Industrial Catalog

Drilling Recommendations

Drilling Recommendations for Various Materials Recommended Surface Feet per Minute (SFM) and Coolant by Material Application

Ferrous Materials

Materials

Brinell Hardness

Geometry

SFM

Coolant

Low Carbon Steel

85 - 125 125 - 175 175 - 225 Under 200 200 - 300 Over 300 330 - 370 370 - 420 Over 420 120 - 200 Up to 350 300 - 440 300 - 440 300 - 440 300 - 440 120 - 200 200 - 300 325 - 375 400 - 450 175 - 225 200 - 300 125 - 220 200 - 250 250 - 300 300 - 350 125 135 - 185 402 140 - 350 140 - 330 40 - 100 40 - 100 190 - 210 150 - 200 65 - 100 30 - 100 50 - 90 50 - 90 80 - 170 115 - 240 200 - 250 112 - 126

general purpose general purpose

80 - 95 70 - 85 45 - 65 60 - 90 40 - 70 20 - 30 30 - 40 20 - 30 10 - 20 50 - 80 25 - 40 50 - 60 40 - 50 30 - 40 20 - 30 20 - 40 40 - 70

Soluble oil Soluble oil Soluble oil Soluble oil Soluble oil Soluble oil Cutting oil Cutting oil Cutting oil Soluble oil Soluble oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Cutting oil Soluble oil Soluble oil Soluble oil Cutting oil Dry Cutting oil

Medium Carbon Steel High Carbon Steel

heavy duty

general purpose

Steel Alloys

heavy duty

cobalt

Steel Drop Forgings (heat treated)

Grey Cast Iron (soft)

general purpose

140 - 150

Grey Cast Iron (medium) Grey Cast Iron (hard) Titanium Alloys (Ti)-75A

heavy duty heavy duty

cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt cobalt

Ti-150A, RS-120 Ti140A, RC 130B

Ti-6AL-4V

300 Series Stainless 400 Series Stainless

Martensitic 416, 420, F416, Plus K, 400F, 4165SE, 440F

40 - 50

Precipitation Hardening Stainless Steel (cast) Heat Resisting Steels

30 20

10 - 25 10 - 20 10 - 12 15 - 30

Nimonic Alloys

Manganese, 12-14% min

heavy duty

Spring Steels

40 35 30

Drilling Recommendations Armor Plate

Non-Ferrous Materials

Materials

Brinell Hardness

Geometry

SFM

Coolant

Aluminum (pure) Aluminum Alloys Aluminum (leaded)

fast spiral* fast spiral* fast spiral* fast spiral* slow spiral* slow spiral*

130 - 200 150 - 300 200 - 325 200 - 250 200 - 250 140 - 200 120 - 200 140 - 330 140 - 365 25 - 50

Soluble oil Soluble oil Soluble oil Soluble oil

Aluminum Silicon Alloy (die cast)

Brass

Cutting or soluble oil

Bronze

Soluble oil

Copper (nickel & copper tin alloy) Copper (aluminum alloys) Magnesium Alloys (wrought) Magnesium Alloys (cast) Nickel Alloys (wrought & cast)

general purpose* general purpose* general purpose* general purpose* general purpose general purpose general purpose general purpose

Cutting or soluble oil Cutting or soluble oil Cutting or soluble oil Cutting or soluble oil Cutting or soluble oil Cutting or soluble oil Cutting or soluble oil

70 55 12

Nickel Alloys (Monel)

Nickel Alloys (Beryllium nickel)

Zinc Alloy

200 - 250

Soluble oil

*bright only

2