5056 Aluminiumlegierung (EN AW-5056 / AlMg5) is a high-magnesium wrought alloy in the 5xxx series, containing 4.5–5.6% Mg for superior corrosion resistance in marine and industrial environments. Linsy Aluminum supplies 5056 in sheet, plate, bar, tube, profile, and wire forms across O, H32, H34, H38, and H111 tempers, with custom dimensions cut to specification. The alloy is widely specified for rivets, welded marine structures, pressure vessels, and chemical equipment where a non-heat-treatable, weldable material with reliable strength is required. Every order ships with a mill test certificate (MTC), and SGS third-party test reports are available on request.
Verfügbare Formulare: sheet / coil / plate / bar / tube / wire / profile
Häufige Temperamente: O / H32 / H34 / H38 / H111
Unterstützung bei der Bearbeitung: CNC machining / laser cutting / TIG & MIG welding / polishing / anodizing
Qualitätsdokumente: MTC-Bericht bei jeder Bestellung
5056 Aluminiumlegierung is a wrought aluminum-magnesium alloy in the 5xxx series with a nominal magnesium content of 5.0% (range 4.5–5.6%). Its European designation is EN AW-5056 oder AlMg5, reflecting the high Mg content that gives it outstanding corrosion resistance — particularly in seawater and chloride-rich environments. Unlike the 2xxx, 6xxx, and 7xxx series, 5056 is a nicht wärmebehandelbar alloy: its strength is developed through cold working (strain hardening), and tempers carry an H-prefix (H32, H34, H38, etc.).
Compared to the more common 5052 (2.2–2.8% Mg), 5056 offers roughly 15–20% higher tensile strength at equivalent cold-work levels, along with a stronger resistance to alkaline and marine corrosion. Compared to 5083 (4.0–4.9% Mg), 5056 sits slightly higher in magnesium content and is frequently chosen for rivet stock and wire applications where 5083 is less common. It is not intended for structural aerospace applications — for those, 2024 or 7075 are preferred — but it remains a staple alloy in marine hardware, pressure vessels, chemical tanks, and industrial wire products.
Linsy stocks and supplies 5056 aluminum in the following product forms. Custom dimensions are available on request with lead times typically ranging from 10 to 60 days for non-standard sizes.
5056 sheet and coil are produced to ASTM B209 and EN 485 standards. Standard tempers include O (annealed) for deep-drawing applications and H32/H34 for general service. Coil widths up to 2,600 mm are available for high-volume slitting and blanking programs.
| Legierung | Temperament | Dicke (mm) | Breite (mm) | Länge (mm) |
|---|---|---|---|---|
| 5056 Sheet | O, H32, H34, H111 | 0.5–6.0 | 500–2,600 | 1,000–6,000 |
| 5056 Coil | O, H32, H34 | 0.5–4.0 | 500–2,600 | Spule |
5056 round and square bar stock is suitable for machined components in marine and chemical processing equipment. Standard lengths are 1,000–6,000 mm with optional cut-to-length service.
| Legierung | Temperament | Diameter / Width (mm) | Länge (mm) |
|---|---|---|---|
| 5056 Round Bar | O, H32, H34, H111 | 3–200 | 1,000–6,000 |
| 5056 Square Bar | O, H32, H34, H111 | 6–150 | 1,000–6,000 |
5056 round and square tube is supplied in O, H32, H34, and H111 tempers. Tube is produced to ASTM B210 / EN 754 standards. Wall thickness can be specified separately for round tube; square tube dimensions are given as outer dimensions.
| Legierung | Temperament | Outer Diameter / Side (mm) | Länge (mm) |
|---|---|---|---|
| 5056 Round Tube | O, H32, H34, H111 | 6–200 | 1,000–6,000 |
| 5056 Square Tube | O, H32, H34, H111 | 10–150 | 1,000–6,000 |
5056 is one of the most important wire alloys in the 5xxx series, primarily used for rivet manufacturing. Wire is drawn to tight diameter tolerances (±0.02 mm) and supplied in coils with a minimum weight of 50 kg per coil. The alloy’s combination of high shear strength and good cold-heading characteristics makes it the preferred material for aluminum structural rivets.
| Legierung | Temperament | Durchmesser (mm) | Weight / Coil | Toleranz |
|---|---|---|---|---|
| 5056 Wire | O, H32, H34, H111 | 0.8–12.0 | Mindestens 50 kg | ±0.02 mm |
Custom extruded profiles, flat bar, and cut-to-size plate in 5056 are available by enquiry. Contact our sales team with your drawing or specification for a quote.
