HARDNESS TEST BLOCKS

Type

Range

Approx Size

1.1 HRC

20-30, 35-55, 59-65

50 mm dia.

1.2 HRB

80-100

50 mm dia.

1.3 HRB

40-70

50 mm sq.

1.4 HRA

As applicable

50 mm dia.

Brinell Test Blocks

.

.

1.5 HB 2.5/187.5kgf

200-250, 250-300,
300-350, 350-400

50 mm dia.

1.6 HB 5/750 kgf
And
HB 10/3000kgf

180-200, 200-250,
250-300, 300-350

105 mm dia.

350-400, 400-450,
450-500, 500-600

105 mm dia.

1.7 VICKERS-HV-5 & above

100-150, 180-220,
200-300, 300-400, 400-600, 600-800

40mm dia.

1.8 Low Load Vickers

HV

.

1.8a HV - 3, HV- 2
HV - 2.5

100-150, 200-400,
400-600, 600-800

.

1.8b HV - 1

100-150, 200-400,
400-600, 600-800

.

1.8c HV - 200 gm
       HV - 300 gm
       HV - 500 gm

100-150, 200-400,
400-600, 600-800

.

Superficial Scale

.

..

1.9a 15N, 30N, 45N

50 mm dia.

.

1.9b 15T, 30T, 45T

50 mm dia.

.

Test Blocks

Hardness Range

Size

1.10 HB 10/1000
1.11 HB 10/500
1.12HB 5/500
1.13 HB 5/250
1.14 HB 2.5/62.5
1.15 HB 5/62.5
1.16 HB 2.5/31.25
1.17 HB 2.5/ 15.625

90-120 HB
90-120 HB
90-120 HB
90-120 HB
90-120 HB
90-120 HB
90-120 HB
90-120 HB

100 mm dia.
100 mm dia.
100 mm dia.
100 mm dia.
50 mm dia.
100 mm dia.
50 mm dia.
50 mm dia.