Aluminum 7116
AA 7116 · EN AlZn4.5Mg1Cu0.8
7116 (AlZn4.5Mg1Cu0.8) is a copper-bearing Al-Zn-Mg extrusion alloy that trades the weldability of the 7020 family for higher strength in press-quenched profiles.
Reference datasheet — 7116 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 T5 condition
7116 tempers and conditions
7116 is supplied in 8 conditions, soft to hard. T5 is the default FabDigit quotes; the values on this page are for it.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition for severe cold forming or machining before re-heat-treatment. | 110 | 225 | 17 | 62 HB | 45 % IACS |
As fabricated | Mill state straight off the press, bought only for re-solutionising or further processing. | 200 | 300 | 16 | 85 HB | 32 % IACS |
Solution heat treated and naturally aged | Formable intermediate state for bending or hydroforming before a final artificial age. | 225 | 345 | 18 | 95 HB | 31 % IACS |
Solution heat treated and overaged (stabilized) | Overaged condition trading ~10 % strength for markedly better stress-corrosion and exfoliation resistance in chloride service. | 330 | 385 | 13 | 115 HB | 40 % IACS |
T5, stress relieved by compression | T5 with a compressive stress-relief pass for profiles that must stay straight after machining. | 350 | 395 | 12 | 118 HB | 35 % IACS |
T5Default Cooled from hot working and artificially aged | The standard commercial condition: press-quenched profiles aged directly, giving near-T6 strength without a separate solution furnace. | 355 | 400 | 12 | 120 HB | 35 % IACS |
T6, stress relieved by stretching, minor straightening | Peak-aged extrusion with stretch stress relief — pick it when tight straightness and low machining distortion are required. | 385 | 430 | 11 | 130 HB | 33 % IACS |
Solution heat treated and artificially aged | Highest-strength condition for separately solution-treated parts where maximum static load capacity matters. | 390 | 435 | 11 | 132 HB | 33 % IACS |
What is 7116?
7116 (AlZn4.5Mg1Cu0.8) is a copper-bearing Al-Zn-Mg extrusion alloy that trades the weldability of the 7020 family for higher strength in press-quenched profiles. Default values are 355 MPa yield, 400 MPa tensile, 12 % elongation and 120 HB, with machinability rated 62/100 and thermal conductivity of 155 W/m·K; tempers on file are F, O, T4, T5, T52, T6, T6511 and T7. The 0.8 % Cu makes fusion welding hot-crack prone, corrosion resistance is 45/100, formability 35/100, and service is capped at 120 °C. Use 7108A or 7204 where welded joints are required. 7116 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 81% of aluminum grades. It melts at 585°C (1,085 °F). 7116 has a yield strength of 355 MPa (51.5 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 84% of aluminum grades. Elongation at break is 12% and the elastic modulus is 70 GPa (10.2 Msi).
What is 7116 used for?
- Structural extrusions
- Transport and trailer frames
- Riveted vehicle structures
- Bolted machine frames
- Load-bearing profiles and rails
- Machined structural fittings
- Sporting goods tubing
Advantages
- High strength — 355 MPa (51.5 ksi), better than 84% of aluminum grades
Limitations
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
7116 properties
Typical room-temperature values for 7116-T5; bars are the position among aluminum grades.
Physical3
7116 has a density of 2.8 g/cm³ (0.101 lb/in³), heavier than 81% of aluminum grades. It melts at 585°C (1,085 °F).
Mechanical15
7116 has a yield strength of 355 MPa (51.5 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 84% of aluminum grades. Elongation at break is 12% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
7116 is rated for continuous service to 120°C (248 °F). It conducts heat at 155 W/m·K (89.6 BTU/hr·ft·°F), better than 71% of aluminum grades. Thermal expansion is 23.4 µm/m·K (13 µin/in·°F).
Electrical3
7116 conducts electricity at 35 % IACS, better than 52% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 62% of aluminum grades.
