SW7M/1.3343/HS6-5-2C

HIGH-SPEED STEEL

NORM: ISO 4957

APPLICATION:

Steel susceptible to machining tools, Tools with high performance and high core ductility, e.g. drill bits, milling cutters, screw dies, inserts for circular saw blades, broaches, relieved cutters, reamers and some cold work tools, e.g. cutting and blanking tools etc.

CHEMICAL COMPOSITION:

CSiMnPSCrMoWVCoNi
0,86-0,94Max 0,45Max 0,40Max 0,030Max 0,0303,80- 4,504,70-5,205,90-6,701,70-2,10--

MECHANICAL PROPERTIES:

Hardness after Tempering ºC Symbol Value
Soft annealing HB ≤269
Quenching with 1210 ºC in oil HRC 64
Quenching with 1210 ºC in oil and tempering

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

560 HRC 64
350 HRC 61.5
400 HRC 62
450 HRC 63
500 HRC 64
550 HRC 65
600 HRC 63
650 HRC 57
700 HRC 47

PHYSICAL PROPERTIES:

Property Unit Value
Density, ρ g*cm-3 8.11

Technological treatment processes:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1100-900
Rolling + 1100-900
Heat treatment Soft annealing + 790-840
Stress relieving + 600-700
Quenching Heating I + ~550
Heating II + 850
Austenitising + 1190-1230
Tempering + 550-570
Surface treatment Nitriding + 510-530
Coat application + PVD

INTERNATIONAL STEEL GRADES:

ISO EN Russia
HS6-5-2C ISO 4957:2004 HS6-5-2C ISO 4957:2004 ~R6M5 GOST 19265-73
US Japan China
~M2 ASTM A 600-92 ~SKH 51 JIS G 4403-1983 ~W6Mo5Cr4V2 GB 9943-88