Quality39NiCrMo3
CategorySpecial steel,
quenched and tempered steel
Standard ref.
EN 10083
Werkstoff nr.1.6510
Description

It is the most used and well-known in Italy among special steels aimed at quenching and tempering. It is characterized by toughness, excellent deformability, besides good hardenability. It is generally supplied in hot rolled or forged and turned bars. It is employed to realize components subject to dynamic stress like axles, shafts and gears.

Chemical composition 39NiCrMo3 (%)
C
Mn
P
S
Cr
Si
Mo
Ni
min
max
min
max
max
max
min
max
max
min
max
min
max
0,35
0,43
0,50
0,80
0,025
0,035
0,60
1,00
0,40
0,15
0,25
0,70
1,00

Mechanical characteristics 39NiCrMo3

Hot rolled normalized
of the specimen in mm)
≤ 16
> 16 ≤ 40
> 40 ≤ 100
> 100 ≤ 160
> 160 ≤ 250
Yield Limit, Rp0,2 (MPa) min
785
735
685
635
540
Tensile Strength
R
m (MPa)
min
980
930
880
830
740
max
1180
1130
1080
980
880
Elongation A (%) min
11
11
12
12
13
Resilience Kv (J) min
35
40
40
40
Hardness HBmin
max

Matches table

Italiy (UNI)
Europe (EN)
Germany (DIN)
France (AFNOR)
United Kingdom (BS)
USA (AISI/SAE)
39NiCrMo339NiCrMo336CrNiMo440NCD39840