Aluminum ZL205A-F (As fabricated)
Temper
GB ZAlCu5MnCdVZr
As-cast, un-heat-treated stock — only for machining allowance blanks or before subsequent solution treatment.
Values for the F condition
Other ZL205A tempers and conditions
ZL205A is listed in 5 conditions; see the grade overview at ZL205A.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
FThis page As fabricated | As-cast, un-heat-treated stock — only for machining allowance blanks or before subsequent solution treatment. | 110 | 200 | 6 | 60 HB | 28 % IACS |
Solution heat treated and naturally aged | Best ductility/toughness combination; used when the casting must be straightened or lightly formed before final ageing. | 250 | 400 | 13 | 90 HB | 28 % IACS |
T5Default Cooled from hot working and artificially aged | The standard stocked condition: 440 MPa minimum with 7 % elongation — the best strength/ductility balance for structural castings. | 320 | 460 | 9 | 105 HB | 33 % IACS |
Solution heat treated and overaged (stabilized) | Over-aged/stabilised for dimensional stability and reduced residual stress in parts running warm or requiring tight tolerances. | 360 | 470 | 3 | 112 HB | 38 % IACS |
Solution heat treated and artificially aged | Peak-strength condition (≥470 MPa, HB≥120) for statically loaded parts where ductility can drop to ~3 %. | 380 | 490 | 5 | 125 HB | 36 % IACS |
What is ZL205A-F?
ZL205A-F is ZL205A in the F temper — as-cast, un-heat-treated stock — only for machining allowance blanks or before subsequent solution treatment. ZL205A-F has a yield strength of 110 MPa (16 ksi) and a tensile strength of 200 MPa (29 ksi) — weaker than 81% of aluminum grades. Elongation at break is 6% and the elastic modulus is 69 GPa (10 Msi). ZL205A-F has a density of 2.82 g/cm³ (0.102 lb/in³), heavier than 89% of aluminum grades. It melts at 545°C (1,013 °F). T5 is the default condition FabDigit quotes; F is available on request or by drawing note.
Limitations
- Needs corrosion protection — 27/100, worse than 100% of aluminum grades
- Limited formability — 8/100, worse than 88% of aluminum grades
- Low fracture toughness — 17 MPa·√m (15.5 ksi·√in), worse than 83% of aluminum grades
- Low electrical conductivity — 28 % IACS, worse than 82% of aluminum grades
- Low strength — 110 MPa (16 ksi), worse than 81% of aluminum grades
ZL205A-F properties
Typical room-temperature values for ZL205A-F; 22 are specific to this condition. Other listed values are ZL205A reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
ZL205A-F has a density of 2.82 g/cm³ (0.102 lb/in³), heavier than 89% of aluminum grades. It melts at 545°C (1,013 °F).
Mechanical14
ZL205A-F has a yield strength of 110 MPa (16 ksi) and a tensile strength of 200 MPa (29 ksi) — weaker than 81% of aluminum grades. Elongation at break is 6% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
ZL205A-F is rated for continuous service to 120°C (248 °F). It conducts heat at 130 W/m·K (75.1 BTU/hr·ft·°F), worse than 65% of aluminum grades. Thermal expansion is 22.5 µm/m·K (12.5 µin/in·°F).
Electrical3
ZL205A-F conducts electricity at 28 % IACS, worse than 82% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is poor (27/100), worse than 100% of aluminum grades.
Sustainability4
Producing a kilogram of ZL205A-F takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 10%.
Manufacturability8
ZL205A-F's machinability is good (60/100, worse than 51% of aluminum grades); weldability fair (50/100); formability not recommended (8/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ZL205A-F
Is ZL205A easy to machine?
Machines well in T5/T6 with sharp carbide tools, high speed and flood coolant; chips are short and surfaces finish cleanly.
Can ZL205A be welded?
TIG/MIG possible with matching ZL205A or Al-Cu filler but hot-crack sensitive — preheat, low restraint and post-weld solution + age are recommended.
Can ZL205A be formed, bent or molded?
Casting alloy with long freezing range: needs strong directional solidification, generous risering, chills and careful gating; poor fluidity for thin sections.
What surface finishes work on ZL205A?
Chromic/hard anodizing or chromate conversion plus primer is normal — bare surfaces corrode readily; painted or clad protection advised for outdoor service.
ZL205A 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 |
|---|---|---|
| Cu | 4.6 – 5.3 | 5 |
| Mn | 0.3 – 0.5 | 0.4 |
| Tigrain refiner | 0.15 – 0.35 | 0.25 |
| Cdaccelerates θ' nucleation | 0.15 – 0.25 | 0.2 |
| V | 0.05 – 0.3 | 0.15 |
| Zr | 0.05 – 0.2 | 0.15 |
| B | 0.01 – 0.06 | 0.03 |
| Siimpurity limit | ≤ 0.06 | — |
| Feimpurity limit | ≤ 0.15 | — |
| Mgimpurity limit | ≤ 0.05 | — |
| Znimpurity limit | ≤ 0.1 | — |
| Al | balance | — |
ZL205A-F — frequently asked
What is ZL205A-F used for?
ZL205A-F is typically used for aerospace castings, missile components and brackets. In short: premium aerospace Cu-Al cast; highest-strength cast Al.
What is the yield strength of ZL205A-F?
ZL205A-F has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 200 MPa (29 ksi) — weaker than 81% of aluminum grades. Strength varies by condition: see the 5 listed tempers.
Is ZL205A-F easy to machine?
Reasonably — machinability is rated good (60/100, worse than 51% of aluminum grades). Machines well in T5/T6 with sharp carbide tools, high speed and flood coolant; chips are short and surfaces finish cleanly.
Can ZL205A-F be welded?
With care — weldability is rated fair (50/100). TIG/MIG possible with matching ZL205A or Al-Cu filler but hot-crack sensitive — preheat, low restraint and post-weld solution + age are recommended.
What surface finishes work on ZL205A-F?
Chromic/hard anodizing or chromate conversion plus primer is normal — bare surfaces corrode readily; painted or clad protection advised for outdoor service.
Can ZL205A-F be formed, bent or molded?
Casting alloy with long freezing range: needs strong directional solidification, generous risering, chills and careful gating; poor fluidity for thin sections.
What is the maximum service temperature of ZL205A-F?
ZL205A-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 ZL205A-T5 and ZL205A-F?
T5 is the default condition — the standard stocked condition: 440 MPa minimum with 7 % elongation — the best strength/ductility balance for structural castings. F: as-cast, un-heat-treated stock — only for machining allowance blanks or before subsequent solution treatment. Yield strength is 320 MPa in T5 versus 110 MPa in F.
Can FabDigit make parts in ZL205A-F?
Yes — ZL205A-F is available for CNC machining; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
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.