5056 aluminum wire is a high-magnesium, non-heat-treatable Al-Mg-Cr alloy supplied on spools and coils for welding filler, rivets, fasteners and marine applications. With magnesium content higher than 5356 and excellent resistance to seawater corrosion, 5056 wire is the preferred choice for welding magnesium-rich 5xxx base alloys and for service in harsh, chloride-bearing environments. Linsy produces 5056 wire in O, H32, H34 and H111 tempers with custom diameters, controlled surface quality and full mill certification.
Formularios disponibles: wire on spools / coils / cut-to-length pieces
Temperamentos habituales: O / H32 / H34 / H111
Asistencia técnica: cold drawing / annealing / straightening / surface cleaning
Documentos de calidad: Informe MTC con cada pedido
5056 aluminum wire is an Al-Mg-Cr alloy in the 5000 series. It is non-heat-treatable, so its strength is developed through cold work and strain hardening rather than solution or precipitation treatment. The alloy contains approximately 4.5–5.6% magnesium and 0.05–0.20% chromium, giving it a combination of high strength, good weldability and outstanding resistance to marine and industrial atmospheres.
5056 wire is most commonly used as a filler metal for welding magnesium-rich 5xxx alloys, and as cold-heading or rivet wire where strength and corrosion resistance are both required. It is supplied in O (annealed), H32 (quarter-hard), H34 (half-hard) and H111 (lightly worked, annealed) tempers. Equivalent designations include UNS A95056, EN AW-5056 (AlMg5Cr), JIS A5056 and GB/T 3190 5056.
This page focuses on 5056 aluminum wire. The table below summarizes the typical supply program. Custom diameters, coil weights and packaging formats are available on request.
| Attribute | Range / Value |
|---|---|
| Aleación | 5056 (UNS A95056) |
| Tempers | O, H32, H34, H111 |
| Diámetro | 0.8 mm – 12 mm |
| Diameter tolerance | ±0.05 mm |
| Embalaje | spools, coils, cut lengths |
| Coil / spool weight | 10 – 500 kg |
| Common standards | ASTM B316, ASTM B211, EN 573, GB/T 3190 |
Beside general mechanical wire, 5056 is widely requested as a welding filler wire and as cold-heading wire for rivets and fasteners. The O temper is used when the wire must be bent, formed or headed before service; the H32 and H34 tempers provide the higher as-received strength needed for structural fasteners and spring-tension components.
Contact Linsy with your project specification; we can match the certificate format, standard and inspection level you require.
The values below are typical for commercial 5056 aluminum wire. Always confirm the exact heat analysis on the mill test certificate.
| Elemento | Composición (%) |
|---|---|
| Si | 0.30 Max |
| Fe | 0,40 Máx |
| Cu | 0,10 Máx |
| Mn | 0.05 - 0.20 |
| Mg | 4.50 – 5.60 |
| Cr | 0.05 - 0.20 |
| Zn | 0,10 Máx |
| Ti | 0.05 - 0.20 |
| Otros (cada uno) | 0,05 Máx |
| Otros (total) | 0,15 Máx |
| Al | Saldo |
The table below gives typical mechanical properties for 5056 aluminum wire in the most common tempers. Values are approximate and should be verified against the mill test certificate for the specific heat and diameter you order.
| Temple | Resistencia a la tracción (MPa) | Límite elástico (MPa) | Alargamiento (%) | Typical Hardness (HB) |
|---|---|---|---|---|
| O | 290 | 150 | 24 | 65 |
| H32 | 380 | 250 | 20 | 90 |
| H34 | 425 | 290 | 18 | 100 |
| H111 | 310 | 180 | 22 | 70 |
Typical electrical conductivity is approximately 27–29% IACS and thermal conductivity is in the range of 117–130 W/(m·K), depending on temper and diameter.
The magnesium content of 5056 makes it one of the stronger 5xxx alloys in the cold-worked condition. H34 temper wire can reach tensile strengths above 400 MPa while remaining weldable and corrosion resistant.
