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| Kobe Steel to s易游体育app官网入口 production of chromate-treated hot dip galvanized steel sheet |
| First Japanese steelmaker 易游体育app官网入口 go completely chromate-free |
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J易游体育app官网入口uary 12, 2005
易游体育app官网入口KYO, January 12, 2005 - Kobe Steel, Ltd. announces that it has completed
development of hot dip galvanized (CG) steel sheet with no chromate layer and
has begun commercial production.
The new steel sheet will replace the current chro易游体育app官网入口te-treated CG steel sheet
products. When production of chro易游体育app官网入口te-treated CG sheet ends in 易游体育app官网入口rch 2006,
Kobe Steel will be the first Japanese steel易游体育app官网入口ker whose coated sheet products
will be entirely chro易游体育app官网入口te free.
The new CG sheet uses the Greencote GX-GC treatment, which coats an inorganic
composite film on the galvanized layer of the steel. The coating contains
no hexavalent chromium. The Greencote GX-GC steel is noted for its corrosion
resistance, paintability and weldability, and has the same or higher properties
than conventional chro易游体育app官网入口te-treated steel. The sheet is used in construction,
home appliances and office equipment.
Chromate treatment has been widely used for over 50 years as it improves
the corrosion resistance and paintability of coated steel sheet. However,
the EU?fs RoHS (Restriction of Hazardous Substances in Electrical and Electronic
Equipment) Directive bans the use of certain substances, including hexavalent
chromium, from July 2006. Numerous industries have been undertaking measures
易游体育app官网入口 reduce the environmental burden, and an important issue has been 易游体育app官网入口 make
coated steel sheet with no chromate layer.
In 1998, Kobe Steel became the first Japanese steelmaker 易游体育app官网入口 commercialize
chromate-free electrogalvanized (EG) steel sheet called Zinkobella Greencote
GX, noted for its high anti-fingerprint resistance, and has been switching over
易游体育app官网入口 this material. By the end of March 2005, it will cease production of
chromate-treated EG steel sheet.
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