5056 is recognized under multiple national and international standards. The table below lists the most commonly referenced equivalent designations.
| Standard | Bezeichnung |
|---|---|
| EN (Europäisch) | EN AW-5056 / Al Mg5 |
| UNS (USA) | A95056 |
| ISO | Al Mg5 |
| JIS (Japan) | A5056 |
| DIN (Germany, superseded) | AlMg5 |
| BS (UK, superseded) | N5 |
Applicable product standards include:
The chemical composition of 5056 aluminum alloy conforms to EN 573-3 and ASTM B209 requirements. The table below shows the nominal composition limits in weight percent.
| Element | Content (wt %) |
|---|---|
| Silizium (Si) | 0.30 Max |
| Eisen (Fe) | 0,40 Maximal |
| Kupfer (Cu) | 0,10 Maximal |
| Mangan (Mn) | 0.05–0.20 |
| Magnesium (Mg) | 4.5–5.6 |
| Chrom (Cr) | 0.05–0.20 |
| Zink (Zn) | 0,10 Maximal |
| Titan (Ti) | 0,15 Maximal |
| Sonstiges, Sonstiges | 0,05 Max |
| Sonstige, Gesamt | 0,15 Maximal |
| Aluminium (Al) | Bilanz |
Mechanical properties vary significantly with temper condition. The table below shows typical tensile and hardness values for the most commonly supplied 5056 tempers. Values are representative for sheet and plate products per ASTM B209; wire and tube properties may differ slightly under their respective product standards.
| Temperament | Zugfestigkeit (MPa) | Streckgrenze (MPa) | Dehnung (%) | Härte (HB) |
|---|---|---|---|---|
| O (geglüht) | 290 | 152 | 35 | 65 |
| H32 (Strain-hardened, 1/4 hard) | 315 | 228 | 25 | 85 |
| H34 (Strain-hardened, 1/2 hard) | 345 | 283 | 15 | 95 |
| H38 (Strain-hardened, full hard) | 414 | 345 | 7 | 105 |
| H111 (Annealed & slightly strain-hardened) | 305 | 180 | 30 | 75 |
Anmerkung: Actual mechanical properties will vary with product form (sheet, plate, bar, tube, wire) and section thickness. For critical applications, request a material test certificate with lot-specific values. H38 and H18 tempers are typically available only in thin-gauge sheet and wire products. The values above represent typical mid-range properties; minimum guaranteed values per applicable ASTM or EN standards may be lower.
Choosing the right temper for 5056 aluminum depends on your forming, strength, and service requirements. Because 5056 is non-heat-treatable, temper selection controls the trade-off between formability and strength.
| Temperament | Recommended For | Verformbarkeit | Typischer Anwendungsfall |
|---|---|---|---|
| O | Maximum ductility and deep drawing | Ausgezeichnet | Spun parts, deep-drawn pressure vessel heads, complex formed components |
| H32 | Moderate forming with good strength | Gut | Marine panels, welded tanks, general sheet metal work |
| H34 | Higher strength, limited forming | Messe | Structural brackets, machine frames, boat hull stiffeners |
| H38 | Maximum strength, minimal forming | Limited | Rivet wire, spring components, high-wear guides |
| H111 | Annealed with slight stiffening for flatness | Sehr gut | Welded fabrications where post-weld strength recovery is not required |
Wichtig: Welding will reduce strength in the heat-affected zone for all strain-hardened tempers (H32, H34, H38). For welded structures, design to the O-temper properties in the weld region, or specify a post-weld stress-relief treatment. The H111 temper is often preferred for welded assemblies because it starts close to the annealed condition and minimizes property mismatch across the weld zone.
The 4.5–5.6% magnesium content in 5056 provides exceptional resistance to seawater, salt spray, and alkaline industrial environments. It outperforms 5052 and most 6xxx alloys in marine atmospheric exposure. 5056 does not require cladding or protective coatings for most service conditions, though anodizing can further enhance surface durability and appearance. Unlike some 5xxx alloys with lower Mg content, 5056 also resists corrosion in mildly alkaline chemical environments such as soap and detergent processing lines.
