Stainless Steel Balls

Hartford Technologies supplies all 5 major stainless steel grades plus our own corrosion-resistant CorrTech Steel for demanding applications in aerospace, medical, food processing, and industrial automation. With over 80 years of precision manufacturing, we stock sizes from 1.5mm to 50.8mm in grades 10 through 1000. Balls available to cleanroom Class 10,000 standard.

6 grades available Sizes 1.5mm to 50.8mm Grades 10 to 1000 In-stock and custom. Cleanroom standard 10,000 available.

Type of Stainless Steel Balls We Manufacture

Compare Stainless Steel Ball Types

Grade	Corrosion resistance	Hardness (Rockwell)	Magnetic	Food / medical safe	Size range	Grades available
AISI 304 (18-8) / 302	Excellent	B 75-95 annealed C 25-39 not annealed	Low	Yes	1.5mm to 50.8mm	Grade 50 to 1000
AISI 316	Best	B 75-95 annealed C 25-39 not annealed	Very Low	Yes (FDA Applications)	1.5mm to 50.8mm	Grade 50 to 1000
AISI 420	Good	C 48-52	Yes	No	1.5mm to 50.8mm	Grade 25 to 1000
AISI 430	Good	B 75-95 annealed	Yes	No	1.5mm to 50.8mm	Grade 100 to 1000
AISI 440C	Good	C 58-62	Yes	No	1mm to 50.8mm	Grade 10 to 1000
CorrTech	Very Good	C 58-62	Yes	No	1mm to 50.8mm	Grade 10 to 1000

Sizes, Grades and Tolerances

Material	Smallest Standard Size	Smallest Standard Size	Largest Standard Size	Largest Standard Size	Best Standard Grade	Least Standard Grade
Stainless Steels
302/304	1.5mm	1/16″	50.8mm	2″	50	1000
316	1.5mm	1/16″	50.8mm	2″	50	1000
420	1.5mm	1/16″	50.8mm	2″	25	1000
430	1.5mm	1/16″	50.8mm	2″	100	1000
440c	1mm	1/32″	50.8mm	2″	10	1000
CorrTech Steel	1mm	1/32″	50.8mm	2″	10	1000

View Full Tolerance Chart

Why Choose Hartford Technologies for Stainless Steel Balls

100+ years of precision supply

Trusted by OEMs in Aerospace, Medical, Automotive, and Industrial markets since 1945
In-stock and ready to ship

Standard sizes available for immediate shipment. $400 minimum order for stock items.
Custom Engineered Solutions

Complex assemblies and non-standard sizes are quoted individually.

Industries We Serve with Stainless Steel Balls

Hartford Technologies stainless steel balls are specified across a wide range of industries and applications. Grade notes indicate which grades are most commonly used in each context.

Medical and Surgical

Valves, bearings, sterilizing equipment, medical devices, blood-contact components
- 316
- 304/302
- 420
Food and Beverage

Processing equipment, valves, pumps, filling lines, dairy equipment
- 316
- 304/302
- 430
Health and Beauty

Nail polish mixing beads, roll-on applications, dispensing equipment, aerosol agitation
- 430
- 316
- 304/302
Industrial and Manufacturing

Antifriction bearings, couplings, grinding media, conveyors, casters, industrial equipment
- 440C
- CorrTech
- 420
- 430
Chemical Processing

Photographic chemicals, inks, textile bleaches, dye stuffs, sulphuric and phosphoric acid equipment
- 316
- CorrTech
Pumps and Valves

Check valves, pump seats, actuators, quick-disconnect couplings, plug balls
- 304/302
- 440C
- CorrTech
- 316
Precision Bearings

Rolling element bearings, antifriction bearings, high-load bearing applications requiring max hardness
- 440C
- CorrTech
- 420
Agricultural Equipment

Industrial and agricultural machinery, high-temperature resistance applications
- 430
- 420
Petroleum and Energy

Petroleum products, organic materials, steam environments, high-temperature equipment
- 430
- 420
- 316
Textile and Printing

Rayon, rubber, textile bleaches, dye stuffs, photographic and ink processing equipment
- 316

Lead Times and Minimum Order Value

Standard in-stock components are available for immediate shipment. Lead times for non-stock and custom orders are determined based on specific part size, material, and required quantity.
Hartford Technologies specializes in high-volume production runs and industrial applications. We have a $400 minimum order value for all standard in-stock bearing balls. For custom-engineered parts and assemblies, the minimum is determined by the complexity and volume of the specific requirement.