Ferrous Steel & Chrome Alloy Balls
Ferrous metal balls represent the foundation of high-load rotational machinery, automotive drivetrains, precision linear guides, and fluid control valves. We manufacture through-hardened chrome bearing alloys (60–66 HRC), corrosion-resistant austenitic stainless steels (SS 304/316), and martensitically hardened 440C stainless steel balls.
Technical Parameters & Compliance
Manufacturing Advantages
- High rolling contact fatigue resistance for high-RPM automotive bearings.
- 100% optical surface inspection to eliminate micro-cracks and soft spots.
- Small batch prototype support (10–50 pcs) for custom decimal diameters (e.g. 4.789mm).
- VCI rust-preventative packaging guaranteed for 24+ months ocean transit.
Available Ferrous Metal Balls
EN-31 Steel Balls
High-carbon chromium alloy steel balls (EN-31 / SAE 52100) manufactured by Rama & Sons in India. Renowned for exceptional hardness and wear resistance, ideal for precision bearings, automotive components, and high-stress industrial applications. Available in various sizes.
AISI-1010 Steel Balls
Low-carbon AISI-1010 steel balls from Rama & Sons, offering good formability and weldability. Suitable for general-purpose applications, toys, and components not requiring high hardness. Cost-effective solution produced in India.
100CR6 Steel Balls
High-carbon chromium 100Cr6 bearing steel balls by Rama & Sons, equivalent to AISI 52100/EN31. Known for superior hardness, wear resistance, and dimensional stability, perfect for high-performance bearings.
SS-300 Series Stainless Steel Balls
Corrosion-resistant austenitic stainless steel balls from Rama & Sons (SS 300 series, including 304 & 316 grades). Widely used in food processing, chemical, medical, and marine industries due to excellent anti-rust properties.
EN-9 Steel Balls
Medium carbon EN-9 steel balls (AISI 1050 equivalent) offering a good balance of strength, hardness, and toughness. Suitable for automotive parts, machinery, and agricultural equipment. Manufactured by Rama & Sons.
SS-400 Series Stainless Steel Balls
Martensitic stainless steel balls (SS 400 series including 410, 420, 440C) from Rama & Sons. Known for high hardness, good wear resistance, and magnetic properties after heat treatment. Ideal for valves and bearings.
AISI-52100 Chrome Steel Balls
High-carbon, chromium-alloy AISI-52100 steel balls (EN31/100Cr6 equivalent) primarily used for precision bearings and demanding applications. Manufactured by Rama & Sons in Agra, India, ensuring top quality.
Need Custom Sizes or Small Test Quantities of Ferrous Metal Balls?
We manufacture prototype test batches (10 to 50 pieces) and custom non-standard decimal diameters (such as 4.789mm) with zero minimum order penalties.