SPRING STEEL

NORM: GOST 14959-79

Anmeldung:

Steel susceptible to steel for small cross-section springs and leaf springs, spring with low hardenability

Chemische Zusammensetzung:

CSiMnPSCrMoNiB
0,62-0,700,17-0,370,90-1,2--Max. 0,25---

Mechanische Eigenschaften:

Unit Value
Hardness after thermal treatment HB Max. 241
Quenching in oil Temperature 830 °C
Tempering Temperature 470 °C
Yield stress Re (Rp0.2), MPa Min. 785
Ultimate tensile strength Rm MPa Min. 980
Elongation A, % Min. 8
Reduction of area Z, % Min. 30
Impact energy KV, J
Physical properties
Property Unit Value
Density, ρ g·cm-3 7.85

Technologische Verarbeitung:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 800 – 1180
Rolling + 850 – 1180
Heat treatment Annealing Normalising + 810 – 830
Soft annealing + 640 – 680
Heat treatment after carburising1) Quenching + 810 – 830
Tempering + 640 – 680