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Recommended Reaming Speeds and Feeds

Material Group

Speed (SFM)

Feed (Inch/Rev) for each Diameter

1/8

1/4

1/2

3/4

Aluminum and Alloys

175-250

0.0040

0.0060

0.0100

0.0140

Brass / Bronze

70-120

0.0040

0.0050

0.0070

0.0100

Copper and Alloys

75-120

0.0060

0.0080

0.0120

0.0040

Cast Iron (Soft) 120-220- Bhn

45-75

0.0030

0.0040

0.0060

0.0090

Cast Iron (Hard) 220-320 Bhn

30-50

0.0020

0.0030

0.0040

0.0050

Ductile Iron

50-75

0.0040

0.0060

0.0090

0.0120

Malleable Iron

75-100

0.0050

0.0070

0.0110

0.0150

Magnesium and Alloys

200-250

0.0050

0.0070

0.0100

0.0130

Hi-Temp. Alloys - Nickel Base

20-40

0.0020

0.0030

0.0040

0.0060

Monel - High Nickel Steels

30-50

0.0030

0.0040

0.0060

0.0090

Plastics - Glass Filled

150-180

0.0020

0.0020

0.0040

0.0050

Plastics

130-150

0.0020

0.0020

0.0040

0.0050

Low Carbon Steels Annealed

65-85

0.0060

0.0100

0.0140

0.0200

Medium Carbon Steels 275-425 Bhn

40-85

0.0040

0.0060

0.0090

0.0110

Hardened Steels 48-52 Rc ``C"

20-50

0.0020

0.0030

0.0040

0.0050

Stainless Steels Soft 135-275 bhn

55-85

0.0040

0.0060

0.0080

0.0120

Stainless Steels Hard 275-425 bhn

40-65

.0030

0.0040

0.0050

0.0050

Titanium (Soft)

55-90

0.0040

0.0060

0.0100

0.0110

Titanium (Hard)

30-65

0.0030

0.0050

0.0080

0.0100

Refractory Alloys

50-90

0.0040

0.0050

0.0070

0.0090


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