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DC TIG: outputs DC current, suited to steel, stainless steel, copper, brass, titanium, and most non-aluminium metals. Cheaper, simpler, and lighter than AC/DC. Sufficient for the majority of fabrication work. AC/DC TIG: switches between DC (for non-aluminium) and AC (for aluminium and magnesium — the AC half-cycle breaks up the aluminium oxide layer that DC cannot penetrate). More expensive but essential if aluminium work is needed. Match the welder to the materials worked; for steel-only and stainless-only work, DC TIG is sufficient.

Both use DC output, but the arc-strike mechanism differs. Stick welding uses a consumable rod that is touched to the work to strike the arc; the rod is consumed and forms the filler. TIG welding uses a non-consumable tungsten electrode, with shielding gas (argon) protecting the weld pool, and a separately-fed filler rod (or no filler for fusion welds). TIG produces cleaner welds with finer control of weld-pool size and heat — preferred for thin material, stainless, and where appearance matters.

Match output to the material thickness. For thin steel and stainless (1-2mm): 50-100 amps. For medium plate (3-6mm): 100-180 amps. For thick plate (6-12mm): 180-250 amps. For heavy fabrication and aluminium (6mm+ aluminium needs much higher current than steel due to aluminium's high thermal conductivity): 250-320+ amps for aluminium. Aluminium TIG typically needs 1 amp per 0.025mm of thickness as a rule of thumb. The rated current and duty cycle are listed on every welder product page.

Pulse-mode TIG cycles the welding current rapidly between a high pulse current (for penetration) and a low background current (for arc maintenance and pool cooling) — typical pulse rates 0.5-200 Hz adjustable. Benefits: better control of weld-pool size on thin material (preventing burn-through), better heat-input control on heat-sensitive materials (stainless, exotic alloys), and improved weld appearance. Worth the additional cost on welders used for fine work, thin stainless, and food-grade stainless fabrication where weld appearance matters.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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Tig Welder

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Within Welding Machines, TIG Welder covers the gas-tungsten-arc (GTAW) welding machines used in workshop and fabrication work where weld quality, appearance, and metallurgical control matter — covering inverter-based DC TIG welders (for steel, stainless steel, and copper alloys), AC/DC TIG welders (with the AC output needed for aluminium and magnesium), and the wider TIG welder range used in cabinet-making, food-and-beverage stainless work, motorsport fabrication, and precision welding applications.

Parts for Machines supplies TIG welders across the trade and professional ranges, with rated current outputs typically running from 160 amps (compact bench TIG welders for light fabrication) up to 320+ amps (heavy industrial TIG welders for thick stainless and aluminium fabrication).

We are an authorised distributor and seller of Sealey, SIP, and Clarke across the TIG welder range. Sealey and SIP cover the broadest selection — DC TIG welders for steel and stainless work, AC/DC TIG welders with the AC output needed for aluminium and magnesium fabrication, and the matched torches, foot pedals, and consumables. Clarke extends the range with workshop and trade-grade variants.

Product pages list the welder type (DC-only for steel and non-aluminium; AC/DC for aluminium-capable), the rated current output (in amps), the duty cycle, the input voltage (230V single-phase for compact inverters; 400V three-phase for larger industrial TIG), the AC frequency adjustment (for AC TIG — controls the etching action on aluminium oxide; typical 50-200 Hz), the AC balance adjustment (for AC TIG — adjusts the cleaning vs penetration ratio), the pulse-mode capability (for fine work and thin-material welding), the foot-pedal control (allows the operator to vary current during welding), and the matched torch. Trade pricing on multi-unit orders is available; contact the team via WhatsApp 07754288583.

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FAQs

DC TIG: outputs DC current, suited to steel, stainless steel, copper, brass, titanium, and most non-aluminium metals. Cheaper, simpler, and lighter than AC/DC. Sufficient for the majority of fabrication work. AC/DC TIG: switches between DC (for non-aluminium) and AC (for aluminium and magnesium — the AC half-cycle breaks up the aluminium oxide layer that DC cannot penetrate). More expensive but essential if aluminium work is needed. Match the welder to the materials worked; for steel-only and stainless-only work, DC TIG is sufficient.

Both use DC output, but the arc-strike mechanism differs. Stick welding uses a consumable rod that is touched to the work to strike the arc; the rod is consumed and forms the filler. TIG welding uses a non-consumable tungsten electrode, with shielding gas (argon) protecting the weld pool, and a separately-fed filler rod (or no filler for fusion welds). TIG produces cleaner welds with finer control of weld-pool size and heat — preferred for thin material, stainless, and where appearance matters.

Match output to the material thickness. For thin steel and stainless (1-2mm): 50-100 amps. For medium plate (3-6mm): 100-180 amps. For thick plate (6-12mm): 180-250 amps. For heavy fabrication and aluminium (6mm+ aluminium needs much higher current than steel due to aluminium's high thermal conductivity): 250-320+ amps for aluminium. Aluminium TIG typically needs 1 amp per 0.025mm of thickness as a rule of thumb. The rated current and duty cycle are listed on every welder product page.

Pulse-mode TIG cycles the welding current rapidly between a high pulse current (for penetration) and a low background current (for arc maintenance and pool cooling) — typical pulse rates 0.5-200 Hz adjustable. Benefits: better control of weld-pool size on thin material (preventing burn-through), better heat-input control on heat-sensitive materials (stainless, exotic alloys), and improved weld appearance. Worth the additional cost on welders used for fine work, thin stainless, and food-grade stainless fabrication where weld appearance matters.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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