Kangda Company has been focusing on the steel ball industry for 20 years. 440C Stainless Steel Ball is our high-quality and durable product with good performance, high hardness, strong anti-rust ability, and is a relatively high-end stainless steel ball. We have rich experience in the production and sales of steel balls, and focus on the research and production of such products. We use the industry's top production and testing equipment,,and strictly control the quality.
440C stainless steel ball belongs to advanced martensitic alloy components, known for its excellent hardness, outstanding wear resistance, and good dimensional stability. Its Rockwell HRC hardness can reach HRC 58-66, providing excellent performance in harsh environments. This type of steel ball is widely used in bearings, valves, actuators, and other high-precision components.
Key technical specifications：
Ingredients: 0.95-1.20% carbon, 16-18% chromium, ≤ 0.75% molybdenum, and containing small amounts of manganese, silicon, phosphorus, and sulfur
Organization: Hardened martensitic stainless steel, fine grain structure, overall quenched and hardened
Hardness: Rockwell HRC 58-66
Tensile strength: up to approximately 285000 psi
Density:~7.75-7.8 g/cm ³
Corrosion resistance: Good tolerance to freshwater, steam, weak acids, food media, and oils
advantage：
The ultra-high hardness of stainless steel balls ensures long-term performance under abrasion and high load conditions.
High wear resistance: maintains accuracy under repeated rolling or contact fatigue conditions.
Good corrosion resistance: suitable for various environments including mild chemical exposure.
Dimensional stability: Maintain accuracy under mechanical and thermal stress.
Mechanical strength: suitable for high load-bearing applications.
440C steel balls are widely used in various precision applications, such as:
Bearings: Rolling contact bearings and micro precision bearings.
Valves and actuators: Key components used for pumps, control valves, and flow regulators.
Mechanical components: locking devices, couplings, and fastening elements.
Industrial machinery: Reliable components in robust and automated systems.
Available grades and sizes:
440C steel balls can be provided in different grades and sizes to meet specific requirements:
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