cobolt
Cobalt Drill Bits Ideal for drilling into hardened steel.
you'll want to heat the metal first on hardened steel...then proceed to the drill press with a good quality bit. no made in china or other cheap bits....a good bit will run aprox 8.00 each ....by tyler beyers abc seamless fargo,nd
You use a standard HSS bit for mild steel.
One would employ a tool with a diamond drill-bit to a material that was extra hard, such as a diamond or hardened steel beam.
A tungsten coated drill bit.
No, it takes a special drill bit with a hardened tip.
with a drill bit
Stainless Steel.
Yes, there is. You use a tungsten or cobalt coated drill bit for this.
A titanium or cobalt drill bit.
A 'unibit is a 'stepped steel drill bit that can drill any size of hole in softer materials.