Quality40NiCrMo7
CategorySpecial Steels, Quenched and Tempered Steels
Standard ref.
UNI 7845
Werkstoff nr.1.6565

Description

40NiCrMo7 is widely used in European marketplace such as those American. It stands out for great hardenabilty and excellent fatigue strenght. It is usually supplied in hot rolled or forged and turned bars. Thanks to its hardenability, it is frequently used to produce large-scale components subject to harsh conditions, such as axles for hydroelectric turbines. It is employed also to realize highest resistance bolts and nuts.

Chemical composition 40NiCrMo7 (%)

C
Mn
P
S
Cr
Si
Mo
Ni
minmaxminmaxmaxmaxminmaxminmaxminmaxminmax
0,370,440,500,800,0350,0350,600,900,150,400,200,301,601,90

Mechanical characteristics 40NiCrMo7

Hot rolled normalized
of the specimen in mm)
≤ 16> 16 ≤ 40> 40 ≤ 100> 100 ≤ 160> 160 ≤ 250
Yield Limit, Reh(MPa) min835785735665635
Tensile Strength
R
m (MPa)
min1030980930850780
max1230118011301030980
Elongation A (%) min1111121313
Resilience Kv (J) min3030303030
Hardness HBmin
max

Matches table 40NiCrMo7

Italiy (UNI)
Europe (EN)
Germany (DIN)
France (AFNOR)
United Kingdom (BS)
USA (AISI/SAE)
40NiCrMo740NiCrMo740NiCrMo8-4817M404340