CARBURISING STEEL

NORM: PN/EN 10084

Anmeldung:

Alloyed case hardening steel for the parts which require core tensile strength and high hardness. Susceptible to the large seized parts with high wearing resistance and loading such as: gears, screws, camshafts, bushings.

TECHNOLOGISCHE INFORMATIONEN::

Steel adjusted for cutting with a cutting machine. The carburising temperature range can be higher than provided in the file (depending on the carburising process)

Zwischenprodukte:

Steel adjusted for cutting with a cutting machine. The carburising temperature range can be higher than provided in the file (depending on the carburising process)

Chemische Zusammensetzung:

CSiMnPSCrMoNiB
0,15 – 0,21Max 0,400,50 – 0,90Max 0,025Max 0,0351,50 – 1,800,25 – 0,351,40 – 1,70-

Mechanische Eigenschaften:

Hardness after Symbol Value
Soft annealing (+A) HB ≤ 229
Heat treatment (carburising, quenching and tempering) (+QT) HRC ≥ 60
Ultimate tensile strength Rm, after quenching and tempering at 200 °C:
Diameter, d, mm d ≤ 16 16 < d ≤ 40 40 < d ≤ 100
Rm, MPa 1160 1080 900

PHYSIKALISCHE EIGENSCHAFTEN:

Property Unit Value
Density, ρ g·cm-3 7.85

Technologische Verarbeitung:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1150 – 850
Rolling + 1150 – 850
Thermochemical treatment Carburising + 880 – 980
Carbonitriding + 860 – 950
Heat treatment Annealing Normalising + 830 – 870
Soft annealing + 650 – 700
Heat treatment after carburising1) Core hardening + 830 – 870
Intermediate annealing + 630 – 650
Case hardening + 780 – 820
Tempering + 150 – 200
1) If possible, hardening has to be performed with the temperature equal or close to the heat treatment temperature

INTERNATIONALE STAHLSORTEN:

ISO EN Russia
~18CrNiMo7 ISO 683-11:1987 18CrNiMo7-6 EN 10084:1998
US Japan China