Form A
Precision Punches
according to DIN 9861 (formerly)

Design:

Specially hardened and tempered, ground and lapped.

Hardness:

Surface roughness:

WS and HWS shank 62 ^+/- 2 HRc, HSS 64 ^+/- 2 HRc                        

R_t £ 0,4 µ
Superfinish (surcharge)

Suitable for punching:

WS =      tungsten alloy silver steel for materials up to 500 N/mm²
HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant for materials with a tensile strenght exceeding 500 N/mm².
HSS =     High speed steel with a special high hardness and wear resistance.

Form B
Precision Punches
according to DIN 9861 (formerly)

Design:

Specially hardened and tempered, ground and lapped.

Hardness:

Surface roughness:

WS and HWS shank 62 ^+/- 2 HRc, HSS 64 ^+/- 2 HRc                        

R_t £ 0,4 µ
Superfinish (surcharge)

Suitable for punching:

WS =      tungsten alloy silver steel for materials up to 500 N/mm²
HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant for materials with a tensile strenght exceeding 500 N/mm².
HSS =     High speed steel with a special high hardness and wear resistance.

Form C
Precision Punches
according to DIN 9861 (formerly)

Design:

Specially hardened and tempered, ground and lapped.

Hardness:

Surface roughness:

WS and HWS shank and step 62 ^+/- 2 HRc, HSS 64 ^+/- 2 HRc                        

R_t £ 0,4 µ
Superfinish (surcharge)

Suitable for punching:

WS =      tungsten alloy silver steel for materials up to 500 N/mm²
HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant for materials with a tensile strenght exceeding 500 N/mm².
HSS =     High speed steel with a special high hardness and wear resistance.

Form C Special-Type
Precision Punches
Special Type for Printed Circuits

Design:

Specially hardened and tempered, ground and lapped.

Hardness:

Surface roughness:

WS and HWS shank and step 62 ^+/- 2 HRc, HSS 64 ^+/- 2 HRc                        

R_t £ 0,4 µ
Superfinish (surcharge)

Suitable for punching:

WS =      tungsten alloy silver steel for materials up to 500 N/mm²
HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant for materials with a tensile strenght exceeding 500 N/mm².
HSS =     High speed steel with a special high hardness and wear resistance.

Form D
Precision Punches
according to DIN 9861

Design:

Specially hardened and tempered, ground and lapped.

Hardness:

Suitable for punching:

WS and HWS shank  62 ^+/- 2 HRc, HSS 64 ^+/- 2 HRc                        

R_t £ 0,4 µ
Superfinish (surcharge)

Suitable for punching:

WS =      tungsten alloy silver steel for materials up to 500 N/mm²
HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant for materials with a tensile strenght exceeding 500 N/mm².
HSS =     High speed steel with a special high hardness and wear resistance.

Form B
Precision Punches
square and rectangular

Design:

Specially hardened, tempered and high quality ground, countersunk head 60° formed, dimensions according to DIN 9861.

Hardness:

Lenghts:

HWS shank  62 ^+/- 2 HRc
HSS 64 ^+/- 2 HRc                             

71 mm

Suitable for punching:

HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant, with material resistance exceeding 500 N/mm².
HSS =     High speeded steel with a special high hardness and wear resistance.

Form D
Precision Punches
with ground countersunk head 60°

Design:

Specially hardened, tempered and high quality ground, countersunk head 60° formed, dimensions according to DIN 9861.

Hardness:

Lenghts:

HWS shank  62 ^+/- 2 HRc
HSS 64 ^+/- 2 HRc                             

71 mm

Suitable for punching:

HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant, with material resistance exceeding 500 N/mm².
HSS =     High speeded steel with a special high hardness and wear resistance

Form DA
Precision Punches
with formed countersunk head 60°

Design:

Specially hardened, tempered and high quality ground, countersunk head 60° formed, dimensions according to DIN 9861.

Hardness:

Lenghts:

HWS shank  62 ^+/- 2 HRc
HSS 64 ^+/- 2 HRc                             

71 mm

Stanzeignung:

HWS =    12% chromium alloy special steel, high percentage of chromium and wear resistant, with material resistance exceeding 500 N/mm².
HSS =     High speeded steel with a special high hardness and wear resistance