Grinding Media

Balls: Grinding Media

Material

Size Range

Grade

Chrome & Carbon Steel & Stainless Steel

Varoius

1000 & Media Grade


Manufactured especially to meet the highest mechanical and chemical demands of today’s grinding applications. Proper media selection is critical to assure desired results.  Hoover Precision Products’ stocks a wide range of grinding media materials encompassing a size range from 0.1mm and larger.  Whether using a vertical mill or horizontal mill, Hoover can provide the proper media shape, surface finish and density required.

Materials
The selection of raw material from which the size and shape are produced is a function of both the equipment and the formulation.  If the formulation is corrosive, media of a stainless steel material may be appropriate. Since corrosion is always a function of a material and its environment, any application should be checked.  If the formulation can tolerate no carbon contamination, then type 302 or 316 stainless steel is require.  Note that with color sensitive formulations, all steel media will have deleterious effects. 

The following lists the properties of each raw material available from Hoover Precision Products:

Case-Hardened Carbon Steel (Q235B Chinese Steel equivalent to AISI 1018)
Surface hardness...............................................HRC 60min.
Core hardness....................................................HRC 40 (approx.)
The lowest cost cold-forged media available. High strength. High density.  Will cause graying.
Not recommended for applications allowing media to wear down below two thirds of its original diameter.
Not suited to sizes below 3/32 diameter.

Throught-hardened Carbon Steel (65 Chinese Steel equivalent to AISI 1065)
Surface hardness...............................................HRC 60min.
Core hardness....................................................HRC 50min.
Especially suited to ball mills or in equipment where the media will be kept in use well below the original diameter.  High strength.  High density.  Will cause graying.

Through-hardened Chrome Steel (GCR15 Chinese Steel equivalent to AISI 52100)
Hardness.............................................................HRC 60 - 67
Particularly suited to high speed media mills but applicable to all grinding equipment.
High strength. High density. Will cause graying.

Through-hardened Stainless Steel (9Cr18Mo Chinese Steel equivalent to AISI 440CSS)
Hardness.............................................................HRC 58 - 65
Corrosion resistant in many applications. High strength. High density.

Work-hardened Stainless Steel (0Cr17Ni12Mo2 Chinese Steel equivalent to AISI 316)
Hardness.............................................................HRC 25 - 39
Highly corrosion resistant but wears quickly.
Type 316 is generally needed when chlorides are present in the formulation. High strength. High density.

Work-hardened Stainless Steel (1Cr18Ni9  & 0Cr18Ni9 Chinese Steel equivalent to AISI 302SS and 304SS)

 

 

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.

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