WNL/1.2713/55NiCrMoV6

HOT WORK TOOL STEEL

NORM: PN-86/H-85021

APPLICATION:

Steel susceptible to tool applications. For bearings, springs, rollers, chuck parts, homogeneous average and small drop forging dies and for anvils for presses and hammers, a trimming plate, for less loaded tools for the extrusion of pipes and rods of copper and light metal alloys and stamping dies for the extrusion of plastic products, moulds for forging, die holders, piercers.

CHEMICAL COMPOSITION:

CSiMnPSCrMoWVCoNi
0,50-0,600,15-0,400,50-0,80Max 0,030Max 0,0300,50-0,800,15-0,25---1,40-1,80

MECHANICAL PROPERTIES:

Hardness after Tempering ºC Symbol Value
Soft annealing HB ≤241
Quenching HRC 62
Quenching and tempering 300 HRC 53
350 HRC 51
400 HRC 49
450 HRC 47
500 HRC 44.5
550 HRC 42
600 HRC 37.5

Technological treatment processes:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1100-850
Rolling + 1100-850
Treatment Heat treatment Quenching + 840-860
Tempering + 450-550
Precipitation strengthening Supersaturation
Ageing
Annealing Soft annealing + 650-680
Stress relieving + 600-650
Thermochemical treatment Nitriding + 470-550
Other

INTERNATIONAL STEEL GRADES:

ISO EN Russia
55NiCrMoV6 DIN 17350 5XHM GOST 5950-73
US Japan China
SKT4 JIS G4404-1972