{"title":"Lincoln Square Wave TIG Welders","description":"\u003cp\u003eShop the Lincoln Square Wave TIG family — portable AC\/DC TIG welders built for aluminum, stainless, and steel work in shops, schools, and home garages. The Square Wave TIG 200 and 205 deliver pulse, push-button start, and 200-amp output in a 50-pound portable package, making them the industry'’s most popular entry-level TIG machines.\u003c\/p\u003e","products":[{"product_id":"lincoln-square-wave-205-tig-welder-k5613-1","title":"Lincoln Square Wave 205 TIG Welder- K5613-1","description":"\u003cp\u003e\u003cstrong\u003eThe Lincoln Square Wave 205 represents a revolutionary advancement in TIG welding technology, combining professional-grade capabilities with unprecedented user accessibility in a compact, portable package\u003c\/strong\u003e. This versatile AC\/DC TIG welder delivers exceptional arc performance across aluminum, stainless steel, mild steel, and specialty alloys, making it the perfect solution for automotive restoration, fabrication shops, maintenance operations, and serious hobbyists who demand precision and control in their welding projects. The intuitive 4.3-inch LCD digital interface transforms the user experience, providing clear visual guidance and simplified navigation through welding parameters, eliminating the complexity traditionally associated with TIG welding setup and allowing both novice and experienced welders to achieve professional results with minimal learning curve.\u003c\/p\u003e\n\u003cp\u003eEngineered for maximum versatility, the Square Wave 205 excels in both AC and DC TIG applications, as well as delivering exceptional stick welding performance with outstanding characteristics for both E6010 and E7018 electrodes. This comprehensive process capability allows users to tackle virtually any welding project without investing in multiple machines, creating exceptional value for small fabrication shops, maintenance departments, and serious DIY enthusiasts. The system's advanced parameter control includes adjustable pulse, AC frequency, and AC balance settings that provide precise arc control for specialized applications, from thin-gauge aluminum to heavy structural steel, ensuring optimal results regardless of material type or thickness.\u003c\/p\u003e\n\u003cp\u003eThe Square Wave 205's innovative dual voltage input capability automatically adapts to either 120V or 230V power sources without manual reconfiguration, allowing seamless transition between home garages, workshops, and jobsites with varying power availability. This intelligent power management system maximizes output performance based on available input power while protecting internal components from voltage-related damage, creating a truly portable welding solution that delivers consistent results regardless of location. The lightweight design, weighing just 36 pounds, features ergonomic front handles and a balanced weight distribution that enhances portability without sacrificing durability or performance capabilities.\u003c\/p\u003e\n\u003cp\u003eDurability and reliability define the Square Wave 205's construction, with an IP21S environmental rating that ensures protection against dust ingress and water dripping, allowing confident operation in various workshop and field conditions. The robust internal components are engineered to withstand the rigors of daily use in both professional and enthusiast environments, while the thoughtful thermal management system prevents overheating during extended welding sessions. The integrated storage compartment provides convenient organization for consumables, torch parts, and accessories, creating a complete, self-contained welding solution that maintains workshop organization while facilitating easy transportation between locations.\u003c\/p\u003e\n\u003cp\u003eLincoln Electric's commitment to welding excellence is evident in the Square Wave 205's exceptional arc characteristics, which provide stable, smooth performance even in challenging applications like thin aluminum or out-of-position welding. The precise arc starting capabilities minimize tungsten contamination and workpiece distortion, while the responsive arc control allows for accurate heat input management when working with heat-sensitive materials or precision components. With its combination of professional-grade performance, user-friendly interface, and portable design, the Square Wave 205 establishes a new benchmark for accessible TIG welding technology, empowering welders of all skill levels to achieve exceptional results across diverse applications and materials.