Jis H 8625 Pdf Jun 2026

| Feature | Class I (Superior) | Class II (General) | | :--- | :--- | :--- | | | ≥ 9 µm (often spec’d higher) | ≥ 7 µm | | Sealing Quality | Excellent (Low admittance) | Good | | CASS Test (8 hrs) | No corrosion pits after 8h | Pits allowed but limited | | Application | Coastal areas, high pollution, curtain walls | Inland, mild environments, window frames |

To verify compliance with JIS H 8625, several tests are performed:

The standard introduces the CASS Test (Copper Accelerated Acetic Acid Salt Spray) as mandatory for top-tier finishes. This is brutal. Many Western standards only require neutral salt spray (NSS). JIS H 8625 demands copper-accelerated testing to simulate severe marine/industrial environments.

The standard mandates that the anodic oxide layer must be properly sealed. The test involves: jis h 8625 pdf

The standard categorizes chromate coatings based on their appearance and the level of corrosion protection they provide. When looking through a JIS H 8625 PDF, you will find these common types:

⚠️ The PDF does not define what "architectural" means. A bicycle part or an electronic housing could theoretically claim JIS H 8625 if it passes the tests, but the standard was not designed for that.

The only 100% legitimate source for the unaltered, official PDF is the web store. | Feature | Class I (Superior) | Class

JIS H 8625 allows 5000 series (Mg) and 6000 series (Mg-Si) alloys. But 2000 series (Cu) will produce dark, flawed anodizing. Your extrusion alloy matters more than the standard.

Corrosion resistance is typically measured using the . The standard defines the minimum hours a part must withstand salt spray before showing signs of white rust. Clear coatings: ~8 to 16 hours. Yellow coatings: ~72 to 96+ hours. Olive coatings: ~150+ hours. 3. Adhesion

While a PDF of JIS H 8625 provides the technical specifics, this article breaks down the core components, applications, and quality standards defined within the document. What is JIS H 8625? JIS H 8625 demands copper-accelerated testing to simulate

Specifies methods to measure the mass of the chromate coating per unit area. This involves weighing the test piece before ( ) and after ( ) the coating is chemically removed. Testing Procedures: Qualitative & Quantitative Tests (Annex 2):

A deep olive-drab film. Offers the highest level of corrosion resistance.