AISI M50 TOOL STEEL BALLS

AISI M50 high speed tool steel balls, they provide excellent mechanical properties, hardness and wear resistance at elevated temperatures.
Applications
Special bearings for aircraft uses at elevated temperatures.
Chemical composition
%C
%Si
%Mn
%P
%S
%Cr
%Ni
%Mo
%Cu
%Co
%V
%W
0.80-0.85
0.25 max
0.15-0.35
0.015 max
0.008 max
4.00-4.25
0.15 max
4.00-4.50
0.10 max
0.25 max
0.90-1.10
0.25 max
International standards
ITA
USA
GER
FRA
UK
RUS
CHN
JAP
X80MoCrV4 4
M50 / T11350
1.3551
Y80DCV42 16
BM50
-
Cr4Mo4V
-
Physical / mechanical / thermal / electric / magnetic properties
Property
Symbol
U.o.M.
Type
Notes
Values
Density
δ
[g/cm3]
Physical
Room temp.
7.85
Young's modulus
E
[GPa]
Mechanical
-
210
Specific heat
c
[J/kg-K]
Thermal
Room temp.
460
Coefficient of linear thermal expansion
α
[10^-6/ºC]
Thermal
(ΔT=0-100°C)
11.4
Thermal conductivity
λ
[W/(m·K)]
Thermal
Room temp.
25.0
Electric resistivity
ρ
[Ω*m*10^-9]
Electric
-
600
Relative magnetic permeability
µ
-
Magnetic
Ferromagnetic
> 500
Technical data
Property
Type
U.o.M.
Values
U.o.M.
Values
Hardness
Mechanical
[HRC]
60 - 65
-
-
Ultimate tensile strength
Mechanical
[MPa]
2500 - 2700
[psix10^3]
363 - 391
Service temperature
Thermal
[ºC]
0 / 425
[ºF]
32 / 797
Range
Diameters (min/max)
U.o.M.
Diameters (min/max)
U.o.M.
Precision grades
1.000 - 150.000
[mm]
3/64 - 6
["]
See section International Standards: ISO 3290-1 / DIN 5401 / AFBMA
Corrosion Resistance
Better corrosion resistance than S2 tool steel thanks to the presence of the Chromium in a little percentage.
Revision n.4