Aluminum 5082
AA 5082 · EN AW-5082, AW 5082
5082 is a non-heat-treatable Al-Mg (5000 series) alloy with about 4.0–5.0% Mg, close in composition to 5182 but lower in manganese, supplied as sheet, strip and plate (3.3345, AlMg4.5).
5082 tempers and conditions
5082 is supplied in 18 conditions, soft to hard.
Compare all 18 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for maximum formability in deep drawing and severe stretch forming. | 125 | 265 | 24 | 62 HB | 29.5 % IACS |
Strain hardened from hot working only | Hot-rolled thicker plate where only minimum properties, not a defined cold-work level, are required. | 135 | 275 | 16 | 65 HB | 29 % IACS |
Slightly strain hardened | Most commonly stocked plate/sheet condition: near-annealed formability with straight, flat product. | 140 | 275 | 20 | 66 HB | 29 % IACS |
Strain hardened and partially annealed, quarter hard | Quarter-hard strength with better ductility than H12 for formed parts. | 210 | 300 | 14 | 74 HB | 29 % IACS |
Strain hardened, quarter hard | Light cold work for modest strength gain with retained bending ability. | 215 | 300 | 12 | 75 HB | 29 % IACS |
Strain hardened and stabilized, quarter hard | Stabilized quarter-hard sheet — the standard choice when age-softening must be avoided. | 215 | 305 | 12 | 76 HB | 29 % IACS |
Strain hardened, corrosion-resistant marine temper | Choose for marine hull and superstructure plate requiring ASTM G66/G67 exfoliation performance. | 215 | 305 | 12 | 78 HB | 29 % IACS |
Strain hardened and stabilized, marine temper | Standard structural plate temper for tanks, marine and pressure applications needing stable properties and good IGC resistance. | 230 | 320 | 12 | 80 HB | 29 % IACS |
Strain hardened and partially annealed, half hard | Half-hard with recovered ductility for roll-formed and moderately drawn parts. | 250 | 330 | 10 | 84 HB | 29 % IACS |
Strain hardened and stabilized, half hard | Stabilized half-hard sheet for tank walls and panels needing higher strength than H32. | 255 | 335 | 9 | 86 HB | 29 % IACS |
Strain hardened, half hard | Half-hard strip for flat or lightly formed parts needing higher yield strength. | 260 | 330 | 9 | 85 HB | 29 % IACS |
Strain hardened and partially annealed, three-quarter hard | Three-quarter hard with slightly improved bendability over H16. | 285 | 355 | 7 | 91 HB | 29 % IACS |
Strain hardened, three-quarter hard | High-strength strip where forming is limited to gentle bends. | 290 | 360 | 6 | 92 HB | 29 % IACS |
Strain hardened and stabilized, three-quarter hard | Stabilized three-quarter hard for high-strength thin sheet/strip. | 290 | 360 | 6 | 93 HB | 29 % IACS |
Strain hardened, full hard | Fully cold-worked strip for maximum strength in flat blanks. | 340 | 390 | 4 | 100 HB | 29 % IACS |
Strain hardened and stabilized, full hard | Stabilized full-hard sheet where the highest non-heat-treatable strength is needed. | 345 | 395 | 4 | 102 HB | 29 % IACS |
Strain hardened, stabilized, extra hard | Extra-hard cold-rolled and low-temperature stabilized condition of Al-4.5Mg 5082, giving the highest strength of the H3x series with very limited ductility; typical of thin can-end / closure stock. | 370 | 400 | 4 | 108 HB | 29 % IACS |
Strain hardened, extra hard | Very heavily cold-rolled thin strip for beverage can ends and tabs. | 375 | 415 | 3 | 108 HB | 29 % IACS |
What is 5082?
5082 is a non-heat-treatable Al-Mg (5000 series) alloy with about 4.0–5.0% Mg, close in composition to 5182 but lower in manganese, supplied as sheet, strip and plate (3.3345, AlMg4.5). It combines medium-high strength with good formability, weldability and seawater corrosion resistance, which is why it is used for deep-drawn can end stock, automotive body sheet, tanks and marine structures. Continuous service above about 65 °C should be avoided, because Mg precipitation at grain boundaries sensitizes the alloy to intergranular corrosion and stress-corrosion cracking. Machinability is only fair and the alloy tends to stick to tooling; 5182 and 5083 are the closest alternatives. 5082 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 577°C (1,071 °F). 5082 has a yield strength of 140 MPa (20.3 ksi) and a tensile strength of 275 MPa (39.9 ksi) — weaker than 70% of aluminum grades. Elongation at break is 20% and the elastic modulus is 70 GPa (10.2 Msi).
What is 5082 used for?
- Deep-drawn can ends
- Tank trucks
- Pressure vessels
- Automotive body panels
- Storage tanks
- Marine hull and deck structures
- Welded sheet-metal enclosures
Advantages
- Tough — resists crack growth — 35 MPa·√m (31.9 ksi·√in), better than 91% of aluminum grades
- Ductile — tolerates forming and impact — 20%, better than 89% of aluminum grades
- Good corrosion resistance — 74/100, better than 87% of aluminum grades
- Forms and bends easily — 78/100, better than 87% of aluminum grades
- Readily welded — 88/100, better than 85% of aluminum grades
Limitations
- Limited service temperature — 65°C (149 °F), worse than 97% of aluminum grades
- Poor heat conductor — 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades
- Low electrical conductivity — 29 % IACS, worse than 78% of aluminum grades
5082 properties
Typical room-temperature values; bars are the position among aluminum grades.
