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The high humidity test serves to identify free iron or other anodic surface contaminants present on stainless steel. It functions as a corrosion analysis technique, assisting in the evaluation of corrosion rates in materials. During this test, the material undergoes exposure to diverse environmental factors and corrosive substances, enabling the study of corrosion’s impact on specific industrial materials.

• Purpose: Assess how your product performs under varying humidity levels.

• Method: Expose the product to controlled humidity conditions and monitor its behavior.

• Benefits: Helps identify potential corrosion, swelling, or electrical issues.

The copper sulfate test is a chemical procedure conducted to visually confirm the presence of iron (Fe) in stainless steel. It operates on the principle of an oxidation-reduction reaction, where dissolved copper ions adhere to the iron present on the surface. Application of a copper sulfate solution to the area of interest through swabbing or brushing facilitates this reaction. Upon interaction with any iron particles on the surface, the solution causes them to change to a brownish color, indicating their presence.

• Purpose: Detect the presence of unalloyed iron on stainless steel surfaces.

• Method: Apply a copper sulfate solution to the metal surface.

• Significance: Crucial for industries where metal purity and surface quality are paramount.

The salt spray test, also referred to as the salt fog test, is a widely recognized and longstanding method for corrosion assessment. It serves as a standardized technique utilized to evaluate the corrosion resistance of materials and surface coatings. This testing method creates a controlled, accelerated corrosive environment to gauge the relative corrosion resistance of coatings, substrates, or components. Parts or panels are enclosed within a chamber and subjected to continuous exposure for a specified duration, followed by assessment for corrosion resistance.

• Purpose: Assess corrosion resistance under harsh environmental conditions.

• Process: Subject the product to a salt spray or fog chamber.

• Results: Provides valuable data for product qualification and third-party validation.

The primary objective of this testing method is to assess a product’s resistance or susceptibility to corrosion. Water immersion tests play a crucial role in verifying the acceptability and quality control of coatings and substrate treatments during manufacturing processes. Through this method, the water resistance of coatings can be determined as it enables the detection of flaws, irregularities, and defects on coated specimens. By replicating various conditions conducive to corrosion within a controlled environment, water immersion testing helps to ascertain the rate at which a substance is prone to corrosion. Armed with this insight, users can make informed decisions about selecting coatings that enhance the longevity and strength of their materials.

• Purpose: Determine the water resistance of your products.

• Procedure: Immerse the product in water for a specified duration.

• Outcome: Helps assess sealing effectiveness and potential water ingress.

This test is employed to detect free iron or any anodic surface contaminants on stainless steel. The sample, representing a batch of passivated parts, is immersed in distilled water heated to 95-100°C [200-212ºF]. This temperature is maintained for at least 30 minutes, ensuring the sample remains submerged. If the container is metallic, the parts shall not make contact with it; a temperature-resistant polymeric support is recommended. After this period, the container is allowed to cool for 3 hours and 15 minutes. The sample is then removed and air-dried for 2 hours and 10 minutes. The tested sample should not show any rust or staining attributable to the presence of free iron particles.

• Purpose: Determine products’ water resistance under boiling conditions.

• Procedure: Immerse products in boiling water for a set duration.

• Outcome: Assess sealing effectiveness and susceptibility to water damage.

Passivation Spec ASTM A967-17

Our method entails thorough washing, filtration, and microscope analysis using Millipore testing. We meticulously count and size particulates to ensure they conform to customer specifications. Manufacturers rely on Millipore testing to evaluate the cleanliness of finished components, making it a critical quality control measure. This testing detects the presence of solid particles or other non-soluble contaminants, which can cause inefficiencies, safety hazards, and premature wear over the component’s lifespan. While historically prominent in the auto industry, Millipore testing is increasingly recognized and adopted by the pharmaceutical and medical sectors.

• Purpose: Evaluate the cleanliness of components and surfaces.

• Method: Measure particle contamination using a fine-pore filter.

• Application: Commonly used in pharmaceutical, semiconductor, and medical device manufacturing.