Surface preparation

Xylan coatings (or any thin-film coating) cannot by themselves provide complete corrosion protection. For maximum performance, primers or pretreatments are required.

Types of corrosion-mitigating coatings

These fall into three common categories: barrier, inhibitive and sacrificial.

• A barriercoating stands between the metal fastener and the environment. This is usually an organic coating with fillers that help stop moisture or vapor from permeating the film to the metal and becoming an electrolyte.
• An inhibitive coating is usually an organic coating with corrosion inhibitors, such as zinc phosphates, and chromates. In addition to acting as barriers, they help prevent corrosion by using pigments that provide an inhibitive effect, reacting with the absorbed moisture in the coating, then reacting with the steel to passivate it and decrease its corrosive characteristics.
• A sacrificial coating is usually a metal or inorganic coating containing metal particles (oFen zinc). If the coating is damaged, they act as a sacrificial anode and corrode to protect the steel substrate, sacrificing themselves by galvanic action. These can also be electroplated like zinc or cadmium.

Zinc Electroplating

Zinc electroplating line provides quick turnaround and cost-effectiveness for your plated bolt requirements.

Our zinc plating process, with clear trivalent conversion, offers:

• Hexavalent Chrome Free processing eliminates the toxic chemicals found in yellow chromate.
• Excellent Corrosion Resistance—Exceeding that of yellow chromate, and achieving 200-400 hours to white corrosion in ASTM B-117 Salt Spray.
• Increased Temperature Tolerance to 300-400°F for many hours with no effect on corrosion resistance or color.
• Cost-Effective - This new clear chromate costs no more than yellow chromate.

Xylan®Overview

Xylan has long been the benchmark of our line of industrial coatings. Registered in most countries around the world, Xylan is used to identify our low-friction, wear-resistant composites of fluoropolymers and reinforcing binder resins.

They are first and foremost dry-film lubricants; however, they have many desirable secondary properties. These lubricants are combined in a matrix with the newest high-temperature organic polymers resulting in “plastic alloys” formulated to provide unique and desirable properties. They can “work” under heavy loads, at high temperatures, in chemical and corrosive environments, and combinations thereof. In the industrial world, they are known as “extreme performance coatings.”

Xylan 1070

Xylan 1070 general purpose coatings were the first Xylan fastener coatings, introduced in the mid-1970s and still going strong. They provide outstanding lubrication for predictable makeup and break-out torque, and they have outstanding chemical resistance.

Temperature Range: -425°F (-255°C) to 550°F (290°C) continuously.

Xylan 1070 has added corrosion inhibitors.

Xylan 1424

Xylan 1424 is the environmentally friendlier version of the 1000 series coatings. Xylan 1424 series coating can be made in any color, including white. They also have better chemical resistance to bases than the 1000 series.

Xylan 1424 series reaches complete cure at 400°F (205°C), ideal for most coating operations.

Xylan 1424 series coatings work best for onetime installations, where the fastener will be coated, installed, and let alone.

Temperature Range: -40°F (-40°C) to 350°F (175°C).

STUDS

STUDS NOTES

1. To meet the tensile requirements, the Brinell hardness shall be over 200 HB (93 HRB).
2. Class 1 is solution-treated. Class 2 is solution-treated and strain-hardened. Austenitic steels in the strain-hardened condition may not show uniform properties throughout the section particularly in sizes over 3/4” in diameter.
3. For sizes 3/4” in diameter and smaller, a maximum hardness of 241 HB (100 HRB) is permitted.
4. To meet the tensile requirements, the Brinell hardness shall not be less than 200 HB or 93 HRB.

NUTS