HST-570HAD Digital Multi-functional Hardness Tester

Testing force(N)

Initial Testing Force

98.07(10kg)

Tolerance ±2.0%

Total testing force

588.4(60kg)

Tolerance ±1.0%

980.7(100kg)

1471(150kg)

Indenter

Diamond Cone Indenter

1.5875mm Ball Indenter

Scales

HRA

HRB

HRC

HRD

Max height of samples

175mm

Hardness Scale

Hardness Range of

 The Standard Testing Blocks

The Max. Tolerance 

of Display Value

Repeatability a

HRA

(20~≤75)HRA

±2HRA

≤0.02(100-H)or

 0.8 Rockwell Unit b

(>75~≤88)HRA

±1.5HRA

HRB

(20~≤45)HRB

±4HRB

≤0.04(130-H)or

 1.2 Rockwell Unit b

(>45~≤80)HRB

±3HRB

(>80~≤100)HRB

±2HRB

HRC

(20~≤70)HRC

±1.5HRC

≤0.02(100-H)or 

0.8 Rockwell Unit b

a:H is average hardness value      b:Confirm as higher value

Testing force

294.2N(30kg)

Tolerance ±1.0%

306.5N(31.25kg)

612.9N(62.5kg)

980.7N(100kg)

1839N(187.5kg)

Indenter

φ2.5mm,φ5mm Ball Indenter

Scales

HBW1/30

HBW2.5/31.25

HBW2.5/62.5

HBW5/62.5

HBW10/100

HBW2.5/187.5

Eyepiece magnification

15×

Objective

2.5×(resolution 0.5μm),5×(resolution 0.25μm)

Max Height of Sample

For 2.5×:Max Height is 95mm

For 5×:Max height is 115mm

Hardness Block(HBW)

Tolerance(%)

Repeatability (%)

≤125

±3

3

125<HBW≤125

±2.5

2.5

>225

±2

2

Test force

294.2N(30kg)

Tolerance ±1.0%

980.7N(100kg)

Indenter

Diamond Vickers Indenter

Scale

HV30

HV100

Eyepiece magnification

15×

Objective magnification

5×(Resolution 0.25μm)

Max. Height of Specimen

115mm

Tolerance of Displayed Value

Repetition of Displayed Value

Hardness

 scale

Value of 

Hardness Block

Tolerance of

 Displayed Value

Value of

 Hardness Block

Repetition of 

Displayed Value

HV30

HV100

≤250HV

±3%

≤225HV

6%

300~1000HV

±2%

>225HV

4%