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440C stainless steel ball
440C steel balls are spherical components manufactured from high-carbon, high-chromium martensitic stainless steel. Their distinctive characteristics stem entirely from the intrinsic properties of 440C steel, while their spherical geometry—suited to applications such as bearings, grinding, and precision transmission—further enhances three key advantages: hardness, wear resistance, and corrosion resistance.
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Detailed Introduction
Product Description:
Material: 440C stainless steel
Diameter: 0.5 mm–100 mm
Accuracy grades: G5, G10, G16, G20, G28, G40, G100;
Hardness: HRC 55–58
Features: 440C steel balls are spherical components manufactured from high‑carbon, high‑chromium martensitic stainless steel. Their distinctive characteristics stem entirely from the intrinsic properties of 440C steel, while their spherical geometry—well suited to applications such as bearings, grinding, and precision transmission—further enhances three key advantages: hardness, wear resistance, and corrosion resistance.
Applications: 440C steel balls are primarily used in environments with moderate to low corrosion, at medium temperatures, and where high hardness, wear resistance, operational precision, and long service life are required—such as in precision bearings (for electric motors, machine tools, and automobiles), small-scale fine grinding equipment, precision valve spools, and drive components for medical devices.
Physical properties:
Hardness: High
Rust resistance: Good
Corrosion resistance: Good
Wear resistance: Good
Chemical composition:
|
% |
C |
Yes |
Mn |
P |
S |
Cr |
Mo |
|
Content |
0.95 - 1.20 |
≤1.00 |
≤1.00 |
≤0.040 |
≤0.030 |
16:00 - 18:00 |
0.40 - 0.60 |
Production and processing
Packaging and shipping
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