Jis H 8625 Pdf Apr 2026

⚠️ 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. 7. Comparison with Other Standards (Critical Table) | Property | JIS H 8625 Class I | ISO 7599:2018 AA10 | AAMA 611 Class I | | :--- | :--- | :--- | :--- | | Min Thickness | 9 µm | 10 µm | 18 µm | | Seal Test | Admittance (≤20 µS) | Dye spot or Admittance | Acid dissolution | | Corrosion Test | CASS 8h | NSS 336h | NSS 3,000h + CASS 24h | | Typical Lifetime | 10-15 years | 5-10 years | 20+ years | | Cost | Moderate | Low | High |

✅ In Southeast Asia, the Middle East, and Japan, contractors will only accept JIS H 8625 Class I. LEED projects often reference it as an equivalent to AAMA 611. 6. Weaknesses & Criticisms ⚠️ Complexity & Cost: Running CASS tests and admittance meters requires dedicated labs. Small anodizers cannot certify to Class I. Expect a 15-25% cost premium over generic anodizing. jis h 8625 pdf

⚠️ 9 µm (Class I) is roughly 0.35 mils. Compare to AAMA 611 which requires 10 µm (0.4 mils) or 18 µm for coastal. Some engineers argue JIS Class I is insufficient for aggressive beachfront buildings. ⚠️ The PDF does not define what "architectural" means

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. 3. The Critical Classification System | Feature | Class I (Superior) | Class II (General) | | :--- | :--- | :--- | | Min. Thickness | ≥ 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 | Comparison with Other Standards (Critical Table) | Property