KH-210 Portable Hardness Tester
  • Compact metal case, suitable for use under poor working conditions.
  • Test at any angle, even upside down.
  • Wide measuring range. It can measure the hardness of all metallic materials. Direct display of hardness scales HRB, HRC, HV, HB, HS, HL
  • Large screen, showing all functions and parameters. With EL background light.
  • Large capacity memory could store 500 groups information.
  • Data-pro Software to connect with PC via USB port.
  • Software calibration function
  • Outline:125*71*27mm
  • Weight:0.3KG(Host)

 Function characteristics:

  • Has a starting value software calibration function, ensure the data in any industry codes and standards applicable and accurate.
  • Hermetically sealed metal shell, solid and durable, has excellent resistance to vibration, shock and electromagnetic interference ability.
  • Menu operation, information rich, intuitive, the realization of arbitrary switching material and hardness of system's key type, simple and convenient.
  • Has the function of automatic alarm. Pre-set tolerance limit, beyond the range of automatic alarm, especially suitable for batch testing.
  • Convertible all hardness standards (HL, HB, HRB, HRC, HRA, HV, HS), without calculation.
  • Can be equipped with 7 different impact device, automatic identification, replaced without the need to calibrate, good compatibility.
  • Large screen liquid crystal display, a bright LED backlight, convenient in light gray environment.
  • Of automatic sleep, automatic shutdown, the remaining power prompt function, low power design.
  • With RS232 communication interface, can be convenient, fast exchange data with computer printing and parameter setting.
  • The 5 ordinary batteries, can work continuously for not less than 200 hours.

 Technical parameters: 

  • Measuring range:(170-960)HLD,(17-68.5)HRC,(19-651)HB,(80-976)HV,(30-100)HS,(59-85)HRA,(13-100)HRB
  • Measuring direction:360°(↓↖↗↘↙→←↑)
  • Hardness Scale: HL, HB, HRB, HRC, HRA, HV, HS
  • Outline dimension: 125*71*27mm
  • Display: dot matrix LCD,128×64 dots
  • Data memory:  max. 600 groups (relative to impact times 32~1)
  • Working voltage: 3V (2 AA size alkaline battery)
  • Continuous working period: about 50 hours (With backlight off)
  • Communication interface:RS232

Measuring Range

HLD(170-960) (170-960)HLD,(19-651)HB,(13-100)HRB,(17-68.5)HRC,(59-85)HRA,(80-976)HV、(30~110)HS

Impact Directions

up, down, horizontal, slanting up, slanting down

Measuring materials

Steel and cast steel, alloy tool steel, stainless steel, gray cast iron, nodular cast iron, cast aluminum alloy, copper zinc alloys (brass), an alloy of copper and tin, copper (bronze), forged steel

Hardness scales

HL, HB, HRB, HRC, HRA, HV,HS.

Display

128*64 digital matrix LCD

Memory

600group(32 every group)

Work voltage

3V( 2 AA alkaline batteries)

Interface port

RS232

Dimensions

125mm*71mm*27mm

Weight

0.3KG

Continuous working period

200 hours (with backlight off)

 Standard configuration table: 

 

No.

Item

Quantity

Remarks

Standard

Configuration

1

Main body

1

 

 

2

 Impact device

1

D type

 

3

Standard test block

1

 

 

4

Nylon brush A

1

 

 

5

Small support ring

1

 

 

6

Alkaline battery

2

(No. five )Non - Aviation

 

7

Manual

1

 

 

8

Screwdriver

1

 

 

9

Data processing software

1 set

 

 

10

Communication cable

1

 

 

11

Instrument container

1

 

 

12

Operating instruction

1

 

Optional Configuration

1

Cleaning brush (II)

1

 

2

Other type of impact devices

7

Refer to pictures blew

3

Connecting line

 

 

4

Other type of support rings

12

Refer to pictures blew

5

Other type of impact ball / body

2

 

 Error and repeatability of displayed value 

No.

Type of impact device

Hardness value of hardness block

Error of displayed value

Repeatability

1

D

760±30HLD

530±40HLD

±6 HLD

±10 HLD

6 HLD

10 HLD

2

D

50±5 HLC

30±6 HLC

±1 HRC

±2 HRC

1 HRC

2 HRC

3

D

700±30HB

500±40HB

±5 HB

±8 HB

5 HB

8 HB

 Main Application

  • Die cavity of molds.
  • Bearings and other parts.
  • Failure analysis of pressure vessel, steam generator and other equipment.
  • Heavy work piece.
  • The installed machinery and permanently assembled parts.
  • Testing surface of a small hollow space.
  • Material identification in the warehouse of metallic materials.
  • Rapid testing in large range and multi-measuring areas for large-scale work piece.

 Testing range 

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 aluminum 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-aluminum/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 


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