- length: 60mm
- is_customized: Yes
- Use: Metal Drilling
- Material: Cobalt Steel Alloys
- Model Number: HSS Co
- DIY Supplies: Metalworking
- Type: Twist Drill Bit
- Brand Name: BB
- Origin: Mainland China
- Certification: NONE
- Drill point angle: 120 135
- Coating: TiN
- Tolerance: H8
- Standard: DIN388
M35 HSS-Co
High-Speed steel with cobalt gives more heat and wear resistance.
High-Speed steel are basic and inexpensive.Also can be re-sharpen.
-M35（W6Mo5Cr4V2Co5） HRC63～65.
-Geometry: drill point angle:120
-For used on carbon steel, cast iron
HSS-EX with TiN
TIN coating: Titanium nitride.Great basic coating,
-Geometry: drill point angle135°, suit for drilling harder material.
–For used on hardened steel, stainless steel
Application of BB Co&EX drill
For used on steel, copper, aluminum, brass, oak, maple, MDF, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.
Tips:
-We recommend working with materials whose hardness is less than 38Rc.
-Make sure the environment is stable.
-！Attention should be paid to cooling when processing certain materials.
About drilling stainless steel.
-Make sure the drill bit is perpendicular to the stainless steel plate;
-If you need to drill holes larger than 6mm, use a drill bit of 3~4mm to drill small holes first;
-The drill bit should not be too long;
-Low speed. (Prevent stainless steel annealing)
13PCS: 1.5 2.0 2.5 3.0 3.2 3.5 4.0 4.5 4.8 5.0 5.5 6.0 6.5
19PCS: 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
25PCS: 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0
Material
①M2 High-Speed steel with black oxide.
②M35 High-Speed steel with cobalt.
③M42 HSS-Co8
④Solid Carbide
Coating:TiALN,TiSiN,AlTiSiN
Higher performing ,higher temperature,Good for steels and stainless steels.
-For CNC
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