Steel Shot
Steel Shot is manufactured by melting selected scrap in an electric induction furnace. The chemical composition of molten metal is analyzed and strictly controlled by a spectrometer to obtain SAE Standard specifications. The molten metal is atomized and transformed into a round particle and subsequently quenched and tempered in a heat treating process to obtain a product of uniform hardness and microstructure, screened by size according to SAE Standard specification.
Specification
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| Standard Hardness The hardness of 90% of all shot paticles shall be within the range of 40-50 HRc. (Rockwell C) |
| General Appearance The steel shot shall be as nearly spherical as commercially possible and no more 20% of the shot particles shall have objectionable defects. |
| Microstructure The microstructure of steel shot shall be uniform martensite, tempered to a degree consistent with the hardness range,with fine,well distributed carbides, if any. |
| Density The density of steel shot shall be not less than 7.4 g/cc. |
SIZE DISTRIBUTION (as per SAE J 827)
Size
| CODE | SIZE |
| S-780 | 2.5 mm. |
| S-660 | 2.0 mm. |
| S-550 | 1.7 mm. |
| S-460 | 1.4 mm. |
| S-390 | 1.2 mm. |
| S-330 | 1.0 mm. |
| S-280 | 0.8 mm. |
| S-230 | 0.6 mm. |
| S-170 | 0.5 mm. |
| S-110 | 0.3 mm. |
