Quality 18NiCrMo5
Category Acciai speciali
Standard ref.
UNI 7846
Werkstoff nr. -



Descrizione

It is a steel with good mechanical properties and suitable for case-hardening heat treatments; in fact it is the most renowned and commonly used case-hardening special steels in Italy. It has medium high hardenability and good machinability properties. It can be supplied in rolled bars, peeled bars or drawn bars, in addition to forged bars. 18NiCrMo5 is widely used in the realisation of components subject to wear, such as gears, pinions, axle boxes, camshafts.


Chemical composition 18NiCrMo5 (%)
C
Mn
P
S
Cr
Si
Mo
Ni
min
max
min
max
max
max
min
max
min
max
min
max
min
max
0,15
0,21
0,60
0,90
0,035
0,035
0,70
1,00
0,15
0,40
0,15
0,25
1,20
1,50


Mechanical characteristics 18NiCrMo5
 
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
R
m (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)
18NiCrMo5
17NiCrMo6-4
-
18NCD6
815M17
4317

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