CARBURISING STRUCTURAL STEEL

NORM: PN-89/H-84030/02

Anmeldung:

Steel susceptible to loaded parts with a high core strength. Especially for gear wheels and shafts.

TECHNOLOGISCHE INFORMATIONEN::

The steel can be welded before carburising, but after pre-heating.

Zwischenprodukte:

The steel can be welded before carburising, but after pre-heating.

Chemische Zusammensetzung:

CMnSiPSCrNiMoWVTiCu
0,17 - 0,230,80 - 1,100,17 - 0,37Max 0,035Max 0,0351,00 - 1,30Max 0,30-Max 0,20Max 0,050,05 - 0,12Max 0,30

Mechanische Eigenschaften:

Property Symbol Unit Value
Ultimate tensile strength Rm MPa ≥ 980
Yield stress Re (Rp0.2) MPa ≥ 830
Elongation A % ≥ 9
Reduction of area Z % ≥ 50
Impact energy KV J ≥ 80
Hardness after soft annealing HB ≤ 217

Technologische Verarbeitung:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1100 – 850
Rolling + 1100 – 850
Thermochemical treatment Carburising + 880 – 950
Carbonitriding + 860 – 930
Heat treatment Annealing Normalising + 880 – 900
Soft annealing + 650 – 700
Heat treatment after carburising1) Core hardening + 850 – 880
Intermediate annealing + 660 – 680
Case hardening + 810 – 830
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
~18ChGT GOST 4543-71
US Japan China