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Stainless Steel Balls - AISI 302/304

Stainless Steel Balls - AISI 302/304

These Stainless Steel balls go through two processes:
Annealing - where they're heated quickly and allowed to cool slowly.
Passivation - where a light coating of metal oxide is applied.

Both of which help them resist corrosion more effectively.


Because they're resistant to corrosion, these balls are highly suitable for use in the food industry or where oxidising solutions and organic chemicals are present. This, blended with material toughness makes them many companies' first choice for use in a wide range of demanding environments. Note: these balls are not resistant to sulphuric acid.

Use Cases

You'll find them widely used in valves, aerosols and finger pumps (spray, dispenser and trigger sprays) as well as household items like coffee makers and grinders.

International Equivalents

DIN X5 CR Ni 18.09, AFN Z6 CN 18.09, EN58E, JIS SUS 304 Wks 1.4301

C0.15 % Max0.08 % Max
Cr17 - 19 %18 - 20 %
Ni8 - 10 %8 - 10 %
Si1.0 % Max1.0 % Max
Mo1.0 % Max-
Mn2.0 % Max2.0 % Max
P0.045 % Max0.045 % Max
S0.03 % Max0.03 % Max
Size Range
1.588mm (1/16") to 50.80mm (2")
HRc25 - 39
H.B.140 - 160
Mechanical Properties
Tensile Strength100,000 - 180,000 psi
Yield Strength50,000 - 150,000 psi
Density0.286 lbs/cu in
Standard Grades Available

Our Quality Guarantee

Accuracy is our trademark at TN UK. We pride ourselves on our ability to measure and calibrate the products we manufacture. Housing some of the most sophisticated equipment in the world, our annually assessed UKAS lab means we guarantee the precision of the products we supply.

On top of that, we maintain regular and open communication directly with you and any relevant departments to ensure that you get exactly what you need when you need it.

We also offer a recalibrate service for your existing gauges, CMM Reference balls and Master Ball Sets. So you can rest assured that, whether we are supplying a new product or recalibrating an existing one, by meeting our strict standards, your company meets its strict standards (particularly important for other calibration assessed companies).



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