Based on which hardener you choose, it cures at a wide range of temperatures. When applying heat to cure epoxy, don’t exceed 140°F (60°C). This can help the resin and hardener complete their cross-linking. For group size "E" and larger sizes, we suggest use of either the 306-23 Special Purpose Resin/Hardener pump (Model 128845), which dispenses hardener and 105 Epoxy Resin at a ratio of 3:1, or the 306-25 Special Purpose Resin/Hardener pump (Model 335703), which dispenses hardener and 105 Epoxy Resin at a ratio of 5:1. 205 Fast Hardener is a medium-viscosity epoxy curing agent. When working with cold epoxy, give the pump head much more time to return to the top of the stroke. 105 System . Leave clamps in place until the epoxy has cooled. 205 standard hardener is used in the majority of situations to produce a rapid cure. West System 205 Fast Hardener is a medium-viscosity epoxy curing agent. It is a clear, pale yellow, low-viscosity liquid epoxy resin. Pre-warmed resins and hardeners will not cling as much to your mixing equipment. 205 Fast Hardener is a medium-viscosity epoxy curing agent. Mix with West System Resin in a five part resin to one part hardener ratio. Product Overview. Read more about Cold-Temperature Bonding in Epoxy Basics, or at Epoxyworks. Bay City, MI 48707 . The West System 205 Fast Hardener is formulated to cure well at temperatures as low as 40-degree-F Mix it with WEST SYSTEM 105 Resin in a five-part resin to one-part hardener ratio. 205 Fast, 206 Slow and 209 Extra Slow Hardeners when mixed with 105 Epoxy Resin work well for wetting out porous surfaces before bonding with thickened epoxy. They’ll also blend more easily, ensuring thorough mixing. WEST SYSTEM 105-205 cured resin/hardener mixture yields a high-strength, rigid solid which has excellent cohesive properties and provides an outstanding moisture vapour barrier with excellent bonding & coating properties. 205 Fast Hardener produces a rapid epoxy cure that develops physical properties quickly at room temperature. 205 Fast Hardener is a medium-viscosity epoxy curing agent. When coating at cold temperatures, the slower cure can result in a waxy/greasy film on the surface of the cured epoxy, called amine blush. 105 A-Size Epoxy Resin (Model 323733, shown above) should be paired with an A-size container of 205, 206, 207 or 209 Hardener. Mix with one of four WEST SYSTEM Hardeners. Blended with a hardener at the proper ratio, it cures to a hard, solid plastic with great physical properties. 3. It is formulated without volatile solvents and does not shrink after curing. 205 Fast Hardener is a medium-viscosity epoxy curing agent. You can change your cookie settings through your browser.To learn more about cookies, please see our Privacy policy. 866-937-8797 . 1. westsystem.com . Final cure time depends on the hardener speed and the temperature the epoxy is exposed to. The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. Mix it with WEST SYSTEM 105 Resin in a Choose the right hardener to control the cure time of 105 Epoxy Resin at the temperature at which you will work. Three hardeners are offered: 205 Fast, 206 Slow, 209 Extra Slow and 207 Special Clear Hardener. We’ve formulated 205 Fast Hardener to cure well at temperatures as low as 40°F (4°C). Use a mixing stick shaped to reach the pot’s corners. As an adhesive, 105 mixtures will bridge gaps and fill voids when mixed with West System fillers and can be sanded and shaped when cured. #205 Fast Hardener, mixed at a 5:1 ratio with #105 Resin, results in a pot life of 9-12 minutes at 72°F, with solid cure in 6-8 hours. Spring-Fitting-Out-Checklist Articles Page, 6 to 8 Hours (Working Time 60-70 Minutes) at 72 F. This is because a small pot has less surface area, which prevents heat from dissipating too quickly. We use cookies to optimize site functionality and improve your overall experience. First time users If this is the first time you have used WEST SYSTEM epoxy, begin with a small batch test to get the feel for the mixing and curing process, before applying the mixture to your project. The cure rate of 105 Epoxy Resin can be adjusted to ambient temperature and desired working time. Allow the epoxy additional time to cure before you remove clamps or stress the joints. Let the mixed epoxy sit in the pot a little longer before applying. These hardeners are also a good choice for barrier coating, where multiple coats of epoxy create moisture protection. When mixed with the 105 Resin in a fiv Elevate the temperature of the partially cured epoxy. Call our Technical Staff toll-free: 866-937-8797 (Weekdays 9:00 AM to 5:00 PM EST), Outside of the U.S.A., call 1-989-684-7286. The 205 Fast Hardener is a medium viscosity epoxy curing agent for West System 105 Epoxy Resin. Add one of six WEST SYSTEM fillers to thicken the mixture as needed. When used with the Clear 207 hardener, the ratio is 3 parts resin to 1 part hardener. It is a clear, pale yellow, low-viscosity liquid epoxy resin. This will increase the chemical reaction between resin and hardener. Box 908 . WEST SYSTEM 105/205 6 Kg B pack Stadard hardener. The combination of 105 Resin/205 Fast Hardener has excellent bonding and coating properties. Estimating Epoxy Coverage for Fabric Application, Fiberglass Boat Repair & Maintenance (pdf), Common Mistakes in Fiberglass Repair (Webinar), The Gougeon Brothers On Boat Construction book, Health Effects from Overexposure to Epoxy, Call from outside the U.S.A. 1-989-684-7286, Always dispense 105 Resin and 205 Fast Hardener at the proper mixing ratio. When used with 105 Resin, the cured mixture yields a high-strength, rigid solid which has excellent cohesive properties and provides an outstanding moisture vapour barrier with excellent bonding & coating properties. West System 105 Resin / 205 Hardener – TDS West System 205 Fast Hardener – SDS. Only logged in customers who have purchased this product may leave a review. 209 Extra Slow and 207 Special Clear Hardeners when mixed with 105 Epoxy Resin work well for clear fabric application, such as applying fabrics to wooden surface, where a clear, natural finish is desired. There are several things you can do to ensure a full cure when using epoxy in low temperatures. 300 Mini Pump Kit for group size A, B or C. When autocomplete results are available use up and down arrows to review and enter to select. The resulting cured epoxy is a rigid, high-strength, moisture-resistant solid. Remember, cold epoxy resin and hardener are thicker and more difficult to pump. Generally, higher temperatures require shorter cure times. Formulated for use with WEST SYSTEM hardeners, it can be cured in a wide temperature range to form a high-strength solid with excellent moisture resistance 205 FAST HARDENER A medium-viscosity epoxy curing agent, it is used in a majority of situations, at lower temperatures, and to produce a rapid cure that develops its physical properties quickly at room temperature. October, 2014 . West System 2 part epoxy is available in 300g Mini pack, 600g Junior pack, 1.2kg A pack or 6.0kg B pack and is an excellent adhesive for maximum strength. To prevent thermal shock, elevate the temperature of the epoxied surface. Select a hardener for its intended use and for the cure speed best suited for your job in the temperature range in which you are working. The resulting cured epoxy is a rigid, high-strength, moisture-resistant solid. 205 Fast Hardener is not intended for clear coating. Don’t use rags, because they can contaminate the surface with laundry softeners and anti-cling ingredients. As a general rule. A warmer, lower-viscosity mixture flows smoothly during application and readily penetrates porous surfaces. 205 Fast Hardener is used, in the majority of situations, at lower temperatures to produce a rapid cure that develops its physical properties quickly at room temperature. Time to cure well at temperatures as low as 40°F ( 4°C.... Resin at the proper ratio with a hardener at the temperature at which you will work between Resin hardener... 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