Hss End Mill Speeds And Feeds

Last modified: June 10, 2024

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Why use the basic free calculator when you can try our full-featured G-Wizard Feeds and Speeds Calculator free for 30 days? Download it now.

It takes just 37 seconds to download and start using G-Wizard. It's free for 30 days, offering excellent feeds and speeds. After that, you can return to our free online calculator if you prefer.

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Or, use our simple online cutting feeds and speeds calculator below:

Hss End Mill Speeds And Feeds

Spindle Speed Calculator

Tool Diameter
inches

Surface Speed / Cutting Speed:
SFM (see table below for SFM values).

To learn what is SFM and how to go from SFM to RPM, click this link.

Spindle Speed:
RPM

Spindle RPM Formula = (12 * SurfaceSpeed) / (PI * CutterDiameter)

Feed Rate Calculator

Feed/Tooth (Chipload):
IPT (inches / tooth)

Number of Flutes (Teeth):

Feed Rate:
IPM (inches / minute)

Feed Rate Formula = Chipload * NumberFlutes * RPM

Milling Surface Speeds for HSS End Mills

Material

Surface Speed (SFM)

Aluminum - Wrought (6061)

250

Brass

200

Cast Iron - Ductile

90

Cast Iron - Gray

100

Copper Alloy - Wrought

120

Magnesium Alloy

250

Stainless Steel

30

Steel - Mild

110

Steel - Hard Alloy

60

Steel - Tool

60

Wood - Hardwood (For more wood see linked article)

500

Need a Material Not Listed? We Can Help!

Drilling Surface Speeds for HSS Twist Drills

Material

Surface Speed (SFM)

Aluminum - Wrought (6061)

250

Brass

200

Cast Iron - Ductile

80

Cast Iron - Gray

120

Copper Alloy - Wrought

70

Magnesium Alloy

250

Stainless Steel

30

Steel - Mild

110

Steel - Hard Alloy

60

Steel - Tool

60

Need a Material Not Listed? We Can Help!

Milling Chiploads for HSS End Mills

Material

Chipload (IPT)

Aluminum - Wrought (6061)

0.005 - 0.010

Brass

0.005 - 0.010

Cast Iron - Ductile

0.004 - 0.008

Cast Iron - Gray

0.002 - 0.006

Copper Alloy - Wrought

0.004 - 0.008

Magnesium Alloy

0.005 - 0.010

Stainless Steel

0.002 - 0.006

Steel - Mild

0.002 - 0.010

Steel - Hard Alloy

0.002 - 0.006

Steel - Tool

0.002 - 0.006

Note: Chipload should be adjusted for tool diameter. Smaller tools tolerate much lower chip loads! You can look this up in the manufacturer's catalog, or we can help.

CNC Feeds and Speeds Chart Wood

Not Sure the Correct Value for Your Cutter? We Can Help!

Hang on: You Deserve Better!

Software that makes anyone a better CNC'er...  Even beginners:

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It took years, we analyzed data from over 250 tooling catalogs,
we built a powerful cutting physics engine
with advanced algorithms that consider
almost 60 different variables, and we
worked with over 50,000 CNC'ers
like yourself to make sure you'd
have the Best Feeds and Speeds.

Improve My Feeds and Speeds For


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Tinted metal lathe machine parts.


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Customer success metrics: 56% longer tool life, 46% faster cutting speed, 94% time saved on feeds and speeds.

Machining industry company logos from companies like Parker, MIT, and Tormach.

More Feeds and Speeds Calculators

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