Determination of the grain size and of the content of non metallic inclusions of an austenitic steel

Presentation for participants

Reference of the ILC

ME22SS

References of test methods

ISO 643  ASTM E112  ISO 4967  ASTM E45 Methods A, D, E  EN 10247

       

Frequency

Each year

Main characteristics

G (Grain size), Rating of A, B, C, D, DS inclusions according to ISO 4967 method A and/or B and/or ASTM E45 method A and/or D and/or B - Ratings P, M, K according to EN 10247.

       

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

2

Number of samples per participation

Austenitic stainless steel: 3 - Grain size: 24

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 and by several different methods)

Product submitted to tests

For this ILC, a series of samples and a series of images are provided for evaluation.

Type of samples

Bars - Document

Approximate dimensions of samples

Bars: Ø16x45 mm - Document: 1x1 mm

Specific preparation to be performed by the participant

Bars: Preparation of surfaces of observation - Document: None (other than possible necessity to polish the test specimens or to adapt their dimensions to the equipment of the participant)

                   

Special notice for this ILC

Results obtained by several methods may be provided (if the methods are not destructive)

   

Time schedule:

 

Opening date of registrations

15/11/2021

Registration deadline

30/06/2022

Date of shipment of samples

05/09/2022

Start of the tests

15/09/2022

Deadline for carrying out the tests and providing the results

31/10/2022

Date of delivery of reports

15/12/2022

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

                       

Price (€)

350

Price if online payment (€)

280

Approximate weight (kg)

2