Sustainability4
Producing a kilogram of 7116 takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 25%.
Manufacturability7
7116's machinability is good (62/100, better than 55% of aluminum grades); weldability fair (40/100); formability fair (35/100).
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. 7116 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 7116
Is 7116 easy to machine?
Machines cleanly in T5/T6 with sharp polished-flute carbide, high surface speed and air/mist or flood coolant; chips are short and free of the gumminess of soft tempers.
Can 7116 be welded?
Copper content makes fusion welding hot-crack prone and drops HAZ strength sharply — prefer mechanical joining, riveting, adhesive bonding or FSW; if arc welded use 5356 filler and re-age where possible.
Can 7116 be formed, bent or molded?
Extrudes well and press-quenches to T5; bend and hydroform in F/T4 with generous radii (≥3t in T5) since aged tempers have limited cold ductility.
7116 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 | ≤ 0.15 | 0.07 |
| Fe | ≤ 0.3 | 0.15 |
| Custrengthening + SCC control | 0.5 – 1.1 | 0.8 |
| Mn | ≤ 0.05 | 0.02 |
| Mg | 0.8 – 1.4 | 1.1 |
| Cr | ≤ 0.05 | 0.02 |
| Zn | 4.2 – 5.2 | 4.7 |
| Tigrain refiner, max | ≤ 0.05 | 0.02 |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Albalance; limits per AA registration record for 7116 — verify against current Teal Sheets | balance |
What surface finishes work on 7116?
Takes clear and hard sulfuric anodizing, chromate/trivalent conversion coating and powder paint well; expect a grey-yellow anodic cast and avoid bright decorative anodize.
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 7116 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AlZn4.5Mg1Cu0.8
- Also called
- 7116-T5
How much does 7116 cost?
7116 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.
7116 — frequently asked
What is 7116 used for?
7116 is typically used for structural extrusions, transport and trailer frames, riveted vehicle structures, bolted machine frames, load-bearing profiles and rails and machined structural fittings. In short: stronger than 7020 family; cu-bearing, not weldable; good machining in T6.
What is the yield strength of 7116?
7116 has a typical yield strength of 355 MPa (51.5 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 84% of aluminum grades. Strength varies by condition: see the 8 listed tempers.
Is 7116 easy to machine?
Reasonably — machinability is rated good (62/100, better than 55% of aluminum grades). Machines cleanly in T5/T6 with sharp polished-flute carbide, high surface speed and air/mist or flood coolant; chips are short and free of the gumminess of soft tempers.
Can 7116 be welded?
With care — weldability is rated fair (40/100). Copper content makes fusion welding hot-crack prone and drops HAZ strength sharply — prefer mechanical joining, riveting, adhesive bonding or FSW; if arc welded use 5356 filler and re-age where possible.
What surface finishes work on 7116?
Takes clear and hard sulfuric anodizing, chromate/trivalent conversion coating and powder paint well; expect a grey-yellow anodic cast and avoid bright decorative anodize.
Can 7116 be formed, bent or molded?
Extrudes well and press-quenches to T5; bend and hydroform in F/T4 with generous radii (≥3t in T5) since aged tempers have limited cold ductility.
What is the maximum service temperature of 7116?
7116 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 7116-T5 and 7116-O?
T5 is the default condition — the standard commercial condition: press-quenched profiles aged directly, giving near-T6 strength without a separate solution furnace. O: softest condition for severe cold forming or machining before re-heat-treatment. Yield strength is 355 MPa in T5 versus 110 MPa in O.
How much does 7116 cost?
7116 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)
- ASM Handbook Vol.2: Properties and Selection — Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol.13B: Corrosion — Materials (aluminium alloys) — ASM International (2005)
- ASTM B221 — Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles and Tubes — ASTM International (2021)
- Al-Zn-Mg-Cu crash-management extrusion alloy datasheets (7016/7116 family) — Extrusion producers (2020)
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.