Product Description
In the realm of industrial applications, the demand for materials that can withstand high-impact grinding is ever-growing. Among the plethora of materials available, martensitic hardened steel balls, particularly those made from 440C stainless steel, stand out for their remarkable hardness and wear resistance. But what makes these steel balls the preferred choice for precision devices and high-impact applications? Let's delve into the unique attributes of 440C stainless steel balls and explore their myriad uses.
440C stainless steel is a high-grade martensitic stainless steel known for its exceptional hardness and corrosion resistance. It is widely used in applications where high durability and precision are required. The material is characterized by its high alloy content and fine grain structure, which allows it to be finished to a fine dimensional quality.
- Hardness: 440C stainless steel can harden to a minimum of 58 Rockwell "C" (HRC), making it one of the hardest types of stainless steel available. This hardness is achieved through a heat treatment process, which enhances its ability to resist wear and abrasion.
- Density: The density of 440C stainless steel is approximately 0.277 pounds per cubic inch (7.67 g/cm³), which contributes to its robustness and stability in various applications.
- Magnetic Properties: This material is strongly attracted by magnetic fields, which can be advantageous in certain industrial applications.
- Machinability: In its hardened state, 440C can be ground, honed, and lapped using conventional abrasives. It can also be shaped and drilled using advanced techniques such as electric discharge machining or ultrasonic cavitation.
- Weldability: While welding 440C stainless steel can be challenging due to its high carbon content, it can be resistance welded with difficulty. Soft soldering, silver soldering, or brazing are possible but may affect the material's hardness.
440C stainless steel balls are indispensable in a variety of sectors due to their unique properties. Here are some of the primary applications:
The high hardness and wear resistance of 440C stainless steel make it ideal for use in precision and anti-friction bearings. These bearings are crucial in ensuring smooth rotation and reducing friction in mechanical systems, thereby enhancing performance and longevity.
In industrial environments, valves and conveyor systems are subjected to constant wear and tear. The durability of 440C stainless steel balls ensures that these components can withstand high-impact grinding, leading to improved efficiency and reduced maintenance costs.
The corrosion resistance of 440C stainless steel is particularly beneficial in medical instruments and food processing equipment, where hygiene and material integrity are paramount. The material's ability to resist corrosion from various substances, including blood and foodstuffs, makes it a reliable choice in these sectors.
In oil refineries and quick coupling devices, 440C stainless steel balls are used for their ability to withstand harsh environments and resist corrosion from crude oil, gasoline, and other chemicals. Their high-impact resistance ensures reliability and safety in critical applications.
Understanding the chemical composition of 440C stainless steel is crucial for appreciating its properties:
- Carbon: 0.86 - 1.20%
- Chromium: 16.0 - 18.0%
- Manganese: 1.0% max
- Silicon: 1.0% max
- Molybdenum: 1.0% max
- Sulfur: 0.03% max
- Phosphorus: 0.04% max
This composition contributes to the material's high hardness, corrosion resistance, and mechanical strength, making it suitable for demanding applications.
- High Wear Resistance: Ideal for applications involving high-impact grinding.
- Corrosion Resistance: Suitable for use in environments exposed to corrosive substances.
- Precision: Can be finished to a high dimensional quality, ensuring accuracy in applications.
- Versatility: Used across various industries, including automotive, aerospace, and medical sectors.
Physical Parameters
| Technical Parameters of 304 Stainless Steel Mill Balls |
| Items | Data |
| Tensile Strength | 100,000-180,000 psi |
| Yield Strength | 50,000-150,000 psi |
| Tensibility | 55%-60% |
| Modulus of Elasticity | 29,000,000 psi |
| Chemical Composition Content of 304 Stainless Steel Mill Balls |
| Chemical Element | Percentage of Content (%) |
| Fe | 67.4-70.6 |
| C | 0.1 |
| Si | 1 |
| Mn | 2 |
| P | 0.045 |
Features
1. Anti-erosion and corrosion resistance.
2. No magnetic and demagnetization character, HRC≤26.
3. It applies to grinding of various materials.
4. Good shape of ball with Smooth and gloss surface.
5. Its one of the most Cost- effective ball mill media.
Factory equipment
Exhibition & Partner
Case
Ship to Poland
Ship to France
FAQ
1. What are stainless steel mill balls?
Stainless steel mill balls are spherical components made from stainless steel, used primarily in grinding, milling, and mixing applications. They are known for their durability, corrosion resistance, and ability to withstand high-stress environments.
2. What materials are stainless steel mill balls made from?
Common materials include:
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304 Stainless Steel: General-purpose, corrosion-resistant.
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316 Stainless Steel: Higher corrosion resistance, ideal for harsh environments.
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420 Stainless Steel: Harder and more wear-resistant.
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440C Stainless Steel: High hardness and wear resistance, suitable for heavy-duty applications.
3. What are the primary uses of stainless steel mill balls?
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Grinding and milling media in industries like mining, chemicals, and pharmaceuticals.
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Mixing and dispersing in paint, ink, and food production.
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Precision components in bearings, valves, and pumps.
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Decorative or functional elements in furniture and art.
