Bordo Cobalt Step Tip Drill And Accessory Set
Available
Bordo HSS-Co cobalt drill bits drill stainless steel, high-tensile alloys, and hard materials where standard HSS would dull rapidly. The 2012-S1 Cobalt Step Tip Drill And Accessory Set is part of Bordo's comprehensive Australian cutting tool range — trusted by engineers, tradespeople, and machinists across industry and manufacturing.
Where this product is used
HSS-Co (cobalt) drill bits contain 5–8% cobalt alloyed into the steel — they resist the heat generated when drilling stainless steel and high-tensile alloys.
- Drilling hard and work-hardening steels including stainless steel and high-tensile alloys
- Aerospace, food processing, and marine fabrication drilling
- Engineering production where drill bit life on difficult materials is critical
Key specifications
| Material | HSS-Co (Cobalt) |
Selecting the right option
HSS-Co (cobalt) drills run at lower speeds than standard HSS — cutting speed should be reduced by 25–30% on stainless steel to prevent work hardening. Jobber length is the standard for most applications; short (stub) series suits rigid setups where deflection is a concern.
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