5083 h18 0 7mm 0 8mm thickness aluminium coil roll

02/11 2026

When buyers search for a 5083 H18 0.7mm 0.8mm thickness aluminium coil roll, they're often comparing "just another marine alloy coil" against a long list of similar-sounding options. A more useful way to evaluate this material is to see it as a performance sheet in motion: a coil that must survive slitting, leveling, forming, joining, and real service exposure-without losing the very advantage that makes 5083 famous: strength plus corrosion resistance in aggressive environments.

5083 aluminium coil roll: the alloy designed for "wet, salty, demanding"

AA 5083 is an Al-Mg-Mn alloy (5xxx series). Its reputation comes from doing two things at once:

• resisting corrosion exceptionally well in marine and industrial atmospheres
• keeping high strength without relying on heat treatment (it's non-heat-treatable)

For coil users, that means stable properties through processing. In many applications-marine panels, vehicle body components, chemical tanks, architectural elements near the coast-5083 coil is chosen because it tolerates the real world rather than lab conditions.

When you specify 0.7mm or 0.8mm thickness, you're usually balancing stiffness, weight, and forming behavior. At these gauges, coil consistency and temper choice become decisive, because minor variations show up quickly as waviness, cracking during forming, or uneven springback.

H18 temper in 5083: "maximum work hardening" as a manufacturing tool

The H18 temper signals full-hard strain hardening. In plain terms, the alloy has been cold worked to the highest standard level for the H1x family. This is not a heat-treated "locked-in" strength; it's strength created by deformation-useful when your product needs higher rigidity and dent resistance at thin gauges.

From a production perspective, 5083-H18 aluminium coil behaves like a material that wants to stay flat and strong-excellent for parts that must maintain shape-but it demands respect in forming operations. Tight radii, aggressive deep drawing, and complex forming may call for different tempers (often H111 or O), but for applications where the part is primarily bent, roll-formed, or lightly formed, H18 can be a performance advantage.

Typical implications of choosing 5083-H18 in 0.7mm and 0.8mm include:

• higher yield and tensile strength compared with softer tempers
• improved surface "feel" and rigidity for panels
• less tolerance for tight forming radii than annealed conditions
• careful attention required for slitting quality, edge condition, and burr control

0.7mm vs 0.8mm aluminium coil roll: why the 0.1mm matters

At first glance, 0.7mm and 0.8mm look nearly identical. In practice, that 0.1mm difference can change outcomes:

• stiffness rises noticeably, especially over wide spans
• dent resistance and perceived solidity improve
• weight increases by about 14% from 0.7mm to 0.8mm at the same width and length
• forming force requirements increase, and springback can become more pronounced

In coil-based manufacturing, gauge selection is often a hidden lever: it affects not only the part performance but also tool wear, leveling settings, and scrap rates.

Implementation standards and common compliance references for 5083 aluminium coil

To ensure 5083 aluminium coil roll meets internationally recognized requirements, buyers typically align specifications to widely used standards. Depending on region and application, 5083 coil is commonly supplied in accordance with:

• ASTM B209 for aluminium and aluminium-alloy sheet and plate (frequently referenced for coil/sheet chemistry and mechanical expectations)
• EN 573 for chemical composition of aluminium and aluminium alloys (Europe)
• EN 485 for mechanical properties and tolerances of sheet/strip (Europe)
• JIS H4000 / JIS H4160 (Japan, depending on product form and procurement practice)

In procurement language, what matters is that the coil is delivered with clear confirmation of alloy, temper, thickness tolerance, and inspection documentation such as mill test certificates.

parameters for 5083 H18 aluminium coil roll (0.7mm, 0.8mm)

A coil purchase is not only "alloy and temper." It's a set of parameters that determine whether your line runs smoothly.

Common order and production parameters include:

• Alloy: AA 5083
• Temper: H18 (full-hard strain hardened)
• Thickness: 0.70mm, 0.80mm
• Width: customizable according to slitting plan and end use
• Coil ID: commonly 505mm / 508mm or as agreed
• Coil OD: determined by weight and line limits
• Surface finish: mill finish or customer-defined finish; protective film optional
• Edge: mill edge or slit edge depending on width strategy
• Flatness: controlled by leveling and tension management (critical at thin gauges)
• Packaging: seaworthy export packing if required, moisture barrier + desiccant optional for long transit

If your application is sensitive to appearance or downstream coating, it's also wise to specify surface requirements clearly, including allowable roll marks, inclusions, and oil level.

Chemical composition of 5083 aluminium alloy (typical limits)

The chemistry is the "DNA" that explains why 5083 performs well in corrosive environments. Magnesium is the main strengthening element; manganese improves strength and structure; chromium supports corrosion performance and grain structure control.

Below is a commonly referenced chemical composition range for AA 5083 (values in wt.%). Exact limits may be governed by the standard you specify and the mill's certified analysis.

This chemistry is a major reason 5083 is widely selected where chloride exposure is expected, and why it is favored over many general-purpose alloys when corrosion resistance is not negotiable.

Alloy tempering and processing conditions that influence real-world performance

Since 5083 is non-heat-treatable, its properties are governed primarily by work hardening and stabilization behavior, not by solution/aging cycles.

For 5083-H18 aluminium coil, practical performance is influenced by:

• cold rolling reduction history, which drives hardness and strength
• coil leveling strategy, affecting residual stress and flatness
• storage conditions, especially for appearance-critical products
• cutting and slitting practices, which affect edge cracking risk during bending
• joining method selection, since welding can soften the heat-affected zone in 5xxx alloys

If the coil is destined for welding, it's important to recognize that while 5083 weldability is excellent, the H18 temper's work-hardened strength will reduce locally in the welded region. Many designers account for this by designing joints appropriately or selecting temper based on where welding occurs.

Where 5083-H18 0.7mm and 0.8mm coil quietly excels

This product shines in applications that value thin-gauge strength and environmental durability. Typical use cases include:

• marine interior and exterior panels where stiffness matters
• transportation panels and enclosures requiring dent resistance
• chemical equipment cladding and covers exposed to humidity or salts
• architectural components near coastlines
• lightweight protective housings where reliability beats decorative perfection

At these thicknesses, 5083-H18 acts like a "structural skin"-thin, but not fragile-especially when compared with softer tempers that may form more easily but feel less rigid in service.

Buying guidance: what to confirm on a 5083-H18 aluminium coil quote

To avoid surprises, confirm details that directly affect yield and processing stability:

• certified compliance standard (ASTM/EN/JIS as required)
• temper verification for H18 and any stabilization expectations
• thickness and width tolerances aligned to your tooling
• surface protection strategy for shipping and storage
• edge quality requirements for your bending radius and forming approach
• coil set and flatness targets based on your decoiler and feeder system

5083   

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