Eco-friendly
Chromium-free coated hot-dip galvannealed steel
Products with low pollution
With reference to RoHS 2011/65/EU Annex II and its revised directive (EU) 2015/863, the third-party testing institutions accredited by TAF (Taiwan Accreditation Foundation) use the IEC 62321-7-1 method to analyze hexavalent chromium and other hazardous substances. The third-party testing institution tested the samples and chemicals of "chromium-free passivated galvannealed steel sheet" and "chromium passivated galvannealed steel sheet" respectively. The results confirmed that no hexavalent chromium or other harmful substances were detected in the chromium-free galvannealed steel sheet and its solution. This indicates that the eco-friendly process of chromium-free galvannealed steel coils not only meets product quality requirements, but also has the advantage of protecting the environment and meets the environmental demands of "low-pollution products".
Test reports of chromium-free passivated galvanized iron alloy steel coils
The ability to extend the life time
Compared with chromium passivated hot-dip galvannealed steel sheet, chromium-free passivated hot-dip galvannealed steel sheet has good corrosion resistance and has a longer life time. Our company conducts 75~480 hours of neutral salt spray test according to CNS8886/ASTM B-117 standard, and conducts surface corrosion grade evaluation according to ASTM D610 to observe the percentage of rust area produced by "chromium-free passivated galvannealed steel sheet" and "chromium passivated galvannealed steel sheet" over a long period of time. After a 480-hour salt spray test, it was found that chromium-free passivated galvannealed steel sheet produced white rust and red rust later than chromium passivated galvannealed steel sheet, which is sufficient to prove that "chromium-free passivated galvannealed steel sheet" has a longer life time.
It takes 240 to 360 hours for chromium-free passivated hot-dip galvannealed steel sheet to produce red rust. Compared with chromium passivated hot-dip galvannealed steel sheet which red rust occurs in 120 to 168 hours, it indicates that the chromium-free passivated hot-dip galvannealed steel sheet has a longer life time. For detailed test reports, please refer to Appendix 2-1 to 2-3.
Salt spray test report for C1GI and G6GI
Chromium-free coated hot-dip galvanized coils
Products with low pollution
With reference to RoHS 2011/65/EU Annex II and its revised directive (EU) 2015/863, the third-party testing institutions accredited by TAF (Taiwan Accreditation Foundation) use the IEC 62321-7-1 method to analyze hexavalent chromium and other hazardous substances. The third-party testing institution tested the samples and chemicals of "chromium-free passivated steel sheet" and "chromium passivated steel sheet" respectively. The results confirmed that no hexavalent chromium or other harmful substances were detected in the chromium-free steel sheet and its solution. This indicates that the eco-friendly process of chromium-free steel coils not only meets product quality requirements, but also has the advantage of protecting the environment and meets the environmental demands of "low-pollution products".
Test reports of G6GI steel coils
The ability to extend the life time
Compared with chromium passivated hot-dip steel sheet, chromium-free coated hot-dip galvanized coils has good corrosion resistance and has a longer life time. Our company conducts 75~480 hours of neutral salt spray test according to CNS8886/ASTM B-117 standard, and conducts surface corrosion grade evaluation according to ASTM D610 to observe the percentage of rust area produced by "chromium-free passivated steel sheet" and "chromium passivated steel sheet" over a long period of time. After a 480-hour salt spray test, it was found that chromium-free passivated steel sheet produced white rust and red rust later than chromium passivated steel sheet, which is sufficient to prove that "chromium-free passivated steel sheet" has a longer life time.
No red rust was observed on the chromium-free coated hot-dip galvanized coilswithin 360 hours. Compared with chromium passivated hot-dip steel sheet which red rust occurs in 240 to 360 hours, it indicates that the chromium-free coated hot-dip galvanized coilshas a longer life time. For detailed test reports, please refer to TEST REPORT 2 to 3.
Salt spray test repot for C1GI and G6GI
