Test of resistance of a stainless steel to pitting and crevice (ASTM G48 Met. A)

Presentation for participants

Reference of the ILC


References of test methods

ASTM G48 Met. A



Each year

Main characteristics

Speed of corrosion (loss of mass in a fixed exposure time, 72h - 2 temperatures 22° & 50°)

Other characteristics

Density, size, depth of defects according to ASTM G46


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


Number of samples per participation


Max number of operators per participation

1 (it is necessary to order as many participations as there are participating test operators)

Product submitted to tests

Stainless steel

Type of samples


Approximate dimensions of samples

2 x (50x25x5 mm)

Specific preparation to be performed by the participant

Polishing and cleaning of specimens : See § 7-4 and 7-6 ASTM G48.
Grinding / Stripping of specimens: Do not perform any of these operations on specimens
It may be necessary to adapt their dimensions to the equipment (2 test pieces per supplied sample)


Time schedule:


Opening date of registrations


Registration deadline


Date of shipment of samples


Start of the tests


Deadline for carrying out the tests and providing the results


Date of delivery of reports


Note: After the deadline, registrations are still possible. Contact us at ilc@compalab.org for more information.


Price (€)


Price if online payment (€)


Approximate weight (kg)