Counterboring Tools
Counterboring tools and drilling inserts are designed for creating precise and accurate holes of any diameter. The STS toolholders are available in Whistle Notch™ and Weldon™ shanks and are great for steel, stainless steel, cast iron, non-ferrous materials, high-temp alloys, and hardened materials. CTR™ counterboring tools are designed for high-production screw-head counterbores and similar counterboring operations. They have unequal insert positioning and flutes. Kennametal’s CTR double-sided drilling inserts are known for their high performance and durability.
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- Steel (88)
- Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(88)
- Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(88)
- Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(88)
- Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(88)
- Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(88)
- Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(88)
- High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(88)
- Stainless Steel (88)
- Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(88)
- High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(88)
- Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(88)
- Cast Iron (110)
- Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(110)
- Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(110)
- High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(110)
- Non-Ferrous Materials (60)
- Wrought Aluminum (60)
- Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(60)
- High-Silicon Aluminum Alloys Si >12.2%(60)
- Copper, Brass, Zinc-based on machinability index range of 70-100 (60)
- Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (60)
- Carbon, Graphite Composites, CFRP (60)
- MMC's (60)
- High-Temp Alloys (87)
- Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(87)
- Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(87)
- Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(87)
- Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(87)
- Hardened Materials (51)
- Hardened Materials 44-48 HRC(51)
- Hardened Materials 48-55 HRC(51)
- Hardened Materials 56-60 HRC(51)
- Hardened Materials >60 HRC(51)
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