Graphite classification of cast irons

Presentation for participants

Reference of the ILC:



References of test methods:

ISO 945-1  ISO TR 945-2  ASTM A247



Each year


Main characteristics:

Form, distribution and size of graphite


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:


Number of samples per participation:


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:

Cast iron

Type of samples:


Approximate dimensions of samples:

Ø25x10 mm

Specific preparation to be performed by the participant:

Preparation of surfaces of observation


Special notice for this ILC:

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


Price (€)


Price if online payment (€)


Approximate weight (kg)