Yamamoto

Assortment

Hardness Value

Tolerance

Calibration
number(n)

Variation
(R=Max.-Min.)

Materials
(JIS Notation

Dimension(mm)

Standard
Bases

HMV (1, 0.1)

1600

±10%

4(2X2)

2%(HV1)

Si3N4

Ø10X5

JIS B 7735

HMV (1,0.1,0.01)

900,800,700,600,500

±15

6(3X2)

5%(HV0.1)

SK85

Ø25X6

JIS B 7735

HMV (1,0.1,0.01)

400,300,200 (Be Copper)

±15

6(3X2)

5%(HV0.1)

C1720P

Ø25X6(2)

JIS B 7735

HMV (1,0.1,0.01)

100(c2600P),40(c1020P)

±10

6(3X2)

7(100HV0.1), 4(40HV0.1)

←

Ø25X5∴

JIS B 7735

HMV
(0.1,0.01, 0.001)

30 (AU)

±10

6(3X2)

4(HV0.1)

Au

Ø25X5(0.8)

JIS B 7735

UMV (0.01,0.002)

900,70
(Berkovich 9.8mN tested)

±20%

6(3X2)

10%(HV0.01)

SK85

Ø25X6

JIS B 7735

UMV (0.01,0.002)

500,200
(Berkovich 9.8mN tested)

±20%

6(3X2)

10%(HV0.01)

SK85,C1720P

Ø25X6(2)

JIS B 7735

Nano Indentation Hardness Blocks

APPROX430

6
(3X2HV, Nano)

Single Crystal

Ø25X6

JIS B 7735

HN-W
(HV0.01,0.001 Berkovich
9.8mN tested)

HV.0.001

Tungsten

(W:Ø9X6)

HV (30,1)

1000(SK120),900,800,700

±15

10
(5X2)HV30,10

1.5%

SKS3

Ø64X15

JIS  B 7735

HV (10,1)

600,500,400,300,200(SK85),
150(s45c)

±15

6
(3X2)/HV1

1.5%

←

Ø64X15

JIS  B 7735

HV (10,1)

100(c2600P), 40 (c1020P)

±10

(150HV & below 2.2%)

←

Ø64X10

JIS B 7735

HS

100(SK120),95,90,80,70,60,
50,40,30

±2

HV10(5X2)

VHS≤1.5(70HS & below 1.2)

SK85

Ø64X15

JIS B 7731

HS

20(s20C),7(c1020PØ64X10)

±2

HS10(5X2)

◿HS(HS-VHS)≤0.5

←

Ø64X15

JIS B 7731

HL

HLE(Dia)850,800,700,600,500

±15

HV Calibration

SK85

Ø115X33

JIS B 7731

HL

HLD(wc)880,830,730,630,520

±15

HV Calibration

SK85

Ø115X33

Related

HR C

70(SK120),67,64,62,60

±1

10(5X2)

0.2

SKS3

Ø64X15

JIS B 7730

HR C

57,55,50,45,40,35,30,25,20,10

±1

10(5X2)

(40HRC & below 0.3)

SK85

Ø64X15

JIS B 7730

HR A

87,85,83,81,78,75,65,56

±1

10(5X2)

0.3

Same as HRC

Ø64X15

JIS B 7730

HR30N

83,81,78,73,67,60,55,50,41

±1

10(5X2)

0.6

Same as HRC

Ø64X15

JIS B 7730

HR15N(45N)

92,90,87,85,80,75 (43) (23)

±1

10(5X2)

0.6

Same as HRC

Ø64X15

JIS B 7730

HRB S

100,95,90

±2

10(5X2)

0.8

SK85

Ø64X10

JIS B 7730

HRB S

82,72,62,52,42,32

±2

10(5X2)

(50HRB & below 1.0)

C2600P

Ø64X10

JIS B 7730

HR30T S

78,72,62,52,42,38,32

±2

10(5X2)

1.0

Same as HRB

Ø64X10

JIS B 7730

HR15T S

87,82,78

±2

10(5X2)

1.0

Same as HRB

Ø64X10

JIS B 7730

HR
(E•M•L•R•F•S)

HRE90 HRM107 HRL118
HRR123 HRF90

±2

10(5X2)

1.0

(100HV)

Ø64X10

JIS K 7202

HR
(E•M•L•R•F•S)

HRM67 HRL92 HRR105 HRS90

±2

10(5X2)

1.0

(40HV)

Ø64X10

JIS K 7202

HBW(10/3000)

600,550,500,450,400,350

±15

6(3X2)

1.5%

SK85

Ø115X18

JIS B 7736

HBW(10/3000)

300,250,229(d=4mm),200,180

±15

6(3X2)

1.5%

SK85

Ø115X18

JIS B 7736

HBW(10/3000)

HBW(10/3000)150,HBW(10/500)125

±15

6(3X2)

2.5%

S45C

Ø115X18

JIS B 7736

HBW(10/3000)

HBW(10/500)100

±15

6(3X2)

3%

S10C

Ø115X18

JIS B 7736