Aluminum 2008
AA 2008 · UNS A92008
2008 (A92008) is an Al-Cu-Mg-Si automotive body sheet alloy that combines high as-delivered formability with a bake-hardening response during the paint cure.
Reference datasheet — 2008 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the T4 condition
2008 tempers and conditions
2008 is supplied in 6 conditions, soft to hard. T4 is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition, used for intermediate processing or extremely severe draws; must be solution treated afterwards to develop strength. | 60 | 130 | 32 | 38 HB | 48 % IACS |
Solution heat treated, pre-aged/stabilized for controlled natural ageing | Mill pre-age (short low-temperature hold) that suppresses room-temperature ageing drift and preserves the paint-bake response over long storage. | 120 | 235 | 29 | 63 HB | 43 % IACS |
T4Default Solution heat treated and naturally aged | Standard as-delivered condition for automotive outer-panel stamping: maximum formability with bake-hardening reserve. | 125 | 240 | 28 | 65 HB | 42 % IACS |
Solution treated, ~2 % cold stretched, then paint-bake aged | The in-service condition of a stamped and painted panel — 170–185 °C / 20–30 min bake raises yield strength by 80–120 MPa for dent resistance. | 245 | 300 | 15 | 88 HB | 45 % IACS |
T6, heat treated by the user | Same property level as T6 but obtained by heat treating after forming/welding at the fabricator rather than at the mill. | 270 | 310 | 12 | 93 HB | 46 % IACS |
Solution heat treated and artificially aged | Peak-aged condition for parts needing maximum strength after forming; formability is largely exhausted. | 275 | 315 | 12 | 95 HB | 46 % IACS |
What is 2008?
2008 (A92008) is an Al-Cu-Mg-Si automotive body sheet alloy that combines high as-delivered formability with a bake-hardening response during the paint cure. In T4 it gives 240 MPa tensile, 125 MPa yield, 28 % elongation and 65 HB, with 185 W/m·K conductivity and 42 % IACS, which suits deep-drawn outer panels and closures; T81, T6 and T62 raise strength after forming. Copper limits corrosion resistance and makes fusion welding crack-sensitive, so panels are spot welded, riveted or bonded and always painted. 6111 or 6016 sheet are the usual alternatives when corrosion resistance and joining flexibility matter more. 2008 has a density of 2.72 g/cm³ (0.0983 lb/in³), heavier than 57% of aluminum grades. It melts at 560°C (1,040 °F). 2008 has a yield strength of 125 MPa (18.1 ksi) and a tensile strength of 240 MPa (34.8 ksi) — weaker than 75% of aluminum grades. Elongation at break is 28% and the elastic modulus is 70 GPa (10.2 Msi).
What is 2008 used for?
- automotive body panels
- closures
- stamped sheet parts
Advantages
- Ductile — tolerates forming and impact — 28%, better than 96% of aluminum grades
- Forms and bends easily — 85/100, better than 91% of aluminum grades
- Conducts heat well — 185 W/m·K (106.9 BTU/hr·ft·°F), better than 87% of aluminum grades
- High electrical conductivity — 42 % IACS, better than 81% of aluminum grades
Limitations
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
- Low strength — 125 MPa (18.1 ksi), worse than 75% of aluminum grades
- Needs corrosion protection — 40/100, worse than 75% of aluminum grades
2008 properties
Typical room-temperature values for 2008-T4; bars are the position among aluminum grades.
Physical3
2008 has a density of 2.72 g/cm³ (0.0983 lb/in³), heavier than 57% of aluminum grades. It melts at 560°C (1,040 °F).
Mechanical10
2008 has a yield strength of 125 MPa (18.1 ksi) and a tensile strength of 240 MPa (34.8 ksi) — weaker than 75% of aluminum grades. Elongation at break is 28% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
2008 is rated for continuous service to 120°C (248 °F). It conducts heat at 185 W/m·K (106.9 BTU/hr·ft·°F), better than 87% of aluminum grades. Thermal expansion is 23.4 µm/m·K (13 µin/in·°F).
