Magnesium Alloy AZ80A · temper · default condition
Magnesium Alloy AZ80A-F
Properties of the F condition, compared with the other AZ80A tempers.
Default stock condition for AZ80A bar, profile and forgings when maximum ductility and lowest cost are wanted.
What is AZ80A-F?
AZ80A-F is AZ80A in the F temper — default stock condition for AZ80A bar, profile and forgings when maximum ductility and lowest cost are wanted. AZ80A-F has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 340 MPa (49.3 ksi) — stronger than 97% of magnesium alloy grades. Elongation at break is 11% and the elastic modulus is 45 GPa (6.53 Msi). AZ80A-F has a density of 1.8 g/cm³ (0.065 lb/in³), lighter than 63% of magnesium alloy grades. It melts at 490°C (914 °F).
Advantages
- High strength — 250 MPa (36.3 ksi), better than 97% of magnesium alloy grades
Limitations
- Low electrical conductivity — 11.5 % IACS, worse than 93% of magnesium alloy grades
- Limited service temperature — 120°C (248 °F), worse than 78% of magnesium alloy grades
AZ80A-F properties
Typical room-temperature values for AZ80A-F — 9 properties are specific to this condition; the rest are grade-level values shared by every AZ80A temper. Each bar shows where the value sits among the magnesium alloy grades in FabDigit's library — further right is higher.
Physical3
AZ80A-F has a density of 1.8 g/cm³ (0.065 lb/in³), lighter than 63% of magnesium alloy grades. It melts at 490°C (914 °F).
Mechanical13
AZ80A-F has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 340 MPa (49.3 ksi) — stronger than 97% of magnesium alloy grades. Elongation at break is 11% and the elastic modulus is 45 GPa (6.53 Msi).
Thermal6
AZ80A-F is rated for continuous service to 120°C (248 °F). It conducts heat at 78 W/m·K (45.1 BTU/hr·ft·°F), worse than 58% of magnesium alloy grades. Thermal expansion is 26 µm/m·K (14.4 µin/in·°F).
Electrical3
AZ80A-F conducts electricity at 11.5 % IACS, worse than 93% of magnesium alloy grades.
Chemical & Environmental3
Corrosion resistance is poor (20/100), worse than 77% of magnesium alloy grades.
Sustainability4
Producing a kilogram of AZ80A-F takes about 330 MJ of energy and emits 27 kg of CO₂ — less than 56% of magnesium alloy grades. Typical recycled content is 20%.
Manufacturability7
AZ80A-F's machinability is excellent (98/100, better than 96% of magnesium alloy grades); weldability fair (45/100); formability poor (18/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other AZ80A tempers and conditions
AZ80A is also supplied in 3 other conditions. The full side-by-side table is on the AZ80A overview.
- FDefaultDefault stock condition for AZ80A bar, profile and forgings when maximum ductility and lowest cost are wanted.250 MPa yield · 60 HB
- T5Standard strengthened temper for AZ80A extrusions and forgings; highest yield strength at the cost of ductility and some SCC sensitivity.275 MPa yield · 72 HB
- As ExtrudedPick for long constant-section parts; strength is directional and slightly higher than forgings in the extrusion direction.250 MPa yield · 60 HB
Working with AZ80A-F
Is AZ80A easy to machine?
Outstanding machinability at high speed with sharp positive-rake tooling and light dry or mineral-oil cutting — never water-based coolant; collect fines wet-free and keep class-D extinguisher on hand for fire risk.
Can AZ80A be welded?
GTAW/GMAW with AZ61A or AZ92A filler is feasible but the 8.5 % Al content makes AZ80A prone to stress-corrosion cracking, so post-weld stress relief (~260 °C, 15 min for T5, or 315 °C for F) is required; preheat thick sections and avoid rigid restraint.
Can AZ80A be formed, bent or molded?
Cold forming is very limited (HCP slip); bend, forge and roll hot at 290–400 °C with generous radii, then re-age to T5; extrusion speeds are low compared with AZ31B.
What surface finishes work on AZ80A?
Clean, then apply a magnesium conversion coating (chrome-free or chromate per ASTM D1732) or Dow 17/HAE anodic coating plus epoxy primer and topcoat; insulate all steel/aluminium fasteners to prevent galvanic attack.
AZ80A 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 |
|---|---|---|
| Al | 7.8 – 9.2 | 8.5 |
| Zn | 0.2 – 0.8 | 0.5 |
| Mn0.12 % min for corrosion control | 0.12 – 0.5 | 0.2 |
| Si | ≤ 0.1 | — |
| Cu | ≤ 0.05 | — |
| Ni | ≤ 0.01 | — |
| Fe | ≤ 0.01 | — |
| Others (each/total)0.30 % total max | ≤ 0.3 | — |
| Mg | balance | — |
AZ80A-F — frequently asked
What is AZ80A-F used for?
AZ80A-F is typically used for aircraft wheels and frame fittings, helicopter gearbox housings, forged aerospace structural brackets, high-load extruded profiles, missile and defence airframe components and racing suspension uprights. In short: forging magnesium alloy.
What is the yield strength of AZ80A-F?
AZ80A-F has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 340 MPa (49.3 ksi) — stronger than 97% of magnesium alloy grades. Strength varies by condition: see the 4 listed tempers.
Is AZ80A-F easy to machine?
Yes — machinability is rated excellent (98/100, better than 96% of magnesium alloy grades). Outstanding machinability at high speed with sharp positive-rake tooling and light dry or mineral-oil cutting — never water-based coolant; collect fines wet-free and keep class-D extinguisher on hand for fire risk.
Can AZ80A-F be welded?
With care — weldability is rated fair (45/100). GTAW/GMAW with AZ61A or AZ92A filler is feasible but the 8.5 % Al content makes AZ80A prone to stress-corrosion cracking, so post-weld stress relief (~260 °C, 15 min for T5, or 315 °C for F) is required; preheat thick sections and avoid rigid restraint.
What surface finishes work on AZ80A-F?
Clean, then apply a magnesium conversion coating (chrome-free or chromate per ASTM D1732) or Dow 17/HAE anodic coating plus epoxy primer and topcoat; insulate all steel/aluminium fasteners to prevent galvanic attack.
Can AZ80A-F be formed, bent or molded?
Cold forming is very limited (HCP slip); bend, forge and roll hot at 290–400 °C with generous radii, then re-age to T5; extrusion speeds are low compared with AZ31B.
What is the maximum service temperature of AZ80A-F?
AZ80A-F 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 AZ80A-F and AZ80A-T5?
F is the default condition — default stock condition for AZ80A bar, profile and forgings when maximum ductility and lowest cost are wanted. T5: standard strengthened temper for AZ80A extrusions and forgings; highest yield strength at the cost of ductility and some SCC sensitivity. Yield strength is 250 MPa in F versus 275 MPa in T5.
Can FabDigit make parts in AZ80A-F?
Yes — AZ80A-F 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
- ASTM B107/B107M — Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes and Wire — ASTM International (2021)
- ASTM B91 — Magnesium-Alloy Forgings — ASTM International (2017)
- ASTM B275 — Codification of Certain Nonferrous Metals and Alloys (UNS M11800) — ASTM International (2017)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials (Magnesium) — ASM International (1990)
- MMPDS-2023, Chapter 4 — Magnesium Alloys — Battelle/FAA (2023)
- ASM Specialty Handbook: Magnesium and Magnesium Alloys — ASM International (1999)
- GB/T 5153 (AZ80A/M2M series) — SAC (2016)
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.