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Alpha

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ALPHA

Is RUST FREE, ALPHA Stainless Steel Shot is made to 304LStainless Steel specification.

Has a very SPHERICAL morphology, it work-hardens to +- 45HRc in operation, leaving an aesthetically pleasing surface finish.

It has a HIGH DURABILITY and results in a cost effective blasting operation.

The MAIN APPLICATIONS are the Cleaning, De-burring, Surface Preparation and Finishing of:

  • Aluminium Castings, Forgings and Extrusions.
  • Natural Stone and Concrete - Surface Texturing.
  • Shot Blasting of Non-Ferrous Metals and Alloys.
  • Zinc Pressure Die Castings.
  • Stainless Steel Castings and Forgings.
  • Stainless Steel Structures

Product Specification Sheet

Stainless Steel Shot - Sigma Alpha α

Sigma ALPHA is specifically manufactured to obtain a highly spherical Stainless Steel Shot. The product is a cost effective alternative to other Stainless Steel blasting medias but does not compromise on quality.
The unique production process allows not only the manufacture of standard size ranges but also allows the manufacture of special request size ranges.

Chemical Composition
Min % Max %
Carbon 0.05 0.25%
Chrome 15.5% 20 %
Nickle 6.00 8.5%
Silicon 1.80 2.5%
Manganese 0.70 1.40%
Hardness
As Cast +- 20 HRc (300 HV)
After Work Hardening (In Service) +- 45 HRc (450 HV)
Microstructure
Austenitic
Sieve Sizes GRADES
Sieve No. mm α 140 α 120 α 100 α 90 α 60 α 50 α 40 α 30 α 20 α 10
4.00 all Pass
3.35 10% max
7 2.80 all Pass
8 2.36 10% max
12 1.70 90% Min 10% max all Pass
14 1.40 10% max all Pass
16 1.18 90% Min 10% max all Pass
18 1.00 90% Min 10% max all Pass
20 0.850 90% Min 10% max
25 0.710 90% Min
30 0.600 90% Min all Pass
40 0.425 90% Min 10% max all Pass
50 0.300 10% max
60 0.250 all Pass
80 0.180 90% Min 10% max
0.075 90% Min
0.040 90% Min

Sigma Alpha CrNI Stainless Steel Shot

  • No Ferrous Contamination
  • Rust Free Blasting
  • High Durability
  • Highly spherical
  • Allows control of surface profile
  • Cost effective alternative to other products
  • Significant reduction in stock and logistics
  • High reduction in waste material disposal costs
  • Various Packaging options available