Double Tempered Cast Steel Shot

SEPPE Double Tempered Cast Steel Shot is a high-toughness steel shot produced with additional tempering treatment after casting and quenching. Compared with ordinary cast steel shot, it has better fatigue resistance, lower breakage rate and longer recycling life, making it suitable for stable continuous blasting and precision cleaning.

General Information

Product Positioning

• A long-life steel shot for customers who care more about low breakage, low dust and stable surface finish than maximum cutting force.

• Moderate hardness helps protect workpieces while maintaining efficient cleaning performance.

• Suitable for repeated recycling in enclosed shot blasting equipment.

Key Advantages

• Ultra high toughness: Double tempering helps release internal stress and improve fatigue resistance.

• Low dust: Reduced breakage helps lower dust generation and abrasive consumption.

• Workpiece protection: Moderate hardness helps reduce dents on thin plates and precision parts.

• Stable surface: Supports fine and uniform roughness for coating adhesion and matte finishing.

Typical Specification

Main Application Scenarios

Automotive Components ▸ Used for gears, springs, chassis parts and stamping parts in automotive production. ▸ Double tempering supports lower breakage and more stable peening performance. ▸ Suitable for repeated recycling where low dust and consistent surface results are required.

Thin Plate Cleaning ▸ Used for thin steel sheets and lighter metal panels where lower impact damage is required. ▸ Moderate hardness helps reduce dents while maintaining efficient surface cleaning. ▸ Suitable for preparation before painting, coating or assembly.

Precision Castings ▸ Used for precision castings, small cast parts, valve bodies and mechanical components. ▸ Removes sand, oxide and light burrs while supporting uniform surface control. ▸ Lower breakage helps reduce dust and protects delicate casting details.

High-end Coating Pre-treatment ▸ Creates a fine and stable matte surface before painting, powder coating or finishing. ▸ Useful for customers who value surface consistency and lower abrasive consumption. ▸ Suitable for continuous blasting lines with strict dust and surface quality control.

Selection Notes

• Use fine sizes for thin plates and precision parts.

• Use S280-S390 for general continuous blasting and steel structures.

• Select this grade when lower consumption and dust control are more important than strong cutting speed.

Production & Quality Focus

• Selected steel raw material - induction furnace melting - atomization - drying - screening - heat treatment - final screening - packaging.

Raw material management    Induction furnace operation    Heat treatment line    Screening & packaging line

Packaging & Delivery

• Common packaging includes 25 kg bags, 1000 kg jumbo bags, palletized bags and customized export packaging. Bag marks and pallet protection can be arranged according to purchase requirements.

• Palletized small bags are available for easier forklift handling, warehouse stacking and container loading.

• Loading photos, batch labels and inspection records are available to support shipment traceability.

FAQ

?How is double tempered shot different from double quenched shot?

• Double tempered shot focuses on toughness, low breakage and longer life. Double quenched shot focuses on higher hardness and stronger cleaning force.

?Is it suitable for shot peening?

• Yes. Its toughness and stable roundness make it suitable for automotive and mechanical shot peening applications.

?Why choose double tempered shot over ordinary shot?

• It can reduce dust, breakage and abrasive consumption in repeated recycling systems.

?Will it reduce machine wear?

• Lower breakage and less fine powder can help reduce wear on blast wheels, liners and dust collection systems.

?Which customers usually choose this grade?

• Customers running continuous blasting lines, automotive parts, sheet metal and precision workpieces often prefer this grade.