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Diameters: 0.250mm - 200mm
Chrome steel balls are widely used in high speed ball bearings, as well as, in a number of other industrial applications. Chrome steel balls have excellent surface quality, high hardness and high load bearing capacity, as a result of through hardening.
International Equivalents for chrome steel balls
AISI 52100, EN31, JIS G4805 SUJ2, Wks 1.3505
| Compositions (chrome steel balls) |
| C |
Cr |
Mn |
Si |
P |
S |
| 0.95 - 1.10 % |
1.30 - 1.60 % |
0.25 % Max |
0.15 - 0.35 % |
0.03 % Max |
0.025 % Max |
| Mechanical Properties (chrome steel balls) |
| Tensile Strength |
Yield Strength |
Density |
2240 MPa
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2034 MPa
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7.85g/cm3 |
| Size Range |
0.250mm - 200mm
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| (chrome steel balls) - Data are indicative and can not bind the responsability of Preciball. |
Role of carbon for Chrome balls:
Manufacturing steel balls requires the presence of carbon. This enables, in particular, the formation of cementite and perlite. The more carbon there is in steel balls, the harder they will be. Furthermore, this factor also influences the resistance of the balls to wear.
Role of manganese:
The addition of Manganese mainly helps to increase the chrome steel ball's hardness.
Role of chrome:
Chrome serves, in particular, to increase the ball's hardness and resistance to wear. Chrome is also recognised for its corrosion resistant properties. Steel containing more than 12% of chrome is considered to be stainless steel.
Role of silicon:
Silicon plays an antioxidant role in chrome steel balls. Also, its association with other alloys makes steel even more hard-wearing.
Role of molybdenum for chrome steel balls:
Molybdenum is used in stainless steel up to a density of 8%, but most often in a range from 2 to 4%. Even at a lower rate, molybdenum ensures a powerful effect in improving the alloy's strength.
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