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

Presentation for participants

Reference of the ILC:

CO21SS6

   

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:

None (other than possible necessity to adapt dimensions of the test specimen to the equipment of the participant) (2 test pieces per supplied sample)

   

Time schedule:

 

Opening date of registrations

15/09/2020

Registration deadline

30/06/2021

Date of shipment of samples

05/09/2021

Start of the tests

15/09/2021

Deadline for carrying out the tests and providing the results

31/10/2021

Date of delivery of reports

15/12/2021

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