Physical3
5082 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 577°C (1,071 °F).
Mechanical11
5082 has a yield strength of 140 MPa (20.3 ksi) and a tensile strength of 275 MPa (39.9 ksi) — weaker than 70% of aluminum grades. Elongation at break is 20% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
5082 is rated for continuous service to 65°C (149 °F). It conducts heat at 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades. Thermal expansion is 24.2 µm/m·K (13.4 µin/in·°F).
Electrical3
5082 conducts electricity at 29 % IACS, worse than 78% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (74/100), better than 87% of aluminum grades.
Sustainability4
Producing a kilogram of 5082 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability7
5082's machinability is fair (45/100, worse than 72% of aluminum grades); weldability excellent (88/100); formability very good (78/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the aluminum family
Yield strength against density for every aluminum grade FabDigit runs. 5082 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 5082
Is 5082 easy to machine?
Gummy, long-chipping alloy — use sharp polished-flute carbide tools, high rake, high speed and flood coolant or MQL to prevent built-up edge; harder H3x tempers cut cleaner.
Can 5082 be welded?
Readily GMAW/GTAW welded with 5183 or 5356 filler; do not use 4000 series Si fillers (brittle Mg2Si), and keep interpass temperature low to limit sensitization.
Can 5082 be formed, bent or molded?
Excellent deep-drawing and stretch forming in O/H111; watch for Lüders (stretcher-strain) markings on annealed sheet — use temper-rolled or stabilized H2x/H3x for visible surfaces.
Manufacturability
The process limits FabDigit applies to 5082. Every 5082 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
CNC machining
| Machinability | Better45 / 100 |
|---|---|
| ISO material group | N.1 |
| Cutting speed (rough / finish) | 350 / 420 m/min |
| Minimum wall | 0.5 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 8× diameter |
| Best surface (machined / polished) | Ra 0.8 / — |
| Hardenable after machining | No |
Sheet metal
| Formability | Better78 / 100 |
|---|---|
| Weldability | Better88 / 100 |
| Bendable | Yes |
5082 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Si | ≤ 0.2 | 0.1 |
| Fe | ≤ 0.35 | 0.2 |
| Cu | ≤ 0.15 | 0.05 |
| Mnlower than 5182 | ≤ 0.15 | 0.08 |
| Mgprincipal strengthening element | 4 – 5 | 4.5 |
| Cr | ≤ 0.15 | 0.05 |
| Zn | ≤ 0.25 | 0.05 |
| Ti | ≤ 0.1 | 0.02 |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on 5082?
Anodizes clear and bright and takes marine-grade sulphuric anodize well; brushed and painted finishes are common, flux brazing is not recommended due to the high Mg content.
Surface treatments FabDigit runs on aluminum parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Conversion Coating
PVD Coating
Equivalent designations
Standards and trade names that resolve to Aluminum 5082 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Aluminum Association
- AA5082
- EN / DIN / Werkstoff-Nr.
- AW-5082AW 50823.3345AlMg4.5
How much does 5082 cost?
5082 is a standard-cost aluminum ($$), cheaper than about 81% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
5082 — frequently asked
What is 5082 used for?
5082 is typically used for deep-drawn can ends, tank trucks, pressure vessels, automotive body panels, storage tanks and marine hull and deck structures. In short: marine-grade plate alloy.
What is the yield strength of 5082?
5082 has a typical yield strength of 140 MPa (20.3 ksi) and a tensile strength of 275 MPa (39.9 ksi) — weaker than 70% of aluminum grades. Strength varies by condition: see the 18 listed tempers.
Is 5082 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 72% of aluminum grades). Gummy, long-chipping alloy — use sharp polished-flute carbide tools, high rake, high speed and flood coolant or MQL to prevent built-up edge; harder H3x tempers cut cleaner.
Can 5082 be welded?
Yes — weldability is rated excellent (88/100). Readily GMAW/GTAW welded with 5183 or 5356 filler; do not use 4000 series Si fillers (brittle Mg2Si), and keep interpass temperature low to limit sensitization.
What surface finishes work on 5082?
Anodizes clear and bright and takes marine-grade sulphuric anodize well; brushed and painted finishes are common, flux brazing is not recommended due to the high Mg content.
Can 5082 be formed, bent or molded?
Excellent deep-drawing and stretch forming in O/H111; watch for Lüders (stretcher-strain) markings on annealed sheet — use temper-rolled or stabilized H2x/H3x for visible surfaces.
What is the maximum service temperature of 5082?
5082 is rated for continuous use to about 65°C (149 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 5082 cost?
5082 is a standard-cost aluminum ($$), cheaper than about 81% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Can FabDigit make parts in 5082?
Yes — 5082 is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- EN 573-3 Aluminium and aluminium alloys — Chemical composition — CEN (2019)
- EN 485-2 Aluminium and aluminium alloys — Sheet, strip and plate — Mechanical properties — CEN (2016)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B: Corrosion — Materials (aluminium alloys) — ASM International (2005)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.