The Mg-Cr combination forms a stable protective film, giving 5056 very good resistance to seawater, salt spray and humid industrial environments. This makes it a natural choice for marine fittings, coastal structures and offshore hardware.
5056 is frequently used as a filler wire for gas-metal-arc (MIG) and gas-tungsten-arc (TIG) welding of 5083, 5086 and 5456 base alloys. The chemistry matches the base-metal Mg level closely, producing weld metal with compatible strength and corrosion behavior.
Strength is controlled by cold drawing and annealing, not by heat treatment. This is an advantage for wire producers because properties are stable during shipping and storage, but it means users cannot increase strength by artificial aging.
High-magnesium aluminum alloys can be sensitive to stress-corrosion cracking if stored in warm, corrosive environments after heavy cold work. Store coils in a dry location and avoid contact with copper, steel or chloride salts.
5056 wire is produced by cold drawing from redraw rod, followed by annealing (for O and H111) or controlled cold reduction (for H32 and H34). Straightening, cutting and surface cleaning can be performed as final operations. Linsy can supply the wire on DIN spools, random-wound coils or as precision-cut lengths.
Surface finishes normally include mill finish with a light oxide film; optional cleaning, degreasing and PVC wrapping are available for applications requiring bright, contaminant-free wire before welding or anodizing. Because 5056 is often used as a welding filler, surface cleanliness is critical: avoid copper or steel contamination and keep the wire dry until use.
We do not claim blanket stock of every diameter or temper. Lead time for custom sizes is typically 10–60 days depending on order quantity and current schedule.
What is the difference between 5056 and 5356 aluminum wire?
5056 contains more magnesium and is typically used as a filler wire for 5xxx alloys and as rivet/fastener wire. 5356 is a more common general-purpose welding filler with slightly lower magnesium and better feeding characteristics in some MIG setups.
Can 5056 wire be used to weld 6061 aluminum?
It is not the recommended choice. 5056 filler creates a weld metal that is much higher in magnesium than 6061, which can lead to crack sensitivity and reduced color match. For 6061, 5356 or 4043 filler is normally preferred.
Which temper should I choose for rivets?
O temper is easiest to drive and form; H32 is often used for structural rivets that must retain higher shear strength. The best choice depends on the rivet diameter and the required shear load.
Does 5056 wire need special storage?
Store in a dry, covered area. High-magnesium alloys can be sensitive to stress corrosion if exposed to chloride or warm, humid conditions after heavy cold work. Keep the wire free of copper, steel or grease contamination.
Is a mill test certificate included?
Yes. Every Linsy order is shipped with an MTC showing the chemical composition, mechanical properties and dimensional results for the heat supplied.
What is your minimum order quantity?
MOQ depends on diameter and temper. For standard 5056 wire sizes, a typical order starts at one coil or spool; contact us for exact MOQ for your specification.
Can I receive a sample?
Yes, small samples are available for diameter, surface finish and chemistry verification before placing a production order.
¿Cuál es el plazo de entrega habitual?
Custom 5056 aluminum wire is usually delivered within 10–60 days after order confirmation. Stock or semi-finished sizes may be available sooner.
How is the wire packaged?
We supply on DIN spools, random coils, layer-wound coils or cut lengths. Special packaging, labeling and palletization are available on request.
What payment and shipping terms do you offer?
We support standard export terms such as T/T and L/C. Shipping can be arranged by sea, air or courier depending on urgency and order volume.
Ventajas de Linsy
Linsy Aluminum es un proveedor líder de productos de procesamiento de aluminio, que presta servicio a diversas industrias, como la aeroespacial, la ingeniería general, la automoción, la marina, la construcción naval y otras aplicaciones industriales especializadas.
Nos comprometemos a mantener los más altos estándares de calidad y responsabilidad medioambiental, como demuestran nuestras certificaciones: ISO 9001:2008， ISO 14001:2004 y SGS.
