Our Grades

 

Continuing Dr. Konrad Friedrichs' tradition of high quality carbides, Konrad Micro Drill offers rods in diameter ranges from Ø 1 mm to Ø 16 mm and flat bars in various grades.

 

As the leader in the PCB-business area and through new manufacturing procedures, Konrad Micro Drill can offer various grades for many applications to its customers. These carbide grades were developed through heavy expenditures in R&D with high performance and outstanding quality in mind.

 

Below you can find all of our grades and their different applications and advantages. Don't hesitate to contact us if you have further questions or suggestions.

 

Contact us

  • Telephone

    +49 9221 878023-0

KFM 308 / 38

KFM 47

KFM 39

KFM 606 / 66

KFM 44

KFM 40

KFM G20

Special advantages:

• High wear resistance

• Very sharp cutting edges throughout the whole service life

Usage:

High speed milling and drilling of:

• PCB-boards (small diameter 0.05 - 0.15 mm)

• fiber reinforced materials

• ceramic glass

• dental ceramics

• advanced alloys

 

Material data sheet PDF

Length: up to 400 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM 308/38

ISO-Classification

K20-K30

WC+Doping

[%]

92.00

Co

[%]

8.0

Density

[g/cm3]

14.60

4πσ

[µTm3/kg]

12.0

HC

[kA/m]

35.0

HV30

[ISO 3878]

1970

HRC

[ISO 3738]

94.0

KIC

[MNm-3/2]

9.2

TRS

[N/mm2]

4300

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

0.3

Binding phase

Uniform distribution

Special advantages:

• High wear resistance

• High toughness

• Very sharp cutting edges throughout the whole service life

Usage:

 

• Especially favored for router applications

 

 

 

 

 

Material data sheet PDF

Length: up to 400 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM 47

ISO-Classification

K10-K20

WC+Doping

[%]

93.00

Co

[%]

7.0

Density

[g/cm3]

14.65

4πσ

[µTm3/kg]

11.0

HC

[kA/m]

36.0

HV30

[ISO 3878]

1980

HRC

[ISO 3738]

94

KIC

[MNm-3/2]

9.0

TRS

[N/mm2]

4500

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

0.4

Binding phase

Uniform distribution

Special advantages:

• High wear resistance

• High toughness

• Very sharp cutting edges throughout the whole service life

Usage:

High speed milling and boring of:

• grey cast iron

• hardened steels

• unalloyed steels

• aluminum alloys

• plastics and fiber reinforced materials

 

Material data sheet PDF

Length: up to 400 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM 39

ISO-Classification

K20-K30

WC+Doping

[%]

91.00

Co

[%]

9.0

Density

[g/cm3]

14.40

4πσ

[µTm3/kg]

14.5

HC

[kA/m]

36.0

HV30

[ISO 3878]

1950

HRC

[ISO 3738]

93.9

KIC

[MNm-3/2]

9.3

TRS

[N/mm2]

4500

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

0.3

Binding phase

Uniform distribution

Special advantages:

• High crack and chip resistance

• Process stability caused by constant wear of cutting edges

• High hardness

Usage:

High speed milling and boring of:

• Drilling of PCB-boards in bigger dimensions (0.25 - 0.50 mm)

• grey cast iron

• unalloyed steels

• plastics

• diamond coating

 

Material data sheet PDF

Length: up to 400 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM 606/66

ISO-Classification

K10-K20

WC+Doping

[%]

94.00

Co

[%]

6.0

Density

[g/cm3]

14.85

4πσ

[µTm3/kg]

9.3

HC

[kA/m]

28.0

HV30

[ISO 3878]

1900

HRC

[ISO 3738]

93.8

KIC

[MNm-3/2]

9.3

TRS

[N/mm2]

4000

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

0.6

Binding phase

Uniform distribution

Special advantages:

• High hardness coupled with high transverse rupture strength

 

Usage:

 

• corrosion and heat resistant steels

• stainless steels

• titanium alloys

• non ferrous metals

 

 

Material data sheet PDF

Length: up to 400 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM 44

ISO-Classification

K40-K50

WC+Doping

[%]

88.00

Co

[%]

12.0

Density

[g/cm3]

14.15

4πσ

[µTm3/kg]

18.7

HC

[kA/m]

26.3

HV30

[ISO 3878]

1680

HRC

[ISO 3738]

92.5

KIC

[MNm-3/2]

10.0

TRS

[N/mm2]

4000

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

0.5

Binding phase

Uniform distribution

Special advantages:

• High process stability for standard applications

Usage:

 

• corrosion and heat resistant steels

• stainless steels

• plastics

• non ferrous metals

 

 

Material data sheet PDF

Length: rods up to 400 mm, blades up to 700 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM 40

ISO-Classification

K30-K40

WC+Doping

[%]

90.00

Co

[%]

10.0

Density

[g/cm3]

14.45

4πσ

[µTm3/kg]

16.0

HC

[kA/m]

20.1

HV30

[ISO 3878]

1610

HRC

[ISO 3738]

92.0

KIC

[MNm-3/2]

10.5

TRS

[N/mm2]

3800

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

0.6

Binding phase

Uniform distribution

Special advantages:

• High toughness and impact strength

• Coarse tungsten carbide

Usage:

 

• cast iron

• annealed cast iron

• steel

• paper

• wood

 

Material data sheet PDF

Length: up to 1100 mm

We are able to offer various dimensions on demand

Sorte_Einzeln_47_e

Grade

KFM G20

ISO-Classification

-

WC+Doping

[%]

88.5

Co

[%]

11.5

Density

[g/cm3]

14.35

4πσ

[µTm3/kg]

19.3

HC

[kA/m]

14.0

HV30

[ISO 3878]

1300

HRC

[ISO 3738]

n.m.

KIC

[MNm-3/2]

n.m.

TRS

[N/mm2]

2600

Porosity

A

≤ 02

B

00

C

00

Average WC-grain size

[µm]

3.0

Binding phase

Uniform distribution

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