Is clear chromate RoHS compliant?

The RoHS Directive restricts hexavalent chromium, but does not restrict less hazardous trivalent chromium. Historically, both clear and yellow chromate conversion coatings contained hexavalent chromium compounds. Therefore all -ZI product plated after June 2002 is RoHS compliant.

Is trivalent chromate RoHS compliant?

The Trivalent Chromium Process (TCP) provides a non hexavalent chromate conversion coating compliant with RoHS, ELV and WEEE directives.

Is zinc dichromate RoHS compliant?

Dichromate is Cr2O7-2. The chromium is in hexavalent state and is forbidden by RoHS. However, RoHS-compliant “chromates” are widely available (I put “chromate” is quotes because they are called trivalent chromate but are not really “chromate” because that is chemically CrO4-2).

Is chromate banned?

The hexavalent chromate compound used in paints for vehicle servicing was banned in January 2019 under the Registration, Evaluation, Authorisation and Restriction of Chemicals regulations.

Which is better zinc or stainless steel?

Choosing Between Zinc Alloys and Stainless Steel Though some Zinc alloys can be very strong, overall stainless steel is stronger. However, zinc is a heavy element, and when alloyed with other metals it provides better corrosion resistance, stability, dimensional strength and impact strength.

What is the difference between zinc yellow and zinc clear?

Yellow zinc is most commonly used for automotive parts because it provides a good level of corrosion resistance. Blue or clear zinc plating provides the least amount of corrosion resistance. Acid zinc coating adds brightness to objects, improving the item aesthetically while protecting them from damage.

Is zinc chromate banned?

Zinc Chromate is not banned, however, the use of the material is highly restricted. The component that is of concern is the chromate, which contains hexavalent chromium, or chromium-6, which is a know carcinogen.

When did PEM start using RoHS compliant chromate?

With regard to our standard zinc plated PEM brand steel fasteners, we began using a trivalent clear chromate in June of 2002 for all our product with finish suffix ZI. Therefore all -ZI product plated after June 2002 is RoHS compliant.

Are there any aluminum products that are ROHS compliant?

All of our aluminum products are RoHS compliant. All of our steel products with zinc and clear chromate finish (-ZI finish suffix) are RoHS compliant. As of June 2002, hexavalent chrome is no longer used in our clear chromate finish. All of our steel products with optional zinc and yellow plating (-ZC finish suffix) are RoHS compliant.

Is the-MD finish a RoHS compliant finish?

The -MD finish does not contain cadmium, lead or any other RoHS substance and is therefore RoHS compliant. Any product with cadmium and clear chromate finish (-CI finish suffix) contains hexavalent chromium and therefore is not RoHS compliant.

What kind of brass finishes are ROHS compliant?

Directive Compliance. Brass and phosphor bronze product is RoHS compliant unless a non-compliant finish is applied. Our standard finish of electro-plated tin with preservative coating (-ET suffix) is RoHS compliant. Although some brass product, such as type KFB3 standoffs, are machined from leaded brass barstock,…

Is clear chromate RoHS compliant? The RoHS Directive restricts hexavalent chromium, but does not restrict less hazardous trivalent chromium. Historically, both clear and yellow chromate conversion coatings contained hexavalent chromium compounds. Therefore all -ZI product plated after June 2002 is RoHS compliant. Is trivalent chromate RoHS compliant? The Trivalent Chromium Process (TCP) provides a non…