Knoop Hardness Reference Material (Part Numbers)

Hardness reference materials in quality control:
The boost for your process safety! The daily verification, performed by the user, is described in the according hardness testing standards and significantly contributes to quality management processes.
In the daily verification process, all parameters of the hardness test system that build up to the hardness value, are examined by indentations on the hardness reference material.
This periodical inspection of the machine by means of hardness reference materials should be carried out immediately before the daily start of the test schedule.
An according documentation enhances the process safety, as value shifts due to damage or malfunction can be detected easily. In addition, the repeatability of results of the hardness testing machine can also be checked with the hardness reference materials.
Mitutoyo offers a comprehensive range of hardness reference materials (hardness test blocks) in different materials with hardness levels ranging from 200 to 2100HK to suit your quality management procedure perfectly.
The tolerance for the nominal value of steel and aluminium hardness testblocks is ± 25HK. (Does not apply for carbide materials) For carbide reference materials, the actual calibrated value can be significantly higher.
Mitutoyo reference materials:
High-end quality Made in Germany - Independent DAkkS calibration according to DIN EN ISO 4545 and/or ASTM E92 in an accredited laboratory Large square or rectangular surface with large space advantage over triangular or round test blocks Short delivery time MPE "Maximum Permissible Error" of the hardness testing system engraved (does apply for carbide materials) – all relevant information at a glance.
If the diagonal lengths are outside the 20µm limit of ISO 4545 the reference material is exclusively supplied with ASTM E92 calibration certificates.
A range of additional services can be ordered:
- Up to three different scales on one reference material (Does not apply for Brinell materials)
- A lasered grid on the surface for accurate indentation spacing
- Alternative ASTM accredited calibration.
- Double calibration according to ISO and ASTM standards
- A tighter tolerance of ± 15HK for the nominal value (Does not apply for carbide materials)
- Compare the surface sizes for the evaluation of the price - performance ratio.

Part Number

Once your search is narrowed to one product,
the corresponding part number is displayed here.

Part Numbers

Data to be displayed: 30; 45; 60

Part Number
63ETB952
63ETB953
63ETB956
63ETB959
63ETB960
63ETB961
63ETB964
63ETB965
63ETB967
63ETB968
63ETB969
63ETB972
63ETB975
63ETB976
63ETB977
63ETB980
63ETB981
63ETB984
63ETB985
63ETB986
63ETB989
63ETB990
63ETB993
63ETB994
63ETB997
63ETB998

Related to	Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	Hardness Value	Product line	Scale 1	Standard	Test Force (kgf)	Test Force (N)
Data sheet	560.53 €	1	60 Days	300	HM-210. HM-220	HK0.01	ISO 4545-3	0.01	0.09807
Data sheet	560.53 €	1	60 Days	400	HM-210. HM-220	HK0.01	ASTM E92	0.01	0.09807
Data sheet	560.53 €	1	60 Days	600	HM-210. HM-220	HK0.01	ASTM E92	0.01	0.09807
Data sheet	560.53 €	1	60 Days	250	HM-210. HM-220	HK0.015	ISO 4545-3	0.015	0.1471
Data sheet	560.53 €	1	60 Days	300	HM-210. HM-220	HK0.015	ISO 4545-3	0.015	0.1471
Data sheet	560.53 €	1	60 Days	400	HM-210. HM-220	HK0.015	ISO 4545-3	0.015	0.1471
Data sheet	560.53 €	1	60 Days	600	HM-210. HM-220	HK0.015	ASTM E92	0.015	0.1471
Data sheet	560.53 €	1	60 Days	700	HM-210. HM-220	HK0.015	ASTM E92	0.015	0.1471
Data sheet	560.53 €	1	60 Days	250	HM-210. HM-220	HK0.025	ISO 4545-3	0.025	0.2452
Data sheet	560.53 €	1	60 Days	300	HM-210. HM-220	HK0.025	ISO 4545-3	0.025	0.2452
Data sheet	560.53 €	1	60 Days	400	HM-210. HM-220	HK0.025	ISO 4545-3	0.025	0.2452
Data sheet	560.53 €	1	60 Days	600	HM-210. HM-220	HK0.025	ISO 4545-3	0.025	0.2452
Data sheet	560.53 €	1	60 Days	250	HM-210. HM-220	HK0.05	ISO 4545-3	0.05	0.4903
Data sheet	560.53 €	1	60 Days	300	HM-210. HM-220	HK0.05	ISO 4545-3	0.05	0.4903
Data sheet	560.53 €	1	60 Days	400	HM-210. HM-220	HK0.05	ISO 4545-3	0.05	0.4903
Data sheet	560.53 €	1	60 Days	600	HM-210. HM-220	HK0.05	ISO 4545-3	0.05	0.4903
Data sheet	560.53 €	1	60 Days	700	HM-210. HM-220	HK0.05	ISO 4545-3	0.05	0.4903
Data sheet	560.53 €	1	60 Days	250	HM-210. HM-220	HK0.1	ISO 4545-3	0.1	0.9807
Data sheet	560.53 €	1	60 Days	300	HM-210. HM-220	HK0.1	ISO 4545-3	0.1	0.9807
Data sheet	560.53 €	1	60 Days	400	HM-210. HM-220	HK0.1	ISO 4545-3	0.1	0.9807
Data sheet	560.53 €	1	60 Days	600	HM-210. HM-220	HK0.1	ISO 4545-3	0.1	0.9807
Data sheet	560.53 €	1	60 Days	700	HM-210. HM-220	HK0.1	ISO 4545-3	0.1	0.9807
Data sheet	560.53 €	1	60 Days	250	HM-210. HM-220	HK0.2	ISO 4545-3	0.2	1.961
Data sheet	560.53 €	1	60 Days	400	HM-210. HM-220	HK0.2	ISO 4545-3	0.2	1.961
Data sheet	560.53 €	1	60 Days	600	HM-210. HM-220	HK0.2	ISO 4545-3	0.2	1.961
Data sheet	560.53 €	1	60 Days	700	HM-210. HM-220	HK0.2	ISO 4545-3	0.2	1.961

Basic information

Accreditation Body	DAkkS	Accreditation Standard	ISO 17025	Dimension(mm)	30x30x6mm
Gross Weight(g)	160	Indenter	Diamond pyramid	Material	steel
Method	Knoop	Net Weight(g)	50	Surface(mm2)	900

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Basic Attributes

Hardness Value
250

300

400

500

600

700

800

900
Clear
Product line
HM-220

HM-210. HM-220

HM-210. HM-220. HV-120

HM-210. HM-220. HV-110. HV-120

HV-110 / HV-120

HV-110. HV-120
Clear
Scale 1
HK0.005

HK0.01

HK0.015

HK0.025

HK0.03

HK0.05

HK0.1

HK0.2

HK0.3

HK0.5

HK1

HK2
Clear
Standard
ASTM E92

ISO 4545-3
Clear
Test Force(kgf)
0.005

0.01

0.015

0.025

0.03

0.05

0.1

0.2

0.3

0.5

1

2
Clear
Test Force(N)
0.04903

0.09807

0.1471

0.2452

0.2942

0.4903

0.9807

1.961

2.942

4.903

9.807

19.61
Clear
Type
Clear