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Carmex Precision Tools
Technical Information
 
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Stocked at Innovative Tool Sales
 

Threading Tools
         
 
   
 

 
 

We have two very helpful programs available for to download....

.... just Right-Click and "Save As" to any location in your hard drive

Cycle Time Calculator or a Mini-Mill Thread Milling Program
 

Choose the CARMEX grade specifically formulated for your application from the following list

 

Coated Grades

P25C

 For treated and hard Alloy Steels (25 HRC & up) at medium to low cutting speeds.

MXC

 Coated Micrograin, for Free Cutting untreated Alloy Steels (Below 30 HRC). For Stainless Steels and Cast Iron.

BXC

 For low cutting speed. Works well with wide range of Stainless Steels.

T20

 For application that require Super Low cutting speeds (such as very small diameters in which even high rotational speed generates only a low cutting speed).

Uncoated Grades

P30

 Popular uncoated carbide grade for Carbon and Cast Steels. Works well at medium to low cutting speeds.

K20

 For non Ferrous metals. Aluminum and Cast Iron.

 

  
 
 

 
 

After selecting a suitable carbide grade, please refer to the Speed Selection Chart to select a recommended cutting speed.
 

Grades

P30

K20

P25C

MXC

BXC

T20

Materials

Uncoated

Coated

Low & Medium
Carbon Steels Materials

70-120
230-400

(m/min)
(Ft/min)

100-200
330-660

100-250
330-830

20-100
70-330

10-50
30-160

High Carbon
Steels

60-100
200-330

80-160
260-530

80-180
260-590

30-80
100-260

10-40
30-130

Alloy Steels
Treated steels

50-80
160-260

50-120
160-400

90-120
300-390

40-90
130-300

10-40
30-130

Stainless Steels

70-100
230-330

80-100
260-330

 

90-160
300-520

30-90
100-300

5-30
15-100

Cast Steels

70-110
230-500

 

90-150
300-500

130-170
430-560

40-90
130-300

10-40
30-130

Cast Iron

 

60-100
200-330

 

70-150
230-500

40-90
130-300

10-40
30-130

Non Ferrous
& Aluminum

 

120-200
400-660

 

150-300
490-980

20-120
70-400

10-60
30-200

As you may note, cutting speed is shown in terms of a range. In most standard cases, choosing a speed in the middle of the range, would be a good choice for a start. For hard metals, reduce cutting speed.

  

 

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