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Product Category
420/420C Stainless Steel Ball
As a representative of martensitic stainless steels, 420 stainless steel balls combine high hardness, excellent wear resistance, and a certain degree of toughness. After heat treatment (quenching and tempering), they also exhibit outstanding corrosion resistance and polishability. They have good machinability and are ideally suited for manufacturing parts that endure high loads and high wear resistance.
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Detailed introduction
Product description:
Material: 420/420C stainless steel
Diameter: 0.5 mm – 50 mm
Accuracy grades: G10, G16, G40, G100
Hardness: HRC 50-55
Features: As a representative of martensitic stainless steels, 420 stainless steel balls combine high hardness, excellent wear resistance, and a certain degree of toughness. After heat treatment (quenching and tempering), they also exhibit outstanding corrosion resistance and polishability. They have good machinability and are ideally suited for manufacturing components that endure high loads and exhibit superior wear resistance.
Applications: Widely used in industries such as motorcycle parts, pulleys, stainless steel bearings, plastic bearings, handicrafts, valves, and petroleum. For example, in the petroleum sector, it can be used for wear-resistant components in related equipment; in bearing manufacturing, its excellent wear resistance and hardness make it an ideal material choice.
Physical properties:
Hardness: High
Rust resistance: Good
Corrosion resistance: Good
Magnetic: Yes
Chemical composition:
| % |
C |
Yes |
Mn |
P |
S |
Cr |
You |
| Content |
0.15 – 0.40 |
≤1.00 |
≤1.00 |
≤0.040 |
≤0.030 |
12:00 - 14:00 |
≤0.60 |
| Product Name \ Performance |
Size |
Accuracy |
Chemical composition |
Feature |
Application areas |
| 316 stainless steel ball |
Φ1.0mm - Φ38.1mm |
G100 |
C: 0.08% MAX |
Austenitic steel is currently the highest-grade product in the steel ball industry, with an HRC rating below 26. It is ideally suited for industries with high corrosion-resistance requirements and outperforms 304 stainless steel balls in all performance aspects. |
Application areas: The 316 stainless steel ball is a product with relatively high requirements and is typically used in specialized industries such as medical equipment, chemical processing, perfume sprays, atomizers, valves, oilfields, body jewelry, and mobile phone electrodes. |
| 304 stainless steel ball |
Φ1.0mm - Φ38.1mm |
G100 |
C: 0.08% MAX |
A typical representative of austenitic steel, it is generally non-magnetic but becomes magnetic after polishing. It can be demagnetized. With an HRC rating below 26, it exhibits excellent rust and corrosion resistance. |
Application areas: 304 stainless steel balls are the most widely used type of steel ball on the market. They can be applied in medical equipment, chemical industry, plastic hardware, perfume sprays, atomizers, valves, oilfields, motors, switches, electric irons, washing machines, refrigerators, air conditioners, sports equipment, automotive parts, bearings, instruments, and milk containers. |
| 440 stainless steel ball |
Φ0.5mm - Φ100mm |
G10 |
C: 0.95 - 1.20% |
The all-austenitic microstructure belongs to martensitic steel, and its production process has high requirements. The heat treatment process is relatively complex, and the tools used for sharpening have high precision requirements. This is the hardest stainless steel ball among steel balls. |
Application areas: 440C stainless steel balls are commonly used in industries that demand both high precision and excellent corrosion resistance, such as bearings, motors, high-precision instruments, valves, and the petroleum industry. |
| 201 stainless steel ball |
Φ0.8mm - Φ50.8mm |
G100 |
C: 0.15% MAX |
This is a nickel-reduced steel grade, an austenitic steel that is non-magnetic. It features low cost and excellent performance, and is easily machinable, weldable, and drillable. |
Application areas: 201 stainless steel balls are widely used in various hardware industries, handicrafts, and plastic products, such as lighting fixtures, switches, motorcycle accessories, luggage and bags, bearings, and die-cast parts. |
| 420 stainless steel ball |
Φ2.0mm - Φ25.4mm |
G10 |
C: 0.3 - 0.4 |
A representative of martensitic steel, commonly known as "stainless iron," it is magnetic and boasts excellent rust resistance. Its hardness ranges from HRC50 to 55. |
Application areas: 420 stainless steel balls are commonly used in industries that demand both high precision and excellent rust resistance, such as motorcycle parts, pulleys, stainless steel bearings, plastic bearings, crafts, valves, and petroleum. |
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