Brinell, Vickers and Rockwell hardness tests of a metal (low hardness)

Presentation for participants

Reference of the ILC:

HD21SM

   

References of test methods:

ISO 6506-1  ISO 6507-1  ISO 6508-1  ASTM E10  ASTM E92
ASTM E18  ASTM A370

   

Frequency:

Each year

                       

Main characteristics:

HBW2,5/187,5 (Brinell scale) - HV5, HV10, HV30 (Vickers scales) - HRB (Rockwell scale)

Other characteristics:

HBW10/3000, HBW5/750, HBW1/30 (Brinell scales) - HRA, HRC (Rockwell scales)

 

Caution: The number of determinations may be low for the secundary characteristics, what may make inefficient the comparison between laboratories

   

Determination of the assigned values (“true values” for each characteristic):

By statistical computation of the totality of the results with possible selection on competence criteria (accreditation, validation by a reference body, quantity of tests performed in the year), test to detect possible collusion, merging of results not obtained in reproductibility conditions, suppression of technically unvalid results.

   

Type of statistical computation:

For numerical results, the statistical computation will provide an assigned value with its attached uncertainty, values of standard deviations for repeatability and reproductibility, limits of alerts for bias and repeatability of the participant, indiviual values for uncertainty of results of participants.

Number of products submitted to tests:

1

Number of samples per participation:

3

Max number of operators per participation:

10 (For this CIL, the type of test and sample size allow to provide results determined by several different operators)

Product submitted to tests:

Low hardness metal

Type of samples:

Parrallelepipeds

Approximate dimensions of samples:

50x50x15 mm

Specific preparation to be performed by the participant:

None (other than possible necessity to adapt dimensions of the test specimen to the equipment of the participant)

                   

Special notice for this ILC:

Forecast hardness level 150-250 HV. Some scales may be inappropriate, according to the type of metal. Participants may provide results for several scales.

   

Time schedule:

 

Opening date of registrations

15/09/2020

Registration deadline

15/03/2021

Date of shipment of samples

05/06/2021

Start of the tests

10/06/2021

Deadline for carrying out the tests and providing the results

31/08/2021

Date of delivery of reports

15/10/2021

Note: After the deadline, registrations are only accepted within the limit of availability of samples

                       

Price (€)

300

Price if online payment (€)

240

Approximate weight (kg)

1