Description

1.2311 Steel Plate 310 x 160 / DIN 40CrMnMo7 / AISI P20 / SAE P20.

Buy European and American quality steel in India 1.2311 Steel Plate 310 x 160 | DIN 40CrMnMo7 | AISI P20 | SAE P20.

 

We have European and American quality steel grades DIN 1.2311 Steel Plate (DIN 40CrMnMo7, AISI P20, SAE P20).

always buy high-quality steel with a Non-destructive lab certificate.

DESIGNATION
AFNOR:	40 CMD 8
UNI:	35 CrMo 8 KU
AISI:	P20
download	40 CrMnMo 7

CHEMICAL COMPOSITION:
C	0.40
Si	0.40
Mn	1.50
Cr	1.90
Mo	0.20

STRENGTH:

280 – 325 HB
(≈ 950 – 1100 N/mm²)

THERMAL CONDUCTIVITY AT 100 °C:

35 W/m K

CHARACTER:

alloyed and pre-toughened tool steel, especially suitable for polishing and nitriding; high dimensional stability.

APPLICATION:

cavity plates, inserts, and high-tensile machine parts.

TREATMENT BY

possible:
Etching, EDM

Polishing:
excellent polishing; for higher surface requirements we recommend steel for through hardening

Nitriding:
increases the steel’s wear resistance

Hard chroming:
particularly increases the steel’s wear resistance and corrosion resistance.

HEAT TREATMENT:

already pre-toughened; usually, no heat treatment is required.

Nitriding:
Before nitriding, stress-relief annealing is recommended at 580 °C. (Meusburger standard).

Hard chroming:-
After the hard chroming, the mold must be annealed for about 3 to 4 hours at 180 °C to avoid brittle fractures from hydrogen.

Hardening:- 840 to 860 °C.

Cooling:-
to 180 °C/220 °C in an oil/hot bath, then in the air to about 100 °C obtainable hardness: 52 HRC.

Tempering:-
Slow heating to tempering temperature immediately after hardening. Minimum time in a furnace: 1 hour per 25 mm part thickness.

Annealing graph:-