300 & 400 Series Stainless Steel

Hoover offers balls from a variety of 400 series stainless steels including 420, 430, and 440. Type 400 series stainless steel balls are moderately corrosion resistant and can be hardened by heat treating for durability. Type 300 series or austenitic stainless steel balls are offered in 302, 304 and 316. To learn more about our stainless steel products, please see the series types below:
 

302 Stainless Steel

Balls: 302 Stainless Steel

Material

Size Range

Grade

ISO3290 Type 302 Stainless

1/8 - 1” (3.175mm - 25.4mm)

100 - 200

Additional Services:  Special sizes upon request.


ISO3290 type 302 stainless steel balls meet requirements for an unhardened ball with excellent toughness and resistance to corrosion. Corrosion resistance may be increased through annealing. Both non-annealed and annealed balls are widely used in valves and related equipment.

Stainless steel type 302 balls are capable of resisting corrosion by such agents as oxidizing solutions, most organic chemicals, food stuffs and sterilizing solutions.  They are moderately resistant to sulfuric acids. Nonmagnetic properties are available upon request.

Applications include aerosol, sprayers, finger pumps mechanisms, milk machine blenders, food processing equipment and medical applications.

Material Analysis:
All sizes and grades are of the highest quality and in accordance with ISO3290 type 302 Stainless Steel.

Chemical Analysis for Chinese Standard 1Cr18Ni9 302 Stainless Steel:
Carbon..........................................0.15% maximum
Chromium....................................17.0% to 19.0%
Manganese..................................2.0% maximum
Silicon...........................................1.0% maximum
Nickel............................................8.0% to 10.0%
Phosphorus.................................0.035% maximum
Sulphur.........................................0.03% maximum

All international specifications are for geometry only and not for mechanical properties.  
For material certification & mechanical properties please contact your local representative. 

 

316 Stainless Steel

Balls: 316 Stainless Steel

Material

Size Range

Grade

ISO3290 Type 316 Stainless

1/8 - 2” (3.175mm - 50.8mm)

100 - 200

Additional Services:  Special sizes upon request.


ISO3290 type 316 stainless steel balls meet requirements for an unhardened ball with excellent toughness and resistance to corrosion. Corrosion resistance may be increased through annealing. Both non-annealed and annealed balls are widely used in valves and related equipment.

ISO3290 type 316 is an austenitic, chromium-nickel-molybdenum stainless steel and heat resisting steel with corrosion resistance superior to most other chromium-nickel stainless steels in many types of chemical corrodents, as well as, marine atmospheres.

Applications include phosphate industry parts, textile finishing equipment, printing equipment, body jewelry and valve industries.

Material Analysis:
All sizes and grades are of the highest quality and in accordance with ISO3290 type 316 Stainless Steel.

Chemical Analysis for Chinese Standard 06Cr17Ni12Mo2 316 Stainless Steel:
Carbon..........................................0.08% maximum
Chromium....................................16.0% to 18.0%
Manganese..................................2.0% maximum
Silicon...........................................1.0% maximum
Nickel............................................10.0% to 14.0%
Phosphorus.................................0.045% maximum
Sulphur.........................................0.03% maximum

All international specifications are for geometry only and not for mechanical properties.  
For material certification & mechanical properties please contact your local representative. 

 

316L Stainless Steel

Balls: 316L Stainless Steel

Material

Size Range

Grade

AISI Type 316L Stainless

1/8 - 2” (3.175mm - 50.8mm)

100 - 1000

Additional Services:  Special sizes upon request.

AISI type 316L stainless steel balls meet requirements for an unhardened ball with excellent toughness and resistance to corrosion. Corrosion resistance may be increased through annealing. Both non-annealed and annealed balls are widely used in valves and related equipment.

Type 316L is a low carbon austenitic, chromium-nickel-molybdenum stainless steel with general corrosion resistance similar to type 316, but with superior resistance to intergranular corrosion following welding or stress relieving.

It is suggested for use in certain corrosive environments for parts that are fabricated by welding and cannot be subsequently annealed. Parts made from 316L are generally limited to service temperatures up to 800ºF (425ºC).

Material Analysis:
All sizes and grades are of the highest quality and in accordance with AISI type 316L. Passivation to ASTM A380 is available upon request..

Material

AISI

Federal

Military

ASTM

UNS

AMS

Stainless Steel Type 316L

316

QQ-S-763

-

A-493

S-31603

-

Chemical Analysis:
Carbon..........................................0.03% maximum
Chromium....................................16.0% to 18.0%
Manganese..................................2.0% maximum
Silicon...........................................1.0% maximum
Nickel............................................10.0% to 14.0%
Phosphorus.................................0.045% maximum
Sulphur.........................................0.03% maximum

Mechanical Properties:
Hardness as measured on parallel flat surfaces is Rockwell “C” 25-39.
Tensile Strength.........................80,000 to 120,000 psi
Elongation in two inches..........10.0% to 15.0%
Reduction in area.......................55.0% to 65.0%
Modulus of elasticity...................28,000,000 psi
Density..........................................0.29 lbs./cu. in

 

440C Stainless Steel

Balls: 440C Stainless Steel

Material

Size Range

Grade

440CSS

3/32 - 2" (2.381mm - 50.800mm)

100-1000

Additional Services: Special sizes upon request.


ISO3290 type 440C stainless steel balls afford the advantage of maximum hardness combined with corrosion-resisting properties. This hardness, together with precise geometry and fine surface finish, makes them especially useful for bearing and valve applications where severe environmental conditions may occur.

For USA produced 440C and Consumable electrode vacuum meleted (CEVM) and vacuum induction melted/vacuum arc remelted (VIM-MAR) materials; please find availability and specifications under our High Precision Products menu.

Material Analysis:
All sizes and grades are of the highest quality and in accordance with ISO3290 type 440C.

Chemical Analysis for Chinese Standard 102Cr17Mo 440C Stainless Steel:
Carbon.............................0.95% to 1.10%
Chromium.......................16.0% to 18.0%
Manganese.....................0.8% maximum
Silicon..............................0.8% maximum
Molybdenum....................0.4% to 0.7%
Phosphorus....................0.040% maximum
Sulphur............................0.030% maximum
Nickel...............................0% maximum
Copper.............................0% maximum

All international specifications are for geometry only and not for mechanical properties.  
For material certification & mechanical properties please contact your local representative. 

Please note that the material information provided on our website is for informational purposes only. The properties listed per product type are typical and can vary based on suppliers of raw materials and customer specific needs. Please contact customer service for verification prior to ordering. Price and delivery may be subject to change based on specific requirements.

Scroll to Top