HOT WORK TOOL STEEL

NORM: ISO 4957

Anmeldung:

Steel susceptible to die inserts for heavy metals, forging dies and small dies for presses and upsetting machines, extrusion tools, elements of moulds for pressure die casting of alloys, mandrels.

Chemische Zusammensetzung:

CSiMnPSCrMoWVCoNi
0,28-0,350,10-0,400,15-0,45Max 0,030Max 0,0302,70-3,202,50-3,00-0,40-0,70--

Mechanische Eigenschaften:

Hardness after Tempering ºC Symbol Value
Soft annealing HB ≤229
Quenching with 1040 ºC in oil HRC 53
Quenching with 1040 ºC in oil and tempering

(cooling during quenching can be performed gradually in the salt bath at around 550 ºC and then cooled in the air)

550 HRC ≥46
350 HRC 51
400 HRC 51.5
450 HRC 51.5
500 HRC 50.5
550 HRC 49
600 HRC 46.5
650 HRC 40

PHYSIKALISCHE EIGENSCHAFTEN:

Property Unit Value
Density, ρ g*cm-3 7.82
Thermal expansion, α20-100ºC) K-1 12.4*10-6
Thermal conductivity, λ20ºC) W*m-1*K-1 36

Technologische Verarbeitung:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1100-850
Rolling + 1100-850
Treatment Heat treatment Quenching + 1030-1050
Tempering + 450-570
Precipitation strengthening Supersaturation
Ageing
Annealing Soft annealing + 740-770
Stress relieving + 600-680
Thermochemical treatment Nitriding + 470-520
Other

INTERNATIONALE STAHLSORTEN:

ISO EN Russia
32CrMoV12-28 ISO 4957:2004 32CrMoV12-28 ISO 4957:2004 3H3M3F GOST 5950-73
US Japan China
H10 ASTM A 681-91 SKD 7 JIS G 4404-1983 ~4Cr3Mo3SiV GB 1299-85