5086 Aluminum Alloy

What Is 5086 Aluminum Alloy Aluminum?

5086 Aluminum Alloy (AlMg4) is a non-heat-treatable aluminum-magnesium (5xxx) alloy. Its strength comes from magnesium in solid solution and strain hardening, not heat treatment. It offers good corrosion resistance—especially in marine and industrial environments—and welds well, which makes it a common choice for structures exposed to water, chemicals, or cycling loads.

Available 5086 Aluminum Alloy Aluminum Products

5086 Aluminum Alloy is supplied in several forms and tempers. Standard size ranges are below; other dimensions can be discussed with our team.

Sheet & Plate

Item	Range
Thickness	0.5 – 150 mm
Width	1000 – 3000 mm
Length	1000 – 6000 mm
Common tempers	O, H111, H112, H116, H321, H32

Bar (Round / Flat / Square)

Item	Range
Diameter / side	6 – 400 mm
Length	1000 – 6000 mm
Common tempers	O, H111, H112, H116, H321, H32

Tube & Pipe

Item	Range
Outer diameter	6 – 400 mm
Wall thickness	0.5 – 40 mm
Length	1000 – 6000 mm
Common tempers	O, H111, H112, H116, H321, H32

Wire & Coil

Item	Range
Diameter	0.8 – 12 mm
Coil weight	10 – 500 kg
Size tolerance	± 0.05 mm
Common tempers	O, H111, H112, H116, H321, H32

Specifications & Equivalent Designations

Standard	Designation
AA (USA)	5086 Aluminum Alloy
EN AW	AlMg4
Series	5000 (Al-Mg, non-heat-treatable)

Chemical Composition

Element	Weight %
Si	0.40 max
Fe	0.50 max
Cu	0.10 max
Mn	0.20 – 0.70
Mg	3.5 – 4.5
Cr	0.05 – 0.25
Zn	0.25 max
Ti	0.15 max
Al	Balance

Values are typical AA composition ranges; confirm against the ordered specification and the supplied MTC.

Mechanical Properties by Temper

Temper	Tensile (MPa)	Yield (MPa)	Elongation (%)	Brinell
O	275	115	15	65
H111	305	180	14	75
H112	280	130	14	70
H116 / H321	325	230	12	80
H32	325	230	12	80

Mechanical values are representative room-temperature typicals for plate, sheet, or bar and should be confirmed against the ordered thickness and the supplied MTC.

Temper Selection Guide

• O (annealed): softest, best formability and corrosion resistance; for deep drawing and welding.
• H1xx / H2xx / H3xx: strain-hardened tempers with increasing strength and decreasing ductility.
• H116 / H321: stabilized tempers for marine plate with good exfoliation-corrosion resistance.

Choose the softest temper that meets the strength need to keep forming and welding straightforward.

Key Characteristics

Marine corrosion resistance

Good resistance to seawater and many industrial environments, suitable for hulls and offshore parts.

Weldability

Welds readily with TIG/MIG and matching 5xxx filler; strength in the weld zone is close to the base metal.

Strength without heat treatment

Reaches useful strength through strain hardening, so no quenching or aging is needed.

Applications

• Ship and boat structures
• Pressure vessels and tanks
• Welded marine fabrications
• Vehicle bodies and trailers
• Cryogenic and low-temperature equipment

Processing & Surface Finish Notes

5086 Aluminum Alloy is a non-heat-treatable 5xxx alloy, so strength comes from strain hardening (H-tempers), not heat treatment. It cuts, drills, and welds well with standard aluminum tooling.

• Cutting: CNC machining, laser cutting, and sawing are supported.
• Welding: TIG and MIG welding with matching or compatible 5xxx filler.
• Forming: good cold formability in O and soft H-tempers.
• Surface finish: mill finish, anodizing, polishing, powder coating, or PVC film protection.

Note: anodized color of 5xxx alloys can differ slightly from 6xxx alloys; confirm the finish on a sample if color match matters.

Quality Documents & Inspection

Every 5086 order ships with a Mill Test Certificate (MTC) that reports the actual chemical analysis and mechanical results for the supplied material. Third-party SGS or equivalent test reports can be arranged on request for project or tender requirements.

• MTC (EN 10204 3.1 or 3.2) with every order
• Dimensional inspection against the agreed tolerance
• Surface and visual check before packing
• Material traceability by heat / lot number

Why Choose Linsy for 5086 Aluminum Alloy

Linsy Aluminum is a Shenzhen-based aluminum supplier with more than 20 years of experience serving marine, transport, and general engineering customers. We supply 1000–8000 series material in plate, bar, tube, wire, coil, profile, and block forms.

• ISO 9001, ISO 14001, and ISO 45001 certified management systems
• MTC with every order and SGS test reports available on request
• CNC machining, laser cutting, welding, and surface finishing support
• Typical custom lead time 10–60 days, with low minimum order quantities

For a quote, share your alloy, temper, dimensions, quantity, and any certificate requirements.

Related Resources

• 5086 Aluminum Properties & Uses Guide
• 5083 Marine-Grade Aluminum
• 5052 Aluminum Alloy
• Aluminum Tempers Explained

5086 Aluminum Alloy Aluminum FAQ

Is 5086 heat treatable?

No. 5086 is a non-heat-treatable 5xxx alloy; its strength comes from magnesium content and strain hardening (H-tempers).

What filler is used to weld 5086?

Matching 5xxx fillers such as 5356 or 5183 are commonly used, depending on the parent alloy and service conditions.

5086 vs 5083 — which to choose?

Both are marine-grade 5xxx alloys. 5083 (Mg ~4.0–4.9) is typically used for higher-strength plate; 5086 is chosen where its formability and corrosion profile fit the job. Confirm with your design specification.

General Ordering FAQ

What is the typical lead time?

Custom sizes are usually produced within 10–60 days depending on alloy, temper, and quantity. Confirm the schedule when you request a quote.

Do you provide mill test certificates?

Yes. An MTC is provided with every order, and third-party test reports can be arranged on request.

What surface finishes are available?

Mill finish, anodizing, polishing, powder coating, and PVC film are available depending on the form.

What is the minimum order quantity?

We support low MOQs for custom requests. Share your required size and quantity for a quote.