Aluminum 6110 · temper
Aluminum 6110-O
Properties of the O condition, compared with the other 6110 tempers.
Fully annealed for maximum cold formability or before re-solution treating; strength is low.
What is 6110-O?
6110-O is 6110 in the O temper — fully annealed for maximum cold formability or before re-solution treating; strength is low. 6110-O has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 135 MPa (19.6 ksi) — weaker than 92% of aluminum grades. Elongation at break is 26% and the elastic modulus is 70 GPa (10.2 Msi). 6110-O has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 580°C (1,076 °F).
Advantages
- Ductile — tolerates forming and impact — 26%, better than 95% of aluminum grades
- Forms and bends easily — 85/100, better than 91% of aluminum grades
- High electrical conductivity — 47 % IACS, better than 88% of aluminum grades
- Conducts heat well — 185 W/m·K (106.9 BTU/hr·ft·°F), better than 87% of aluminum grades
- Polishes to a fine finish — 65/100, better than 82% of aluminum grades
Limitations
- Low strength — 70 MPa (10.2 ksi), worse than 92% of aluminum grades
- Difficult to machine — 35/100, worse than 86% of aluminum grades
6110-O properties
Typical room-temperature values for 6110-O — 9 properties are specific to this condition; the rest are grade-level values shared by every 6110 temper. Each bar shows where the value sits among the aluminum grades in FabDigit's library — further right is higher.
Physical3
6110-O has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 580°C (1,076 °F).
Mechanical12
6110-O has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 135 MPa (19.6 ksi) — weaker than 92% of aluminum grades. Elongation at break is 26% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
6110-O is rated for continuous service to 150°C (302 °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
6110-O conducts electricity at 47 % IACS, better than 88% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), better than 57% of aluminum grades.
Sustainability4
Producing a kilogram of 6110-O takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 75% of aluminum grades. Typical recycled content is 30%.
Manufacturability8
6110-O's machinability is fair (35/100, worse than 86% of aluminum grades); weldability good (58/100); formability excellent (85/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other 6110 tempers and conditions
6110 is also supplied in 5 other conditions. The full side-by-side table is on the 6110 overview.
- T6Standard supply condition: peak strength for automotive forgings, suspension parts and high-strength machined components.360 MPa yield · 118 HB
- T5Press-quenched extrusions aged without a separate solution treatment — lower cost and less distortion, ~10–15 % below T6 strength.300 MPa yield · 105 HB
- T7Over-aged for improved corrosion/IGC resistance and thermal stability, trading roughly 10 % of T6 strength.295 MPa yield · 100 HB
- T4Choose when parts must be stamped, bent or hemmed before a final paint-bake/T6 age to reach full strength.140 MPa yield · 70 HB
- OFully annealed for maximum cold formability or before re-solution treating; strength is low.70 MPa yield · 40 HB
Working with 6110-O
Is 6110 easy to machine?
Machines very well in T6 with polished-flute carbide, high speed and flood coolant or MQL; sharp rake and chip breakers avoid the gummy chips seen in T4.
Can 6110 be welded?
MIG/TIG weldable with 4043 (crack resistance) or 5356 (strength/anodizing match); HAZ drops to near-T4 strength, so re-solution + age or design joints away from peak stress.
Can 6110 be formed, bent or molded?
Extrudes and hot-forges readily above 400 °C; do sheet/tube bending in O or T4 and age afterwards — T6 has limited bend radius and springback is high.
What surface finishes work on 6110?
Takes clear and hard sulfuric anodizing well and accepts chromate/Ti-Zr conversion coats before e-coat; Cu content means decorative bright anodize may look slightly hazy.
6110 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 |
|---|---|---|
| Siwith Mg forms Mg2Si strengthening phase | 0.7 – 1.5 | 1 |
| Mg | 0.5 – 1.1 | 0.8 |
| Curaises strength, lowers corrosion resistance | 0.2 – 0.7 | 0.4 |
| Mngrain/recrystallisation control | 0.2 – 0.7 | 0.4 |
| Cr | 0.04 – 0.25 | 0.12 |
| Feimpurity limit | ≤ 0.8 | 0.3 |
| Znimpurity limit | ≤ 0.3 | — |
| Tigrain refiner | ≤ 0.15 | — |
| Others (each)total 0.15 max | ≤ 0.05 | — |
| Al | balance | — |
6110-O — frequently asked
What is 6110-O used for?
6110-O is typically used for forged suspension arms, pickup truck chassis components, extruded automotive structural sections, steering and control-arm forgings, high-strength machined brackets and load-bearing bolted fittings. In short: high-strength suspension forging.
What is the yield strength of 6110-O?
6110-O has a typical yield strength of 70 MPa (10.2 ksi) and a tensile strength of 135 MPa (19.6 ksi) — weaker than 92% of aluminum grades. Strength varies by condition: see the 6 listed tempers.
Is 6110-O easy to machine?
Not especially — machinability is rated fair (35/100, worse than 86% of aluminum grades). Machines very well in T6 with polished-flute carbide, high speed and flood coolant or MQL; sharp rake and chip breakers avoid the gummy chips seen in T4.
Can 6110-O be welded?
Yes — weldability is rated good (58/100). MIG/TIG weldable with 4043 (crack resistance) or 5356 (strength/anodizing match); HAZ drops to near-T4 strength, so re-solution + age or design joints away from peak stress.
What surface finishes work on 6110-O?
Takes clear and hard sulfuric anodizing well and accepts chromate/Ti-Zr conversion coats before e-coat; Cu content means decorative bright anodize may look slightly hazy.
Can 6110-O be formed, bent or molded?
Extrudes and hot-forges readily above 400 °C; do sheet/tube bending in O or T4 and age afterwards — T6 has limited bend radius and springback is high.
What is the maximum service temperature of 6110-O?
6110-O is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 6110-O?
Yes — 6110-O is available for CNC machining and sheet metal with instant online pricing. 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 755-2 Aluminium extruded rod/bar, tube and profiles — mechanical properties — CEN (2016)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 19: Fatigue and Fracture — ASM International (1996)
- High-strength 6xxx automotive extrusion and forging alloy datasheets — Constellium / Alcoa (2020)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.