Portable Hardness Tester

Portable Hardness Tester

Category: Leeb Testers Available
For more information, visit our official website at lnbtec.com

Description


ACCESSORIES FOR PORTABLE LEEB HARDNESS TESTER

IMPACT DEVICES  FOR HARDNESS TESTER

Impact device D: Universal device for most hardness requirements

Impact device DC: Ultra-short version; manually loaded on the front; same characteristics as type D;

for testing in boreholes,built-in parts, hollow cylindrical parts, etc.; max. 940 HV

Impact device DL: With extremely long and fine front piece only for steel and cast steel; for testing in

narrow or hard to reach areas; max. 950 HV

Impact device D+15: The front part is narrow and the coil is located behind it; same characteristics as

type D; only for steel;for hardness testing in slots, grooves, recessed areas, gear flanks,grooves, cavities,

tooth flanks, etc.; max. 940 HV

Impact device C: Reduced impact energy of about 1/4 of type D; for tempered or surface treated steel,

small or sensitive-to-shock parts (minimal imprint is left); max. 1000 HV

Impact device G: With large test-tip diameter; impact energy 9 times larger than type D; on steel, gray

or nodular cast iron; for large cast parts and forgings or parts with high surface roughness;max. 650 HB

(only in Brinell)

Impact device E: With a synthetic diamond test tip of approx.5000 HV; for very hard materials (above 50

HRC / 650 HV) such as carbide, barrels, etc.; max. 1200 HV

Material

Method

Impact device

D/DC

D+15

C

G

E

DL

Steel and

cast steel

 

HRC

20~68.5

19.3~67.9

20.0~69.5

 

22.4~70.7

20.6~68.2

HRB

38.4~99.6

 

 

47.7~99.9

 

37.0~99.9

HRA

59.1~85.8

 

 

 

61.7~88.0

 

HB

127~651

80~638

80~683

90~646

83~663

81~646

HV

83~976

80~937

80~996

 

84~1042

80~950

HS

32.2~99.5

33.3~99.3

31.8~102.1

 

35.8~102.6

30.6~96.8

Cold work

tool steel

HRC

20.4~67.1

19.8~68.2

20.7~68.2

 

22.6~70.2

 

HV

80~898

80~935

100~941

 

82~1009

 

Stainless

steel

 

HRB

46.5~101.7

 

 

 

 

 

HB

85~655

 

 

 

 

 

HV

85~802

 

 

 

 

 

Grey cast

iron

 

HRC

 

 

 

 

 

 

HB

93~334

 

 

92~326

 

 

HV

 

 

 

 

 

 

Nodular

cast iron

HRC

 

 

 

 

 

 

HB

131~387

 

 

127~364

 

 

HV

 

 

 

 

 

 

Cast aluminium

alloys

HB

19~164

 

23~210

32~168

 

 

HRB

23.8~84.6

 

22.7~85.0

23.8~85.5

 

 

BRASS(copper-

zinc alloys) 

HB

40~173

 

 

 

 

 

HRB

13.5~95.3

 

 

 

 

 

BRONZE(copper-

aluminium/tin

alloys)

HB

60~290

 

 

 

 

 

Wrought

copper alloys

HB

45~315

 

 

 

 

 

Available type

of impact device

 

DC:

Test hole

or hollow

cylindrical

D+15:

Test

groove or

reentrant

surface

C:

Test small,

light,   thin

parts and

surface of

hardened

layer

G:

Test large,

thick,

heavy

and rough

surface

steel

E:

Test super

high

hardness

material

DL:

Test slender

narrow

groove

or hole

  Testing conditions: 

Type of impact

device

DC(D)/DL

D+15

C

G

E

Impacting energy

Mass of impact body

11mJ

5.5g/7.2g

11mJ

7.8g

2.7mJ

3.0g

90mJ

20.0g

11mJ

5.5g

Test tip hardness:

Dia. Test tip:

Material of test tip:

1600HV

3mm

Tungsten

carbide

1600HV

3mm

Tungsten

carbide

1600HV

3mm

Tungsten

carbide

1600HV

5mm

Tungsten

carbide

5000HV

3mm

synthetic

diamond

Impact device

diameter:

Impact device length:

Impact device weight:

20mm

86(147)/ 75mm 50g

20mm

162mm

80g

20mm

141mm

75g

30mm

254mm

250g

20mm

155mm

80g

Max. hardness

of sample

940HV

940HV

1000HV

650HB

1200HV

Mean roughness value

of sample surface Ra:

1.6μm

1.6μm

0.4μm

6.3μm

1.6μm

Min. weight of sample:

Measure directly

Need support firmly

Need coupling tightly

 

>5kg

2~5kg

0.05~2kg

 

>5kg

2~5kg

0.05~2kg

 

>1.5kg

0.5~1.5kg

0.02~0.5kg

 

>15kg

5~15kg

0.5~5kg

 

>5kg

2~5kg

0.05~2kg

Min. thickness of

sample Coupling tightly

Min. layer thickness

for surface hardening

 

5mm

 

≥0.8mm

 

5mm

 

≥0.8mm

 

1mm

 

≥0.2mm

 

10mm

 

≥1.2mm

 

5mm

 

≥0.8mm

 

 Size of tip indentation

Hardness 300HV

Indentation diameter

Depth of indentation

0.54mm

 24μm

0.54mm

 24μm

0.38mm

 12μm

1.03mm

 53μm

0.54mm

 24μm

Hardness 600HV

Indentation diameter

Depth of indentation

0.54mm

 17μm

0.54mm

 17μm

0.32mm

 8μm

0.90mm

 41μm

0.54mm

 17μm

Hardness 800HV

Indentation diameter

Depth of indentation

0.35mm

 10μm

0.35mm

 10μm

0.35mm

 7μm

--

 --

0.35mm

 10μm

  Support rings for Shaped Materials

   

No.

Type

Sketch of non-conventional 

Supporting ring

Remarks

1

Z10-15

For testing cylindrical

outside surface

R10~R15

2

Z14.5-30

For testing cylindrical

outside surface R14.5~R30

3

Z25-50

For testing cylindrical

outside surface

R25~R50

4

HZ11-13

For testing cylindrical

inside surface

R11~R13

5

HZ12.5-17

For testing cylindrical

inside surface

 R12.5~R17

6

HZ16.5-30

For testing cylindrical

inside surface

 R16.5~R30

K10-15

For testing spherical

outside surface

SR10~SR15

8

K14.5-30

For testing spherical

outside surface SR14.5~SR30

9

HK11-13

For testing spherical

inside surface

SR11~SR13

10

HK12.5-17

For testing spherical

inside surface

SR12.5~SR17

11

HK16.5-30

For testing spherical

inside surface

SR16.5~SR30

 12 

UN

For testing cylindrical

outside surface, radius

adjustable R10~∞

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