Aluminum 710.0-T5
Temper · default condition
AA 710.0 · UNS A07100 · also ZG61B
T5 = cooled from hot working and artificially aged
Most commonly supplied condition — a short low-temperature age stabilises dimensions and locks in full strength without solution treatment or quench distortion.
Values for the T5 condition
Other 710.0 tempers and conditions
710.0 is listed in 3 conditions; see the grade overview at 710.0.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Use for castings machined and put in service immediately after shakeout, before natural ageing has completed. | 125 | 205 | 6 | 60 HB | 33 % IACS |
T5DefaultThis page Cooled from hot working and artificially aged | Most commonly supplied condition — a short low-temperature age stabilises dimensions and locks in full strength without solution treatment or quench distortion. | 170 | 240 | 5 | 75 HB | 35 % IACS |
Cooled from hot working and naturally aged | Standard low-cost condition: the alloy self-ages at room temperature over several weeks to near-T5 strength with no furnace time. | 170 | 240 | 5 | 75 HB | 35 % IACS |
What is 710.0-T5?
710.0-T5 is 710.0 in the T5 temper — most commonly supplied condition — a short low-temperature age stabilises dimensions and locks in full strength without solution treatment or quench distortion. 710.0-T5 has a yield strength of 170 MPa (24.7 ksi) and a tensile strength of 240 MPa (34.8 ksi) — weaker than 56% of aluminum grades. Elongation at break is 5% and the elastic modulus is 71 GPa (10.3 Msi). 710.0-T5 has a density of 2.81 g/cm³ (0.102 lb/in³), heavier than 86% of aluminum grades. It melts at 600°C (1,112 °F).
Advantages
- Easy to machine — 85/100, better than 95% of aluminum grades
- Polishes to a fine finish — 70/100, better than 87% of aluminum grades
Limitations
- Limited formability — 7/100, worse than 89% of aluminum grades
- Difficult to weld — 22/100, worse than 83% of aluminum grades
710.0-T5 properties
Typical room-temperature values for 710.0-T5; 20 are specific to this condition. Other listed values are 710.0 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
710.0-T5 has a density of 2.81 g/cm³ (0.102 lb/in³), heavier than 86% of aluminum grades. It melts at 600°C (1,112 °F).
Mechanical15
710.0-T5 has a yield strength of 170 MPa (24.7 ksi) and a tensile strength of 240 MPa (34.8 ksi) — weaker than 56% of aluminum grades. Elongation at break is 5% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
710.0-T5 is rated for continuous service to 150°C (302 °F). It conducts heat at 142 W/m·K (82 BTU/hr·ft·°F), better than 51% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
710.0-T5 conducts electricity at 35 % IACS, better than 52% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (48/100), worse than 58% of aluminum grades.
Sustainability4
Producing a kilogram of 710.0-T5 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 60%.
Manufacturability7
710.0-T5's machinability is excellent (85/100, better than 95% of aluminum grades); weldability poor (22/100); formability not recommended (7/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 710.0-T5
Is 710.0 easy to machine?
One of the best-machining cast aluminium alloys — free-cutting chips, sharp corners and good finish at high speed with sharp carbide and light lubrication.
Can 710.0 be welded?
Poor fusion weldability; the high-Zn matrix is hot-crack and porosity prone, so repairs are usually mechanical rather than welded.
Can 710.0 be formed, bent or molded?
Sand casting only (permanent-mould use is served by 711.0); needs generous risering and controlled cooling to avoid hot tears, and gains strength without a solution-treat/quench cycle so distortion is minimal.
What surface finishes work on 710.0?
Machines and polishes well; anodizes to a fair, slightly dull clear film — paint or chromate/anodize plus sealing is advised for chloride environments to limit SCC risk.
710.0 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 | — |
| Fe | ≤ 0.5 | — |
| Cu | 0.35 – 0.65 | 0.5 |
| Mn | ≤ 0.05 | — |
| Mg | 0.6 – 0.8 | 0.7 |
| Cr | ≤ 0.05 | — |
| Zn | 6 – 7 | 6.5 |
| Timax, grain refiner | ≤ 0.25 | — |
| Others (each)each | ≤ 0.05 | — |
| Others (total)total | ≤ 0.15 | — |
| Al | balance | — |
710.0-T5 — frequently asked
What is 710.0-T5 used for?
710.0-T5 is typically used for machinery parts, hardware castings and fittings. In short: best-machining cast aluminum; no solution treatment needed; sand-cast Al-Zn-Cu.
What is the yield strength of 710.0-T5?
710.0-T5 has a typical yield strength of 170 MPa (24.7 ksi) and a tensile strength of 240 MPa (34.8 ksi) — weaker than 56% of aluminum grades. Strength varies by condition: see the 3 listed tempers.
Is 710.0-T5 easy to machine?
Yes — machinability is rated excellent (85/100, better than 95% of aluminum grades). One of the best-machining cast aluminium alloys — free-cutting chips, sharp corners and good finish at high speed with sharp carbide and light lubrication.
Can 710.0-T5 be welded?
Not readily — weldability is rated poor (22/100). Poor fusion weldability; the high-Zn matrix is hot-crack and porosity prone, so repairs are usually mechanical rather than welded.
What surface finishes work on 710.0-T5?
Machines and polishes well; anodizes to a fair, slightly dull clear film — paint or chromate/anodize plus sealing is advised for chloride environments to limit SCC risk.
Can 710.0-T5 be formed, bent or molded?
Sand casting only (permanent-mould use is served by 711.0); needs generous risering and controlled cooling to avoid hot tears, and gains strength without a solution-treat/quench cycle so distortion is minimal.
What is the maximum service temperature of 710.0-T5?
710.0-T5 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.
What is the difference between 710.0-T5 and 710.0-F?
T5 is the default condition — most commonly supplied condition — a short low-temperature age stabilises dimensions and locks in full strength without solution treatment or quench distortion. F: use for castings machined and put in service immediately after shakeout, before natural ageing has completed. Yield strength is 170 MPa in T5 versus 125 MPa in F.
Sources
- ASTM B26/B26M — Aluminum-Alloy Sand Castings — ASTM International (2018)
- Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (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. 15 — Casting — ASM International (2008)
- ASM Specialty Handbook: Aluminum and Aluminum Alloys — ASM International (1993)
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.