CARBON TOOL STEEL

NORM: ISO 4957

APPLICATION:

Steel susceptible to simple manual tools, cold heading dies, die casting tools, hand tools, tongs, agricultural tools, blanking tools, axes, anvil cutters, ordinary and blacksmith’s hammers, anvils and auxiliary blacksmith’s tools.

CHEMICAL COMPOSITION:

CSiMnPSCrMoWVCoNi
0,42-0,500,15-0,400,60-0,80Max 0,030Max 0,030------

MECHANICAL PROPERTIES:

Hardness after Tempering ºC Symbol Value
Soft annealing HB ≤207
Quenching with 810 ºC in water HRC 54
Quenching with 810 ºC in water and tempering 180 HRC ≥54
200 HRC 54
250 HRC 52
300 HRC 48
350 HRC 45
400 HRC 42
450 HRC 39
500 HRC 35

PHYSICAL PROPERTIES:

Property Unit Value
Density, ρ g*cm-3 7.85
Thermal expansion, α20-100ºC) K-1 11.65*10-6
Thermal conductivity, λ20ºC) W*m-1*K-1 49.4

Technological treatment processes:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1100-850
Rolling + 1100-850
Treatment Heat treatment Quenching + 800-820
Tempering + 170-190
Precipitation strengthening Supersaturation
Ageing
Annealing Soft annealing + 680-710
Stress relieving + 600-700
Thermochemical treatment Nitriding
Other

INTERNATIONAL STEEL GRADES:

ISO EN Russia
C45U ISO 4957:1991 C45U EN ISO 4957:1999
US Japan China