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While stainless steel’s corrosion resistance is well known, manufacturers can achieve the same on metal substrates with VpCIs, saving costs as a result.

Corrosion resistance equivalentCortec’s VpCI-371, for example, is a high temperature aluminum solvent-borne silicone coating that provides excellent corrosion resistance. It will dry tack free to 5B hardness in about 20 minutes at room temperature and will achieve 9H hardness after heating. This is an ideal coating for applications that will reach high temperatures because the coating is heat stable to 1200°F with prolonged heat resistance from 400-1200°F.

A manufacturer of oil coolers used the high temperature coating to reduce the high cost of using stainless steel while still maintaining corrosion resistance. The company, which manufactures hundreds of oil coolers for a major producer of heavy equipment, found corrosion at the six-month preventative maintenance check of carbon steel oil coolers which had been used inside the heavy equipment.

As a result, the manufacturer had to use more expensive stainless steel to make oil coolers that would resist corrosion. However, the use of the VpCI-371 allowed the company to make carbon steel oil coolers that would resist corrosion just as well.

Oil coolers manufactured out of carbon steel were internally coated with VpCI-371 and sent to the field for testing. At the six-month preventative maintenance check, no corrosion was found on the oil coolers. Thereafter, the heavy equipment company specified carbon steel and VpCI-371 as the materials for making future oil coolers to install in its heavy equipment. This resulted in a significant cost reduction for the oil cooler manufacturer, who was able to use a cost effective material to create oil coolers that would not corrode.

Cortec’s VpCI-371 conforms to ASTM D-2485-91: Standard Test Methods for evaluating coatings for High Temperature Service (Method A and B). The product has a heat stability to 648.89ºC, 600 hour salt spray resistance and an aluminum appearance. It boasts heat resistance from 204 to 649ºC for a prolonged period.

 

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