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

Presentation for participants

Reference of the ILC

CO22SS6

References of test methods

ASTM G48 Met. A

       

Frequency

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

2

Number of samples per participation

3

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

Parrallelepipeds

Approximate dimensions of samples

2 x (50x25x5 mm)

Specific preparation to be performed by the participant

Polishing and cleaning of specimens : Proceed according to your usual procedure in accordance with your respective interpretation of ASTM G48 § 7-4 and 7-6.
(possible necessity to adapt their dimensions to the equipment) (2 test pieces per supplied sample)

   

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 (€)

300

Price if online payment (€)

240

Approximate weight (kg)

1