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  • Machining
    Guidelines
    • Machining Beryllium Copper
      (pdf format)

Rod, Bar & Tube Machining Guidelines

For Berylco Alloys


Material Turning Drilling

End Milling (0.500" wide cut)

Alloy Temper Speed
(SFM)
Feed
(IPR)
Speed
(SFM)
Feed
(IPR)
Speed
(SFM)
Feed
(IPT)
C17200 ANN 1200 - 1500 .010 - .020 200 - 300 .002 - .010 200 - 350 .002 - .008
C17200 HARD 1000 - 1200 .008 - .016 150 - 250 .002 - .006 200 - 250 .001 - .003
C17200 AT, HT 800 - 1000 .005 - .015 100 - 200 .002 - .006 150 - 250 .001 - .002
C17300 HARD 800 - 1200 .010 - .020 150 - 250 .002 - .008 200 - 250 .001 - .003
C17500 ANN 1000 - 1200 .010 - .025 200 - 300 .002 - .010 300 - 400 .002 - .008
C17500 HARD 1000 - 1200 .008 - .020 150 - 300 .002 - .006 200 - 250 .002 - .006
C17500 AT, HT 800 - 1000 .005 - .015 100 - 300 .002 - .006 200 - 300 .002 - .006
C17510 ANN 1200 - 1500 .010 - .025 200 - 300 .002 - .010 300 - 400 .002 - .008
C17510 HARD 1000 - 1200 .010 - .020 150 - 250 .002 - .008 200 - 300 .001 - .006
C17510 AT, HT 800 - 1200 .008 - .016 100 - 300 .002 - .006 200 - 300 .001 - .004

 

*Tapping Recommendations:  Drill Sizes should be 2% - 3% larger than standard in HT, AT, and Hard Alloys.
*For Automatic Tapping RMP should be 10x TPI.
*Reccomend Taps for Pre-Heat Treated Alloys up to 38 HRc.
*All Feeds & Speeds are based on the use of Carbide tooling.
*Actual optimum Feed & Speed will vary upon machine rigidity, horsepower, coolant, tool geometry, etc.

Plate Machining Guidelines

Berylco PLUS, SUPRA, and ULTRA Plate


High Speed Steel Tools
Material Machinability Turning Drilling End Milling
Berylco®
Product
Alloy Rating* Chip
Type
Speed
(SFM)
Feed
(IPR)
Speed
(SFM)
Feed
(IPR)
Speed
(SFM)
Feed
(IPT)
Depth of
Cut (IN)
Plus C17510 40 II 600- 700 .010- .025 125- 500 .002- .005 400- 800 .005- .008 .060- .125

Supra
Ultra
C17200 20 II 200- 300 .010- .020 100- 300 .002- .009 150- 250 .001- .003 .060- .125

  I=Free Cutting
II=Short Chip
For carbide tools,
increase speed 2-3 times
listed value.
For hole depths more
than 2 times the
drill diameter,
reduce speed and feed.
For carbide tools,
increase speed 2-3 times
listed value.
 
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NGK Metals Corporation   917 US Highway 11 South   Sweetwater, TN 37874
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