Intergranular Corrosion Detection Of Austenitic Stainless Steel
Suitable for various austenitic stainless steel materials such as 304, 304L, 321, 316, 316L, 310S, etc.
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Product Introduction

Detection range
Applicable materials: Suitable for various austenitic stainless steel materials such as 304, 304L, 321, 316, 316L, 310S, etc.
Applicable objects: covering austenitic stainless steel plates, bars, pipes, profiles, forgings, welded joints, flanges, fittings, pressure vessels, chemical equipment, and related structural components.
Applicable scenarios: Suitable for intergranular corrosion sensitivity testing and quality assessment of austenitic stainless steel after welding, sensitization treatment, solution treatment, and high-temperature service.
Testing purpose: Used for evaluating the intergranular corrosion resistance of austenitic stainless steel, verifying welding processes, evaluating heat treatment processes, product quality acceptance, failure analysis, and engineering material selection.
Testing items
Sensitivity assessment of intergranular corrosion: Evaluate whether the sample undergoes intergranular corrosion in a standard corrosive medium.
Corrosion morphology detection: Macroscopic observation of corrosion status, microscopic examination of grain boundary corrosion characteristics, depth, and extension range.
Bending test detection: After corrosion, the sample is bent to check for intergranular corrosion cracks on the surface.
Special testing of welded joints: detecting the intergranular corrosion tendency of welds and heat affected zones.
Comparative detection of sensitized and solid solution states: Compare the differences in intergranular corrosion sensitivity of materials in different heat treatment states.
Assessment of intergranular corrosion level: Divide the degree of intergranular corrosion into corresponding levels according to standards.

Testing Standards
GB/T 4334-2020 Corrosion of metals and alloys - Test method for intergranular corrosion of stainless steel
ASTM A262-2023 Test Method for intergranular corrosion of austenitic stainless steel and nickel based alloys
ISO 3651-1:2017 Corrosion of metals and alloys - Test method for intergranular corrosion of austenitic stainless steel
was established in 2011. As a national high-tech enterprise recognized by the Zhejiang Provincial Higher People's Court as a judicial authentication institution for construction engineering quality, we specialize in structural performance testing and safety assessment of construction projects, special equipment, communication towers, electromagnetic environments, large bridges, and building safety appraisal.
The company has more than 100 professional and technical personnel, over 90% of whom hold various medium and senior technical certificates. Equipped with complete testing equipment worth over RMB 10 million, our business scope covers the whole country.





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