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSimple User Interface - bright 4.3\" LCD display that makes setup intuitive and easy.\u003c\/li\u003e\n\u003cli\u003eAC\/DC TIG and AC\/DC Stick Capabilities - optimized processes for a variety of materials and applications with excellent E6010 and E7018 performance.\u003c\/li\u003e\n\u003cli\u003eAdvanced Features - pulse, AC frequency, and AC balance to provide control no matter the material and application.\u003c\/li\u003e\n\u003cli\u003eRobust Design - Durable design, IP21S rated, for optimal performance in a wide range of environments and conditions.\u003c\/li\u003e\n\u003cli\u003eLightweight and Portable - only 36 lbs. with ergonomic front handles and an integrated storage compartment to make transportation easy.\u003c\/li\u003e\n\u003cli\u003eDual Input Voltage - 120V and 230V inputs so you can plug into any common power supply.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"section-header\"\u003e\u003cstrong\u003eProduct Weights \u0026amp; Dimensions\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd\u003e14.7 in x 10.2 in x 19.9 in (373 mm x 259 mm x 505 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e36 lbs (16.3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"section-header\"\u003e\u003cstrong\u003eGeneral Specification\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMachines Processes\u003c\/td\u003e\n\u003ctd\u003eStick (SMAW)\u003cbr\u003eTIG (GTAW)\u003cbr\u003eAC TIG (GTAW)\u003cbr\u003eDC TIG (GTAW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120\/230V, 1-Phase, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e120V: 25A\u003cbr\u003e230V: 22A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Range\u003c\/td\u003e\n\u003ctd\u003eTIG:\u003cbr\u003e120V: 5-125A\u003cbr\u003e230V: 5-205A\u003cbr\u003e\u003cbr\u003eStick:\u003cbr\u003e120V: 5-90A\u003cbr\u003e230V: 5-170A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Output\u003c\/td\u003e\n\u003ctd\u003eTIG:\u003cbr\u003e120V: 90A\/13.6V\/30%\u003cbr\u003e230V: 205A\/18.2V\/25%\u003cbr\u003e\u003cbr\u003eStick:\u003cbr\u003e120V: 80A\/23.2V\/30%\u003cbr\u003e230V: 170A\/26.8V\/25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"section-header\"\u003e\u003cstrong\u003eMachine Technologies \u0026amp; Connections\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003e4.3\" Color LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Frequency Start\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse\u003c\/td\u003e\n\u003ctd\u003e0.1-500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Frequency\u003c\/td\u003e\n\u003ctd\u003e60-150 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Balance\u003c\/td\u003e\n\u003ctd\u003e60-90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWork Lead Connector Type\u003c\/td\u003e\n\u003ctd\u003eDinse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"section-header\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Application\u003c\/td\u003e\n\u003ctd\u003eAutomotive Repair\u003cbr\u003eFabrication\u003cbr\u003eMaintenance \u0026amp; Repair\u003cbr\u003eHome\/Hobby\u003cbr\u003eMetal Art\u003cbr\u003eEducation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"section-header\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/div\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cstyle\u003e\n.specs-table {\n  width: 100%;\n  border-collapse: collapse;\n  font-family: Arial, sans-serif;\n}\n.specs-table tr:nth-child(odd) {\n  background-color: #f5f5f5;\n}\n.specs-table td {\n  padding: 10px;\n  border-bottom: 1px solid #ddd;\n}\n.specs-table td:first-child {\n  width: 30%;\n}\n.section-header {\n  font-size: 18px;\n  font-weight: bold;\n  padding: 20px 0 10px 0;\n}\nh2 {\n  font-size: 24px;\n  margin-bottom: 20px;\n}\n\u003c\/style\u003e","brand":"Lincoln