ISO 2039-2

ROCKWELL HARDNESS

HISTORICAL

Year

2016

2017

2018

2019

2020

Number of participants

12

13

12

14

14

Participants OK

8

8

7

10

8

Participants NOT OK

1

3

2

2

5

Participants CANCELED

3

2

3

2

1

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.