CAT-SET

THREADING | Indexable Thread Mills

Recommended Drilling Data | Imperial (in)

NEUTRAL RAKE

Recommended Feed (inch/tooth) by CuƩer Diameter 3 flutes 5 flutes 6 flutes

Machinability*

1.000"

1.500"

2.000"

to

to

to

Hardness (BHN)

Speed (SFM)

ISO Material

1.499" 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.076 0.076 0.076 0.076 0.076 0.102 0.102 0.102 0.114 0.038 0.038

1.999" 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.102 0.102 0.102 0.102 0.102 0.127 0.127 0.127 0.140 0.051 0.051

2.750" 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.127 0.127 0.127 0.127 0.127 0.152 0.152 0.152 0.165 0.064 0.064

E20

100 - 150 Easy 150 - 200 Easy 200 - 250 Easy 85 - 125 Average 125 - 175 Average 175 - 225 Average 225 - 275 Average 125 - 175 Average 175 - 225 Average 225 - 275 Average 275 - 325 Average 125 - 175 Average 175 - 225 Average 225 - 275 Average

274 213 152 274 213 183 152 175 152 137 122 175 152 137 122 114 137 122 107 183 152 137 160 152 175 152 206 191 175 152 145 335 305 191 335 91 46

Free-Machining Steel 1118, 1215, 12L14, etc.

Low-Carbon Steel 1010, 1020, 1025, 1522, 1144, etc.

Medium-Carbon Steel 1030, 1040, 1050, 1527, 1140, 1151, etc.

P

Alloy Steel 4140, 5140, 8640, etc.

275 - 325 325 - 375 300 - 350 350 - 400 250 - 350 135 - 185 185 - 275 185 - 275 275 - 325 150 - 200 200 - 250

Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult

225 - 300 Average

High-Strength Alloy 4340, 4330V, 300M, etc.

100 - 150 Average 150 - 250 Average

Structural Steel A36, A285, A516, etc.

Stainless Steel 303, 416, 420, etc. Stainless Steel PH 17-4, etc. Tool Steel H-13, H21, A-4, etc. Cast Iron Grey, DucƟle, Nodular

M

120 - 150 Easy 150 - 200 Easy 200 - 220 Easy 220 - 260 Average 260 - 320 Average

K

30

Easy Easy Easy

Wrought Aluminum 6061 T6 Cast Aluminum** up to 10% silicon

180 120

N

Brass

30 - 125 Easy

High-Temp Alloy Hastelloy® B, Inconel® 600, etc.

140 - 220 220 - 310

Difficult Difficult

37 27

S

NOTICE: Reduce feed and speed by 30% for tapered thread forms due to addiƟonal material removal. *Refer to recommended pass chart on page xiv when referencing material machinability. **Uncoated thread mills are recommended for cast aluminum applicaƟons.

www.alliedmachine.com | 1.330.343.4283

E20: 22