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SS-300 Series Stainless Steel Balls - Ferrous Balls by Rama & Sons
ISO 3290 Compliant
Hardness25 – 39 HRC (Annealed or Work Hardened)
Sphericity GradeISO 3290 Grade 25
Diameter RangeØ 0.80mm to Ø 100.00mm
CertificatesEN 10204 3.1 Traceable
Ferrous Balls

SS-300 Series Stainless Steel Balls

Alloy Reference: Austenitic Stainless Steel Balls, SS304 Balls (UNS S30400, 1.4301), SS316 Balls (UNS S31600, 1.4401), SS302 Balls, SS303 Balls, Corrosion Resistant Steel Balls, Non-Magnetic Steel Balls, Food Grade 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.

Small Batch & Custom Diameters SupportedNeed 10 to 50 prototype pieces or a non-standard size (like 4.789mm)? We produce custom decimal grinds with no minimum order penalty.

Austenitic Stainless Steel (AISI 316 / 316L / 304)

Chromium (Cr)16.0 – 18.0%
Nickel (Ni)10.0 – 14.0%
Molybdenum (Mo)2.0 – 3.0%
Carbon (C)≤ 0.03% (316L)
Manganese (Mn)≤ 2.00%
Silicon (Si)≤ 1.00%

All raw material melt batches are verified by optical emission spectrometry.

Technical Overview & Engineering Standards: 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. As an established precision manufacturer, Rama & Sons delivers ferrous balls that meet strict international ISO 3290 and DIN 5401 standards for roundness, hardness, and surface finish.

Key Engineering Advantages

  • Precision lapped for tight sphericity and dimensional accuracy.
  • High resistance to wear, fatigue, and heavy rolling contact.
  • 100% optical sorting and Rockwell hardness inspection.
  • Available in custom decimal diameters with no MOQ penalty.

Manufacturing Quality Control

Every batch of SS-300 Series Stainless Steel Balls is produced under ISO 9001:2015 certified quality processes. Testing includes chemical spectrometry, laser roundness measurement, and eddy-current flaw detection, ensuring zero field defects for critical OEM assemblies.

Need Material Testing Reports or Custom Samples?

We provide EN 10204 3.1 inspection reports and dispatch pre-production qualification samples within 3 to 5 business days.

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Frequently Asked Questions: SS-300 Series Stainless Steel Balls

Industries That Use SS-300 Series Stainless Steel Balls

Engineered to meet the exact tolerances and durability requirements of mission-critical global sectors.

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