5056 is readily weldable by TIG (GTAW) and MIG (GMAW) processes using 5356 or 5183 filler wire. The alloy’s high magnesium content means it retains good post-weld corrosion resistance even without post-weld heat treatment — a significant advantage over heat-treatable alloys like 6061, where the weld zone strength can drop substantially. 5056 welds are generally free of hot-cracking susceptibility when proper filler selection and joint design are used. Resistance spot welding and seam welding are also feasible.
In the H34 temper, 5056 achieves approximately 345 MPa tensile strength at a density of 2.66 g/cm³, yielding a specific strength comparable to some mild steels at roughly one-third the weight. It will not match the strength of heat-treated 7075 or 2024, but for applications where weldability and corrosion resistance are the primary concerns, 5056 delivers a well-balanced performance profile. The alloy maintains useful strength at moderately elevated temperatures up to approximately 150°C.
5056 is widely specified as a rivet alloy because it combines high shear strength (approximately 220 MPa in H34 temper) with excellent cold-heading ductility. Rivets made from 5056 wire can be driven in the as-received H34 condition without cracking, making it the standard choice for aluminum structural rivets in marine, rail, and general engineering applications. The alloy’s cold formability also supports bending, flanging, and moderate stretch forming in the O and H32 tempers.
Unlike 2xxx, 6xxx, and 7xxx series alloys, 5056 cannot be strengthened by solution heat treatment and aging. Its mechanical properties are controlled entirely by the degree of cold work (strain hardening). This has practical implications: sections that are welded or heavily formed will soften to near-O temper properties in the affected region. However, this also means 5056 does not require post-forming heat treatment to recover properties — simplifying manufacturing for many marine and industrial fabricators.
5056 aluminum alloy is specified across marine, industrial, and transportation sectors where corrosion resistance and weldability are priorities:
5056 is weldable by all standard arc processes (TIG/GTAW, MIG/GMAW). Recommended filler metals are ER5356 (standard) or ER5183 (for maximum joint strength). Do not use ER4043 filler — the silicon content can promote brittle intermetallic formation with the high-magnesium base metal. Preheat is generally not required for sections under 10 mm. For thicker sections, a preheat of 60–100°C can reduce weld cracking risk. Post-weld cleaning is essential: remove all oxide and flux residue to prevent localized corrosion in the weld area. Design welded structures to O-temper properties in the heat-affected zone unless post-weld treatment is applied.
5056 in the O temper has fair machinability — it is gummy and tends to produce long chips. In the H34 and H38 tempers, machinability improves significantly. Use sharp carbide tooling with high rake angles, adequate coolant flow, and moderate cutting speeds. For production machining of 5056 components, the H34 or H38 temper is recommended for best results.
5056 in the O temper offers excellent formability for deep drawing, spinning, and complex bending operations. The H32 and H34 tempers support moderate forming with larger bend radii. The H111 temper provides a good compromise — annealed ductility with slightly improved shape retention. Minimum bend radii for H32 temper are approximately 1.5–2T (where T = material thickness); for O temper, 0.5–1T.
5056 accepts anodizing well, producing a protective oxide layer that enhances already-strong corrosion resistance. Clear (natural) anodizing is most common for marine applications; colored anodizing is feasible but may show slight tone variations due to the alloy’s Mg content. Mechanical finishing options include polishing (mill, brushed, mirror), glass bead blasting, and chemical brightening. Powder coating and liquid painting are also compatible with 5056 substrates when proper pre-treatment (chromate conversion or thin-film anodizing) is applied.
Linsy Aluminum maintains a quality management system certified to ISO 9001. For every 5056 order, we provide:
Our facility operates under ISO 14001 environmental management and ISO 45001 occupational health and safety management systems.
Linsy Aluminum is a Shenzhen-based aluminum factory with over 20 years of experience supplying 1000-series through 8000-series alloys to global markets. We are not a trading company — we control production, quality, and logistics in-house.
For deeper technical background on 5056 aluminum and related alloys, see the following resources from Linsy’s knowledge library:
Q: What is the difference between 5056 and 5052 aluminum?
