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420/420C stainless steel ball
As a representative of martensitic stainless steels, 420 stainless steel balls exhibit high hardness, excellent wear resistance, and moderate toughness. After heat treatment (quenching and tempering), they also achieve superior corrosion resistance and polishability. With favorable machinability, they are well suited for manufacturing components that endure heavy loads and require outstanding 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
Characteristics: As a representative of martensitic stainless steels, 420 stainless steel balls combine high hardness, excellent wear resistance, and moderate toughness. After heat treatment (quenching and tempering), they also exhibit superior corrosion resistance and polishability. They offer good machinability and are well suited for manufacturing components that endure heavy loads and require high wear resistance.
Applications: Widely used in motorcycle components, pulleys, stainless steel bearings, plastic bearings, handicrafts, valves, the petroleum industry, and more. For example, in the petroleum sector, it can be employed for wear‑resistant parts 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 |
Ni |
|
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 |
Characteristics |
Application areas |
|
316 stainless steel ball |
Φ1.0mm - Φ38.1mm |
G100 |
C: 0.08% MAX |
Austenitic steel is currently the highest‑grade material in the steel ball industry, with a hardness of HRC < 26. It is ideally suited for applications with stringent corrosion‑resistance requirements, and its overall performance surpasses that of 304 stainless steel balls. |
Application areas: The 316 stainless steel ball is a high‑performance product, typically used in specialized industries such as medical equipment, chemical processing, perfume sprayers, atomizers, valves, oilfield applications, 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 a hardness of less than HRC 26, it exhibits excellent rust‑proof and corrosion‑resistant properties. |
Application areas: 304 stainless steel balls are the most widely used type of steel ball on the market, suitable for medical equipment, chemical processing, plastic and hardware applications, perfume sprays, atomizers, valves, oilfield equipment, electric motors, switches, electric irons, washing machines, refrigerators, air conditioners, various instruments, automotive components, bearings, precision instruments, and milk‑boiling vessels. |
|
440 stainless steel ball |
Φ0.5mm - Φ100mm |
G10 |
C: 0.95 - 1.20% |
The all‑martensitic microstructure belongs to martensitic steel, which demands stringent manufacturing processes and a relatively complex heat‑treatment regimen. It is used for cutting tools and requires high precision, making it the hardest stainless‑steel ball among all 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, electric motors, high-precision instruments, valves, and the petroleum sector. |
|
201 stainless steel ball |
Φ0.8mm - Φ50.8mm |
G100 |
C: 0.15% MAX |
It belongs to the nickel‑saving steel family, is an austenitic stainless steel, and is non-magnetic. It offers low cost and excellent performance, and can be machined, welded, and drilled. |
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, bearings, and die-cast components. |
|
420 stainless steel ball |
Φ2.0mm - Φ25.4mm |
G10 |
C: 0.3 - 0.4 |
A representative of martensitic steels, commonly known as stainless iron, it is magnetic and offers good corrosion resistance, with a high hardness of HRC 50–55. |
Application areas: 420 stainless steel balls are commonly used in industries that demand both high precision and excellent corrosion resistance, such as motorcycle components, pulleys, stainless steel bearings, plastic bearings, handicrafts, valves, and the petroleum industry. |
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