Electric","offers":[{"title":"Default Title","offer_id":45322085499031,"sku":"K5613-1","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/k5613-1DBD.png?v=1757890661"},{"product_id":"lincoln-square-wave-tig-200-ac-dc-tig-welder","title":"Lincoln Square Wave TIG 200 AC\/DC TIG Welder","description":"\u003cp\u003eThe Lincoln Electric Lincoln Square Wave TIG 200 AC\/DC TIG Welder is a versatile, inverter-based AC\/DC TIG (GTAW) and Stick (SMAW) welding machine designed for precision welding on aluminum, stainless steel, carbon steel, and other common alloys. Engineered for portability without sacrificing capability, the Square Wave TIG 200 is well-suited for motorsports fabricators, aerospace maintenance technicians, artists, and professional welders who need a capable TIG machine in a compact, dual-voltage package.\u003c\/p\u003e\n\u003cp\u003eThe Square Wave TIG 200 features independently adjustable AC frequency and AC balance for optimized aluminum welding performance, enabling operators to tune arc width, cleaning action, and penetration profile for varying aluminum alloys and material thicknesses. High-frequency arc start provides reliable, contamination-free tungsten ignition for code-quality TIG welds. The \u003cstrong\u003eU5126-1\u003c\/strong\u003e factory demo model is inspected and certified by Lincoln Electric and available at a reduced price.\u003c\/p\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eK5126-1\u003c\/strong\u003e – Square Wave TIG 200 TIG Welder - Versatile Portable Welding Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eU5126-1\u003c\/strong\u003e – SquareWave TIG 200 TIG Welder Machine Factory Demo Welder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAC\/DC TIG (GTAW) and Stick (SMAW) welding capability in a single portable machine\u003c\/li\u003e\n\u003cli\u003eUp to 200 amps output supporting aluminum, stainless steel, and carbon steel\u003c\/li\u003e\n\u003cli\u003eAdjustable AC frequency for arc focus control on aluminum welding applications\u003c\/li\u003e\n\u003cli\u003eAC balance control optimizes cleaning action versus penetration for varying aluminum alloys\u003c\/li\u003e\n\u003cli\u003eHigh-frequency arc start provides clean, contamination-free tungsten ignition\u003c\/li\u003e\n\u003cli\u003eDual-voltage input (120V\/230V) for deployment in shops, garages, and field locations\u003c\/li\u003e\n\u003cli\u003ePulse control for improved heat management on thin materials and out-of-position welds\u003c\/li\u003e\n\u003cli\u003eLightweight inverter design for portability between workstations and job sites\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAluminum chassis, roll cage, and suspension component welding in motorsports fabrication\u003c\/li\u003e\n\u003cli\u003eStainless steel food-service equipment and pharmaceutical vessel welding\u003c\/li\u003e\n\u003cli\u003eAerospace component repair and maintenance TIG welding\u003c\/li\u003e\n\u003cli\u003eArtistic metalwork, sculpture, and custom fabrication on thin-gauge alloys\u003c\/li\u003e\n\u003cli\u003eTechnical training and vocational TIG welding education\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Lincoln Electric Lincoln Square Wave TIG 200 AC\/DC TIG Welder\u003c\/h2\u003e\n\u003cp\u003eThe Lincoln Square Wave TIG 200 combines AC\/DC TIG capability, dual-voltage flexibility, and a precision inverter arc into one of the most portable and capable TIG machines in its class. Whether you choose the new unit or the factory-certified demo model, both deliver the arc quality, AC balance control, and reliable high-frequency start that professionals demand for aluminum and stainless steel TIG welding work.\u003c\/p\u003e","brand":"Lincoln Electric","offers":[{"title":"Factory Reconditioned","offer_id":43638620651671,"sku":"U5126-1","price":2199.0,"currency_code":"USD","in_stock":false},{"title":"Base Model","offer_id":43638436724887,"sku":"K5126-1","price":2264.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7140\/4695\/files\/U5126-1_1.png?v=1765590008"}],"url":"https:\/\/weldingmart.com\/collections\/lincoln-square-wave-tig-welders.oembed","provider":"WeldingMart.com","version":"1.0","type":"link"}