Opta Waive
Opta Minerals Blast Cleaning Abrasives

Chilled Iron Grit

Chilled Iron Grit is produced from carefully selected alloy-free iron scrap that is re-carbonized in a hot blast furnace. The shot obtained by this process is then crushed into grit.

Chilled Iron Grit is a white iron structure that shatters on impact, rather than wearing round. The fresh edges exposed by this process combined with a high degree of hardness result in a faster cutting/cleaning action.

Chilled Iron Grit is used in blast rooms with abrasive reclaim systems and in portable pressure blast equipment.

Chilled Iron Grit - Photo

Advantages of Chilled Iron Grit

  • Wide range of grades available
  • Consistent  profile – tight-screen analysis of all sizes guarantees an even and consistent finish, reducing priming and painting costs
  • High cleaning speed – breaks down into more angular particles, resulting in a fast cut/clean
  • Easily recyclable
  • Economical alternative to steel grit abrasives

Available Sizes and Grades:

Mesh No. Screen Size G14 G18 G25 G40 G50 G80
7 2.80            
8 2.36            
10 2.00 All Pass          
12 1.70            
14 1.40 80% min All Pass        
16 1.18 90% min   All Pass      
18 1.00   75% min   All Pass    
20 0.850            
25 0.710   85% min 79% min   All Pass  
30 0.600            
35 0.500            
40 0.425     80% min 70% min   All Pass
45 0.355            
50 0.300       80% min 65% min  
80 0.125         75% min 65% min
120 0.125           75% min
200 0.1075            

Technical Specifications

Symbol Name Percentage
C (Carbon) 2.20 – 3.60%
Mn (Manganese) < 0.50%
Si (Silicon) < 2.20%
S (Sulphur) < 0.20%
P (Phosphorus) < 0.25%

Characteristics

Colour: Grey
Bulk Density: 7.0 g/cm3
Specific Gravity: 3.8
Grain Shape: Angular
Solubility: Insoluble
Hardness: 60-67 HRC (see our hardness index)

Packaging:

  • 55 lb. bags, 40 bags (2,200 lb.) in a Super Sack
  • 2200 lb. Super Sacs
  • 1800 lb. steel drums

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