Standard Test Blocks

Sr. No.

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

90-120 HB

100 mm dia.

1.11

HB 10/500

90-120 HB

100 mm dia.

1.12

HB 5/500

90-120 HB

100 mm dia.

1.13

HB 5/250

90-120 HB

100 mm dia.

1.14

HB 2.5/62.5

90-120 HB

50 mm dia.

1.15

HB 5/62.5

90-120 HB

100 mm dia.

1.16

HB 2.5/31.25

90-120 HB

50 mm dia.

1.17

HB 2.5/ 15.625

90-120 HB

50 mm dia.