A: The key difference is magnesium content: 5052 contains 2.2–2.8% Mg, while 5056 contains 4.5–5.6% Mg. The higher magnesium level gives 5056 roughly 15–20% greater tensile strength, improved corrosion resistance in alkaline and marine environments, and higher shear strength — which is why 5056 is preferred for structural rivets. 5052 is more widely stocked and often more economical; choose 5052 for general sheet metal and 5056 when you need the extra corrosion performance or rivet-grade properties.
Q: Is 5056 suitable for marine use?
A: Yes. 5056 is considered a marine-grade aluminum alloy with excellent resistance to seawater corrosion. It is used in boat hulls, decks, superstructures, and welded marine fabrications. For the highest seawater corrosion resistance in the 5xxx series, 5083 and 5383 are sometimes preferred for fully submerged hull plating, but 5056 performs well in splash-zone and atmospheric marine exposure. H116 or H321 tempers (which offer enhanced intergranular corrosion resistance) may not be commonly available in 5056; for long-term immersion, discuss material selection with our technical team.
Q: Can 5056 aluminum be welded?
A: Yes, 5056 is readily weldable by TIG and MIG processes using ER5356 or ER5183 filler. The alloy exhibits low hot-cracking susceptibility and good post-weld corrosion resistance. Note that welding will reduce strength in the heat-affected zone to approximately O-temper levels; for critical welded structures, base your design calculations on O-temper properties in the weld region.
Q: Can 5056 be heat treated to increase strength?
A: No. 5056 is a non-heat-treatable alloy. Its strength comes from cold working (strain hardening). The only way to increase 5056’s strength after annealing is to cold-work it — e.g., by rolling, drawing, or stretching. If your application requires a heat-treatable alloy with similar corrosion resistance, consider 6061-T6 (lower corrosion resistance, higher strength) or consult our team about 5083 with H321 temper.
Q: What temper should I order 5056 wire in for rivet production?
A: 5056 rivet wire is typically supplied in H34 or H38 temper. H34 provides a good balance of cold-heading formability and driven-rivet shear strength. H38 delivers maximum shear strength for applications where the rivet heads can be driven without cracking. Our team can advise on the best temper based on your rivet diameter, head style, and driven condition requirements.
Q: What is the minimum order quantity (MOQ) for 5056 aluminum?
A: MOQ depends on the product form. Sheet and plate orders typically start from 500 kg; bar and tube from 100 kg; wire from 50 kg per coil. Smaller trial quantities for sampling and qualification are available — contact us for details.
Q: How long does delivery take?
A: Stock items typically ship within 7–15 days. Custom-cut or non-standard dimensions require 10–60 days depending on the product form and quantity involved. We provide a confirmed delivery schedule with every quotation.
Q: Do you provide material certificates?
A: Yes. Every order ships with a Mill Test Certificate (MTC / EN 10204 3.1) showing the chemical composition and mechanical properties of the supplied lot. SGS third-party test reports, Certificates of Origin, and marine classification society certification (DNV, LR, ABS, BV) are available on request.
Q: Can Linsy ship 5056 aluminum internationally?
A: Yes. We supply 5056 to customers in Europe, Southeast Asia, the Middle East, Africa, and the Americas. Export packaging (seaworthy crates, protective wrapping) is standard for all international shipments. We can quote FOB Shenzhen, CIF destination port, or DAP terms based on your preference.
Q: Which payment methods do you accept?
A: We accept T/T (telegraphic transfer) and irrevocable L/C at sight. For new customers, a 30% deposit with the balance against shipping documents is standard. Long-term contract terms are negotiable.
Linsy Vorteile
Linsy Aluminum ist ein führender Anbieter von Produkten für die Aluminiumverarbeitung und beliefert verschiedene Branchen wie die Luft- und Raumfahrt, den allgemeinen Maschinenbau, die Automobilindustrie, die Schifffahrt, den Schiffbau und andere spezialisierte industrielle Anwendungen.
Wir verpflichten uns, die höchsten Qualitäts- und Umweltstandards einzuhalten, was durch unsere Zertifizierungen belegt wird: ISO 9001:2008, ISO 14001:2004 und SGS.
