AISI 440C STAINLESS STEEL BALLS
Size: 22.225mm
Grade: G5 to G1000
Martensitic stainless steel balls, they are characterized by remarkable hardness, wear resistance, surface finishing, narrow dimensional tolerances. For that reason this type of steel is frequently used in precision devices. Balls are provided in the passivated state.
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Applications |
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Precision bearings, anti-friction bearings, special valves, conveyor belts and rollers, ballpoint pens. They are used in foodstuff, medical instruments, quick couplings, recirculating ball bearings, knotting devices, oil refinery devices. Chemical composition (%)
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International standards
|
ITA |
USA |
GER |
FRA |
UK |
RUS |
CHN |
JAP |
|
X 105CrMo17 |
440C |
1.4125 |
Z100CD17 |
- |
95X18 |
9Cr18Mo |
SUS440C |
Physical / mechanical / thermal / electric / magnetic properties
|
Property |
Symbol |
U.o.M. |
Type |
Notes |
Values |
|
Density |
δ |
[g/cm3] |
Physical |
Room temp. |
7.75 |
|
Young's modulus |
E |
[GPa] |
Mechanical |
- |
210 |
|
Specific heat |
c |
[J/kg-K] |
Thermal |
Room temp. |
450 |
|
Coefficient of linear thermal expansion |
α |
[10^-6/ºC] |
Thermal |
(ΔT=0-100°C) |
10.2 |
|
Thermal conductivity |
λ |
[W/(m·K)] |
Thermal |
Room temp. |
19.6 |
|
Electric resistivity |
ρ |
[Ω*m*10^-9] |
Electric |
- |
680 |
|
Relative magnetic permeability |
µ |
- |
Magnetic |
Ferromagnetic |
> 700 |
Technical characteristics of balls
|
Property |
Type |
U.o.M. |
Values |
U.o.M. |
Values |
|
Hardness |
Mechanical |
[HRC] |
58 - 65 |
- |
- |
|
Ultimate tensile strength |
Mechanical |
[MPa] |
1900 - 2000 |
[psix10^3] |
275 - 290 |
|
Service temperature |
Thermal |
[ºC] |
0 - 400 |
[ºF] |
32 - 752 |
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