Tel: 860-571-3602  |
Tel: 860-571-3602  |

Stainless Steel Balls: AISI 420

AISI 420 stainless steel balls

AISI 420 Stainless Steel Balls Specifications

Carbon Chromium Manganese  Phosphorus Sulfur Silicon
0.15% 12% – 14% 1.00% 0.04% 0.03% 1.0%

View Sizes, Grades, and Tolerance


AISI 420 stainless steel balls demonstrate good wear characteristics and hardness. Slightly less hardness and greater corrosion resistance, when compared to 440C.

Corrosion Resistance

Stainless steel balls have excellent resistance to corrosion from mild atmospheres, fresh water, steam, blood, ammonia, petroleum products, and mild acidic environments.


Rockwell C 48-52 measured on parallel flats.

Ball Sizes

Available in sizes from 1.5mm to 50.8mm in grades 25 through 1000.
Hartford Technologies is a multinational supplier of 420 stainless steel balls for applications including grinding media and industrial equipment.

Hartford Technologies design engineers are among the most knowledgeable in the industry, and our ability to manufacture on both sides of the globe gives Hartford customers a substantial advantage in cost and flexibility. We produce more than one billion balls per year for high volume OEM applications and can provide fast turn-around to meet stringent delivery requirements.

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