ISO 4545

KNOOP HARDNESS

HISTORICAL

Year

2016

2017

2018

2019

2020

Number of participants

9

10

15

15

13

Participants OK

-

8

11

9

8

Participants NOT OK

-

1

3

4

5

Participants CANCELED

-

1

1

2

0

References:

Participants OK: All properties were determined correctly

Participants NOT OK: Some or all of the properties were not determined correctly

Participants CANCELED: A participant who has decided not to continue or has not submitted results before the deadline.