Construction hardware and method of reducing corrosion thereof
A method of reducing corrosion in an article of construction hardware resulting from exposure to ACQ treated lumber and an article of construction hardware treated in accordance with such method.
1. A corrosion resistant article of construction hardware comprising:
a base article comprised of cold-formed steel construction hardware selected from the group consisting of hangers, connectors, straps, and tiedowns, the hardware configured to contact and connect a lumber member treated with ACQ and coated with a plurality of layers, the layers comprising:
zinc of at least G60 thickness chemically bonded to the cold-formed steel, the zinc having an activated surface treated with a light oil;
a moisture barrier coating applied to said zinc; and
a lubricant coating applied to said moisture barrier coating,
wherein:
the lubricant coating protects the moisture barrier from scratches and rubbing and further lubricates equipment used to stamp, bend, cut, or otherwise form the article; and
the moisture barrier coating isolates the zinc from the lumber member thereby minimizing any dissimilar metal reaction between the zinc and the ACQ treatment.
2. The article of claim 1 , wherein said moisture barrier coating is configured to adhere under conditions of manufacturing such as stamping, bending, and cutting.
3. The article of claim 2 , wherein the moisture barrier coating is an organic coating.
4. The article of claim 3 , wherein the organic coating contains between approximately 30% to approximately 32% propylene glycol monoethyl acetate.
5. The article of claim 1 , further comprising a precoat between said zinc and said moisture barrier coating.
6. The article of claim 5 , wherein said precoat is an adhesion promoter.
7. The article of claim 1 , wherein said lubricant coating is a dry film lube.