MACHINE BOLT with PTFE coated
Coatings of Xylan offer many benefits for offshore service. These include resistance to corrosion and chemical attack, superb subsea visibility, lower maintenance costs and less downtime.
Type : Stud and machine bolt
Material : B7/A325/A320/GR 8.8
Top coat : Whitford PTFE Xylan 1424
Standard : ANSI B18.1.1.
Extensive testing and field use have proven that the future of coated fastener’s lies with Fluoropolymer coatings. Previously hot dip, galvanized, cadmium or zinc plated fasteners were considered the standard. But these coatings could not stand up to the corrosive atmospheres prevalent in many industries. The most widely used application is on B7 studs with 2H nuts.
Dramatic improvements in efficiency, life expectancy and corrosion resistance are claimed to be imparted to Nut and Bolt connectors by the application of a low friction PTFE coating. PTFE coated connectors have out-performed all others in aggressive any noticeable effect.
| Specifications | ||
| Temperature | : | up to + 500°F |
| Salt Spray test | : | up to 3,000 hrs |
| Pencil Hardness | : | 5H – 6H |
| Friction Co. | : | 0.06 – 0.08 |
| Impact | : | 160 in lb |
| Adhesion | : | 5B |
| Elongation | : | 35%-50% |
| Tensile Strength | : | 4,000 psi |
Green Owner select from the Whitford’s list of Qualified Applicators for Xylan Fastener Class Coatings (Beck Crawford, Seng Heng Engineering, Chinyuan, Dan-Loc, Tri-Star). Salt spray (fog) test, minimum exposure (ASTM B117) with no more than 15 percent red rust:
| Salt spray test (ASTM B117) | |
| Xylan 1014 zinc phosphate | 500 hours |
| Xylan 1424 zinc phosphate | 1500 hours |
| Xylan 1424 zinc plating | 2500 hours |
| Xylan 1424 cadmium plating | 4000 hours |
