| Quality | 17NiCrMo6-4 |
| Category | Special steel |
| Standard ref. |
UNI EN 10084 |
| Werkstoff nr. | 1.6566 |
Descrizione
It is a non-alloyed steel which can be quenched in oil and in water. It is possible to produce large-scale pieces with adequately transformed structures. It is one of the most used carbon steel in Europe. It is the most well-known case-hardening steel in Italy due to the excellent properties which make 17NiCrMo6-4 suitable for several application. It has got a medium-high hardenability and a good workability. After casehardening and quenching treatment the surface reaches a considerable hardness. It is employed to produce mechanical parts subject to wear (gears, camshafts, bushings, pinions and pins).
Chemical composition 17NiCrMo6-4(%)
|
C
|
Mn
|
P
|
S
|
Cr
|
Si
|
Mo
|
Ni
|
||||||
|
min
|
max
|
min
|
max
|
max
|
max
|
min
|
max
|
min
|
max
|
min
|
max
|
min
|
max
|
|
0,14
|
0,20
|
0,60
|
0,90
|
0,035
|
0,035
|
0,80
|
1,10
|
0,15
|
0,40
|
0,15
|
0,25
|
1,20
|
1,50
|
Mechanical characteristics 17NiCrMo6-4
|
Hot-rolled with hardening core (Ø of the specimen in mm)
indicative |
||||
|
Ø 11
|
Ø 30
|
Ø 63
|
||
| Yield Limit, Rp0,2 (MPa) min |
980
|
735
|
635
|
|
| Tensile Strength Rm (MPa) |
min |
1230
|
980
|
830
|
| max |
1520
|
1270
|
1130
|
|
| Elongation A (%) min |
8
|
9
|
10
|
|
| Resilience Kv (J) min |
30
|
32,5
|
35
|
|
| Hardness HB | min |
363
|
295
|
249
|
| max |
432
|
373
|
339
|
|
Matches table 18NiCrMo5
|
Italiy (UNI)
|
Europe (EN)
|
Germany (DIN)
|
France (AFNOR)
|
United Kingdom (BS)
|
USA (AISI/SAE)
|
| 17NiCrMo6-4 |
17NiCrMo6-4
|
–
|
18NCD6
|
815M17
|
4317
|
