SAE Specifications for Cast Steel Grit

SAE Size No.Screen No.SAE J444 Shot TolerancesScreen Opening - InScreen Opening - MM 
G10 7 0% Max 0.1110 2.80
10 80% Min 0.0787 2.00
12 90% Min 0.0661 1.70
G12 8 0% Max 0.0937 2.36
12 80% Min 0.0661 1.70
14 90% Min 0.0555 1.40
G14 10 0% Max 0.0787 2.00
14 80% Min 0.0555 1.40
16 90% Min 0.0469 1.18
G16 12 0% Max 0.0661 1.70
16 75% Min 0.0469 1.18
18 85% Min 0.0394 1.00
G18 14 0% Max 0.0555 1.40
18 75% Min 0.0394 1.00
25 85% Min 0.0278 0.710
G25 16 0% Max 0.0469 1.18
25 70% Min 0.0278 0.71
40 80% Min 0.0165 0.425
G40 18 0% Max 0.0394 1.00
40 70% Min 0.0165 0.425
50 80% Min 0.0117 0.300
G50 25 0% Max 0.0278 0.710
50 65% Min 0.0117 0.300
80 75% Min 0.0070 0.180
G80 40 0% Max 0.0165 0.425
80 65% Min 0.0070 0.180
120 75% Min 0.0049 0.125
G120 50 0% Max 0.0117 0.300
120 60% Min 0.0049 0.125
200 70% Min 0.0029 0.075

Ervin AMASTEEL Standard Hardness = S (40-51 Hardness Rockwell C)

Special hardnesses:

  • M (47 – 56 Hardness Rockwell C)
  • L (54 - 61 Hardness Rockwell C)
  • H (Minimum 60 Hardness Rockwell C)
ElementSpecification
Carbon .80 - 1.2%
Manganese .60 - 1.2%
Silicon .40% Min
Sulfur .05% Max
Phosphorus .05% Max
ElementSpecification
Internal Defects 15% Max
Cracks 15% Max
Voids 10% Max
Shrinkage 10% Max
Density 7 gm/cc
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Ervin Industries
3893 Research Park Dr
Ann Arbor, MI 48108
734-769-4600