Charpy/Izod Notching Broaches

Charpy/Izod Notching Broaches

Parent Product
Charpy/Izod Metal Sample Preparation Equipment
Charpy/Izod Notching Broaches

Our Charpy/Izod Notching Broaches meet most standards i.e. BS, ISO, EN, ASTM and many other International Standard notch profiles.

Due to the variety of broaches and notch configurations, broaches are ordered separately.

All broaches, which have a unique serial number, are tested to ensure that they cut the correct form before despatch and a Certificate of Conformance is issued with each broach.

Our broaches are manufactured using the latest CNC grinding techniques at our factory in Kent, giving customers the reassurance that they are purchasing a quality product.

STANDARD BROACHES

Our standard broaches are designed for use on carbon and low alloy steels. 

DRAWING
NUMBER
 

BROACH
TYPE

NOTCH

DEPTH

ANGLE

RADIUS

BROACH
KEEP

CARBON & LOW ALLOY STEELS

COMMENT

CNB30-027A2

C

V

2mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 42 HRC

 

CNB30-028A2

M

V

1mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 42 HRC

 

CNB30-002A2

H

V

3.3mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 40 HRC

For use on round specimens.

CNB30-035A2

T

V

3.5mm

45˚ +/- 1˚

0.25mm +0.020/-0.025

X

< 35 HRC

GOST 9454 (0.1/0.27mm radius).

CNB30-004A2

JS

U

5mm

 

1 mm +/-0.025

Y

< 32 HRC

With packer CNB30-029A4 - 2 cuts required.

CNB30-005A2

N

U

2mm & 3mm

 

1 mm +/-0.025

Y

< 32 HRC

When cutting 2mm depth, only 2/3rd of cutting length is used.

CNB30-006A2

P

U

2mm

 

1 mm +/-0.025

Y

< 35 HRC

 

 

HARD CUT COATED BROACHES

This is a superior broach to the standard broach and is recommended for use on our Variable Speed Machine for tougher, harder and stainless steel materials to extend tool life. 
 
If used on our Hand Machine, tool life is dependant on a smooth cutting action by the operator and the machining difficulty of the material.

DRAWING
NUMBER
 

BROACH
TYPE

NOTCH

DEPTH

ANGLE

RADIUS

BROACH
KEEP

CARBON & LOW ALLOY STEELS

COMMENT

CNB30-027A2H

C

V

2mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 52 HRC

 

CNB30-028A2H

M

V

1mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 52 HRC

 

CNB30-002A2H

H

V

3.3mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 50 HRC

For use on round specimens.

CNB30-035A2H

T

V

3.5mm

45˚ +/- 1˚

0.25mm +0.020/-0.025

X

< 45 HRC

GOST 9454 (0.1/0.27mm radius).

CNB30-004A2H

JS

U

5mm

 

1 mm +/-0.025

Y

< 42 HRC

With packer CNB30-029A4 - 2 cuts required.

CNB30-005A2H

N

U

2mm & 3mm

 

1 mm +/-0.025

Y

< 42 HRC

When cutting 2mm depth, only 2/3rd of cutting length is used.

CNB30-006A2H

P

U

2mm

 

1 mm +/-0.025

Y

< 45 HRC