CORROSION TESTS


The corrosion tests increased their importance both for the materials homologation and the failure analysis. It is very important during corrosion tests to operate according to the referenced standards and to check the test parameters in order to obtain reliable and repeatable results. OMECO offers the warranty of the ACCREDIA accreditation for most of the corrosion tests listed here below. Moreover its know-how and its qualified personnel permit also to study and to perform "special" corrosion tests for any kind of materials. OMECO has wide chambers which are suitable for Salt Spray (Fog) tests and climatic tests.


Salt Spray (Fog) Tests according to:

ASTM B 117: Salt Spray (Fog) Test

ASTM B 368: CASS Test

UNI EN ISO 9227: Corrosion tests in artificial atmospheres - Salt spray tests:

NSS: Neutral Salt Spray

AASS: Acetic Acid Salt Spray

CASS: Cupro-Acetic Salt Spray



Intergranular Corrosion and Stress corrosion Tests according to:

ASTM A262/B: Ferric sulfate-sulfuric acid test

ASTM A262/C: Nitric acid test (Huey test)

Spec. UREA CASALE 8000-00-MSM-001/007 and MSW008

Spec SNAMPROGETTI CR.UR. 510 (Huey test)

ASTM A262/E: Copper-copper sulfate-sulfuric acid test

ASTM G28/A-B: Detecting susceptibility to intergranular attack in wrought Nickel-Rich, Chromium bearing Alloys

UNIEN ISO 3651-1: Determination of resistance to intergranular corrosion of stainless steels - Austenitic and ferritic - austenitic (duplex) stainless steels - Corrosion test in nitric acid medium by measurement of loss in mass (Huey test)

UNIEN ISO 3651-2: Determination of resistance to intergranular corrosion of stainless steels - Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing sulfuric acid


Pitting and Crevice Corrosion Tests according to:

ASTM G48/A-B:  Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution


Stress Corrosion Cracking Tests according to:

ASTM G36: Evaluating Stress-Corrosion-Cracking Resistance of Metals and Alloys in a Boiling Magnesium Chloride Solution

Also Slow Strain Rate Testing could be evaluated on request


Petrochemical and oilfield Hydrogen Embrittlement tests according to:

NACE TM 0284: H.I.C. test (Hydrogen Induced Cracking) using synthetic seawater and hydrogen sulfide (H2S) or acidified NACE solution saturated with hydrogen sulfide (H2S)

NACE TM 0177: S.S.C. test (Sulfide Stress Cracking) in acidified aqueous solution of NaCI saturated with H2S


Potentiostatic and potentiodinamic polarisation tests

These latter are mostly fitted to customer requirements and shall be evaluated on request.