≈ max. 850 N/mm²)

Thermal conductivity at 100 °C:

36 W/m K

Character:

steel for through hardening, with high temperature resistance, through hardenability and toughness

Application:

extrusion dies, hot-forging tools, dies for processing tin, lead and zinc alloys

Treatment by

Polishing:
technical polishing is 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

To the mould making overview To the die making overview

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