As an industrialist, you wish to carry out analyses of stainless steels according to the ISO 3651-1 standard
Why analyze the corrosion resistance of stainless steels according to ISO 3651-1?
ISO 3651-1 defines a test method for evaluating the susceptibility of stainless steels to intergranular corrosion. This test is essential to ensure the durability, mechanical strength, and regulatory compliance of your materials, particularly in demanding sectors such as aerospace, medical devices, energy, chemicals, automotive, and luxury goods.
When your components are exposed to corrosive environments, a lack of resistance can lead to breakage, non-conformities, production stoppages, or in-service failures. It is precisely to avoid these risks that ISO 3651-1 is used as a global standard.
Our stainless steel analysis services according to ISO 3651-1
Analysis according to ISO 3651-1: implementation of the test of exposure to corrosive solutions defined by the standard.
Metallographic analysis: observation of the microstructure before and after testing to detect precipitation, localized attacks, decarburization, etc.
R&D support and materials optimization: development or improvement of alloys, treatments, welding processes or coatings adapted to your constraints.
Assessment of sensitivity to intergranular corrosion: observation of affected areas, measurement of the level of metallurgical attack, comparison to normative thresholds.
Expertise and interpretation of results: our materials engineers interpret the corrosion mechanisms and identify the causes: heat treatment, welding, environment, composition…
The FILAB laboratory assists you in the analysis of stainless steels according to the ISO 3651-1 standard
Why choose FILAB for stainless steel analysis according to ISO 3651-1
For over 30 years, the FILAB laboratory has been putting its expertise and state-of-the-art analytical resources at the service of businesses, offering comprehensive corrosion expertise.
From analysis to in-depth study of corrosion phenomena, we support you with customized solutions tailored to your industrial challenges.
Our solutions in steel analysis and expertise
Metallographic analysis of a steel
Analysis of welds on steels
Study of fracture surfaces on steels
Ageing study (corrosion phenomena, surface alteration, etc.) on steels
Measurement of coating thicknesses on steel metal parts
Corrosion resistance study on steels
Analysis and characterization of surfaces (roughness, defects, etc.) on steels
FAQ
Stainless steel batch qualification
Welding process validation
Conformity testing of components exposed to corrosion
Investigation of in-service failures or breakages
Heat treatment optimization
This is an international standard that describes an intergranular corrosion test applied to stainless steels. It defines the immersion conditions in a corrosive solution to assess the material's susceptibility to intergranular attack.
No. ISO 3651-1 defines a test protocol (exposure to a corrosive environment), not an instrumental technique.
The analysis of the resulting corrosion can then be performed using tools such as metallography, optical microscopy, or scanning electron microscopy (SEM).
The test is primarily applicable to stainless steels:
- austenitic,
- ferritic,
- stabilized or unstabilized,
- used in corrosive or demanding environments.
The material is:
- Prepared in test specimen form,
- Immersed in a corrosive solution defined by the standard,
- Rinsed and examined after exposure for signs of intergranular attack.
ISO 3651-1: Immersion test for austenitic and ferritic stainless steels.
ISO 3651-2: Electrochemical test (DL-EPR method) for detecting corrosion sensitization.
