3.0mm Diameter AZ31B Magnesium Alloy Welding Wire 1000mm Straight Length for Aerospace Plate Structural Fabrication

AZ31B straight-cut magnesium filler wire in 3.0 mm diameter, supplied in 1000 mm rods for TIG welding of thicker magnesium plate, forgings and extrusions in aerospace and high-responsibility structural work. The larger diameter carries the current needed for full penetration on 6 to 20 mm sections and holds a stable arc during long welds, while the AZ31B chemistry preserves ductility and impact toughness in the joint.

• AZ31B Grade
• 3.0 mm Diameter
• Straight Cut 1000 mm
• TIG / GTAW
• Vacuum Packed

• 3.0 mm diameter supports 140 to 200 A welding current for full penetration on 6 to 20 mm plate.
• Ductile AZ31B deposit with 12 to 15 percent elongation, which suits structures loaded in fatigue.
• Low porosity, achieved by vacuum-degassed melting and a dry, oxide-free rod surface.
• Consistent diameter and straightness keep the arc stable through long continuous structural welds.
• Heat number and mill test certificate available for each lot to support incoming inspection.
• Rods packed in sealed foil so moisture pickup stays negligible even after long storage.

Chemistry is verified on every heat and reported against the AZ31B designation requirements of ASTM B90/B90M and GB/T 5153. A mill test certificate (EN 10204 3.1) is issued per lot on request.

Straight-cut rods are supplied in 1000 mm length as standard; 500 mm and 36 in (914 mm) cut lengths are available on request. Surface is bright, scale-free and free of drawing lubricant residue.

• TIG welding of AZ31B magnesium plate and forged fittings for aerospace ground and airframe structures.
• Fabrication of magnesium structural frames, ribs and brackets in aviation test hardware.
• Welding of thick-section magnesium plate for instrumentation housings and satellite ground equipment.
• Repair of magnesium structural components in overhaul and maintenance facilities.
• Heavy-section magnesium fabrication for transport and industrial equipment.

Magnesium is welded in AC mode to break down the refractory surface oxide. A clean, freshly brushed joint, argon shielding and a short arc length give the most stable results. Keep filler rods in the sealed bag until the moment of use, and store opened bundles in a dry cabinet.

• Straight rods bundled in 1 kg, 2 kg or 5 kg lots, wrapped in VCI paper, sealed in an aluminium foil vacuum bag with desiccant, then packed in a rigid tube or plywood case.
• Net weight per case 20 to 25 kg. Custom bundles, printed labels and neutral packing are available.
• Stock sizes ship in 7 to 10 working days; custom diameters and cut lengths in 15 to 20 working days.
• Diameters 1.2 mm to 3.0 mm are held in regular production, so mixed-size orders can be consolidated into one shipment.

• ISO 9001:2015 controlled production from billet extrusion to final drawing and packing.
• Diameter, ovality, straightness, surface and chemistry are inspected lot by lot; spark and XRF checks are recorded.
• OEM service: customer brand printed on label and case, custom cut length, custom bundle weight.
• Sample orders from 20 kg are accepted so the filler can be trialled on your own joint configuration before volume purchase.

Please confirm grade, diameter, straight-cut length, bundle weight and estimated annual quantity when sending an inquiry. We will reply with the matching technical data sheet and the current price per kg.