Electrical3
2008 conducts electricity at 42 % IACS, better than 81% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), worse than 75% of aluminum grades.
Sustainability4
Producing a kilogram of 2008 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 25%.
Manufacturability7
2008's machinability is good (55/100, worse than 59% of aluminum grades); weldability fair (35/100); formability excellent (85/100).
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. 2008 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 2008
Is 2008 easy to machine?
Machines like a soft 2000-series-T4 sheet — sharp positive-rake carbide, high speed and flood coolant to avoid built-up edge; chips improve markedly after artificial ageing.
Can 2008 be welded?
Cu-bearing and hot-crack sensitive in fusion welding; join by resistance spot welding, self-piercing rivets, clinching or structural adhesive, with 4043 filler only if arc welding is unavoidable.
Can 2008 be formed, bent or molded?
Stamp in the T4/T4P condition promptly after delivery — high n-value and elongation suit deep-drawn outer panels; allow for continued natural ageing if the coil is stored warm.
2008 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 | 0.5 – 0.8 | 0.65 |
| Feimpurity limit | ≤ 0.4 | 0.2 |
| Cumain strengthening addition | 0.7 – 1.1 | 0.9 |
| Mn | ≤ 0.3 | 0.1 |
| Mgwith Si/Cu gives bake-hardening | 0.25 – 0.5 | 0.38 |
| Cr | ≤ 0.1 | |
| Zn | ≤ 0.25 | |
| Tigrain refiner | ≤ 0.1 | 0.02 |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on 2008?
Zr/Ti or chromate-free conversion pretreatment plus e-coat/paint is standard; clear anodizing is only fair (yellow-tinged film) because of the copper.
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).
Organic Coating
Equivalent designations
Standards and trade names that resolve to Aluminum 2008 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A92008
How much does 2008 cost?
2008 is a premium-cost aluminum ($$$), cheaper than about 51% 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.
2008 — frequently asked
What is 2008 used for?
2008 is typically used for automotive body panels, closures and stamped sheet parts. In short: bake-hardening body sheet; high-formability 2000-series sheet; spot weld or rivet.
What is the yield strength of 2008?
2008 has a typical yield strength of 125 MPa (18.1 ksi) and a tensile strength of 240 MPa (34.8 ksi) — weaker than 75% of aluminum grades. Strength varies by condition: see the 6 listed tempers.
Is 2008 easy to machine?
Reasonably — machinability is rated good (55/100, worse than 59% of aluminum grades). Machines like a soft 2000-series-T4 sheet — sharp positive-rake carbide, high speed and flood coolant to avoid built-up edge; chips improve markedly after artificial ageing.
Can 2008 be welded?
With care — weldability is rated fair (35/100). Cu-bearing and hot-crack sensitive in fusion welding; join by resistance spot welding, self-piercing rivets, clinching or structural adhesive, with 4043 filler only if arc welding is unavoidable.
What surface finishes work on 2008?
Zr/Ti or chromate-free conversion pretreatment plus e-coat/paint is standard; clear anodizing is only fair (yellow-tinged film) because of the copper.
Can 2008 be formed, bent or molded?
Stamp in the T4/T4P condition promptly after delivery — high n-value and elongation suit deep-drawn outer panels; allow for continued natural ageing if the coil is stored warm.
What is the maximum service temperature of 2008?
2008 is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 2008-T4 and 2008-T6?
T4 is the default condition — standard as-delivered condition for automotive outer-panel stamping: maximum formability with bake-hardening reserve. T6: peak-aged condition for parts needing maximum strength after forming; formability is largely exhausted. Yield strength is 125 MPa in T4 versus 275 MPa in T6.
How much does 2008 cost?
2008 is a premium-cost aluminum ($$$), cheaper than about 51% 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.
Sources
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- ASTM B209 — Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate — ASTM International (2021)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- Aluminum Alloys for Automotive Body Sheet (SAE technical literature) — SAE International (2015)
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.