Aluminum EN AC-45000
EN AC-45000
EN AC-45000 (AlSi6Cu4, equivalent to A319.0) is an Al-Si-Cu casting alloy in which 3–5 % copper raises strength and machinability above plain Al-Si-Mg grades; F, F (K), T5, T6 and T7 conditions are on file.
Reference datasheet — EN AC-45000 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 F condition
EN AC-45000 tempers and conditions
EN AC-45000 is supplied in 5 conditions, soft to hard. F is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
FDefault As fabricated | Default, cheapest condition: general machinery, housings and covers where moderate strength and good machinability suffice. | 100 | 170 | 1.5 | 70 HB | 27 % IACS |
As-cast, permanent (chill) mould | Same as-cast chemistry but chill-cast: finer structure gives ~20% higher strength and hardness at equal cost per part in volume. | 115 | 200 | 2 | 80 HB | 27 % IACS |
Cooled from hot working and artificially aged | Low-cost ageing only (no solution treatment): raises yield and hardness and stabilises dimensions without distortion risk. | 140 | 205 | 1.5 | 80 HB | 28 % IACS |
Solution heat treated and overaged (stabilized) | Over-aged for dimensional and thermal stability at elevated temperature, trading ~15% strength versus T6. | 150 | 215 | 2.5 | 80 HB | 28 % IACS |
Solution heat treated and artificially aged | Highest strength and hardness condition; pick for loaded brackets, pump/engine parts, but expect quench distortion and no ductility gain. | 175 | 250 | 2 | 90 HB | 26 % IACS |
What is EN AC-45000?
EN AC-45000 (AlSi6Cu4, equivalent to A319.0) is an Al-Si-Cu casting alloy in which 3–5 % copper raises strength and machinability above plain Al-Si-Mg grades; F, F (K), T5, T6 and T7 conditions are on file. As-cast values are 170 MPa tensile, 100 MPa yield, 1.5 % elongation, 70 HB, 109 W/m·K and 27 % IACS, with the best machinability rating in this Al-Si group. Copper lowers corrosion resistance and promotes hot cracking, so it is not suited to structural fusion welding, and service is limited to about 150 °C. Use an AlSi7Mg grade where corrosion resistance or weldability governs. EN AC-45000 has a density of 2.77 g/cm³ (0.1 lb/in³), heavier than 71% of aluminum grades. It melts at 520°C (968 °F). EN AC-45000 has a yield strength of 100 MPa (14.5 ksi) and a tensile strength of 170 MPa (24.7 ksi) — weaker than 84% of aluminum grades. Elongation at break is 1.5% and the elastic modulus is 74 GPa (10.7 Msi).
What is EN AC-45000 used for?
- engine components
- cylinder heads
- general castings requiring machinability
Limitations
- Limited ductility — 1.5%, worse than 91% of aluminum grades
- Hard to polish — 40/100, worse than 91% of aluminum grades
- Poor heat conductor — 109 W/m·K (63 BTU/hr·ft·°F), worse than 90% of aluminum grades
- Low electrical conductivity — 27 % IACS, worse than 86% of aluminum grades
- Needs corrosion protection — 35/100, worse than 85% of aluminum grades
EN AC-45000 properties
Typical room-temperature values for EN AC-45000-F; bars are the position among aluminum grades.
Physical3
EN AC-45000 has a density of 2.77 g/cm³ (0.1 lb/in³), heavier than 71% of aluminum grades. It melts at 520°C (968 °F).
Mechanical13
EN AC-45000 has a yield strength of 100 MPa (14.5 ksi) and a tensile strength of 170 MPa (24.7 ksi) — weaker than 84% of aluminum grades. Elongation at break is 1.5% and the elastic modulus is 74 GPa (10.7 Msi).
Thermal6
EN AC-45000 is rated for continuous service to 150°C (302 °F). It conducts heat at 109 W/m·K (63 BTU/hr·ft·°F), worse than 90% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
EN AC-45000 conducts electricity at 27 % IACS, worse than 86% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (35/100), worse than 85% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-45000 takes about 190 MJ of energy and emits 12 kg of CO₂ — less than 89% of aluminum grades. Typical recycled content is 85%.
Manufacturability6
EN AC-45000's machinability is very good (70/100, better than 72% of aluminum grades); weldability poor (25/100).
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. EN AC-45000 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-45000
Is EN AC-45000 easy to machine?
Machines well with carbide or PCD (Si is abrasive) — high speeds, sharp positive-rake tools, flood coolant; Cu-bearing matrix breaks chips better than AlSi7Mg.
Can EN AC-45000 be welded?
Not recommended for structural fusion welding — the 3–5% Cu causes hot cracking and porosity; repair by TIG with 4145/4047 filler or use mechanical joining/adhesives.
Can EN AC-45000 be formed, bent or molded?
Good fluidity for sand, permanent-mould and low-pressure casting; use chills and directional solidification to control shrinkage porosity, Sr/Na modification plus Ti-B refinement for better properties.
EN AC-45000 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 | 5 – 7 | 6 |
| Cu | 3 – 5 | 4 |
| Feimpurity limit; higher Fe cuts ductility | ≤ 1 | 0.6 |
| Mn | 0.2 – 0.65 | 0.4 |
| Mg | ≤ 0.55 | 0.2 |
| Zntolerated from secondary scrap | ≤ 2 | 0.5 |
| Ni | ≤ 0.45 | |
| Tigrain refiner | ≤ 0.25 | 0.1 |
| Pb | ≤ 0.3 | |
| Sn | ≤ 0.15 | |
| Others (each)total ≤ 0.15 | ≤ 0.05 | |
| Al | balance |
What surface finishes work on EN AC-45000?
Anodizing gives dark, non-uniform films (Cu + Si) — prefer chromate/phosphate conversion, powder coat or paint; can be electroless-nickel or zinc plated after careful pre-etch.
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 EN AC-45000 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-45000AlSi6Cu4
- Similar grades
- A319.0
How much does EN AC-45000 cost?
EN AC-45000 is a standard-cost aluminum ($$), cheaper than about 71% 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.
EN AC-45000 — frequently asked
What is EN AC-45000 used for?
EN AC-45000 is typically used for engine components, cylinder heads and general castings requiring machinability. In short: best-machining Al-Si casting alloy; heat-treatable Al-Si-Cu; lower corrosion resistance than AlSi7Mg.
What is the yield strength of EN AC-45000?
EN AC-45000 has a typical yield strength of 100 MPa (14.5 ksi) and a tensile strength of 170 MPa (24.7 ksi) — weaker than 84% of aluminum grades. Strength varies by condition: see the 5 listed tempers.
Is EN AC-45000 easy to machine?
Yes — machinability is rated very good (70/100, better than 72% of aluminum grades). Machines well with carbide or PCD (Si is abrasive) — high speeds, sharp positive-rake tools, flood coolant; Cu-bearing matrix breaks chips better than AlSi7Mg.
Can EN AC-45000 be welded?
Not readily — weldability is rated poor (25/100). Not recommended for structural fusion welding — the 3–5% Cu causes hot cracking and porosity; repair by TIG with 4145/4047 filler or use mechanical joining/adhesives.
What surface finishes work on EN AC-45000?
Anodizing gives dark, non-uniform films (Cu + Si) — prefer chromate/phosphate conversion, powder coat or paint; can be electroless-nickel or zinc plated after careful pre-etch.
Can EN AC-45000 be formed, bent or molded?
Good fluidity for sand, permanent-mould and low-pressure casting; use chills and directional solidification to control shrinkage porosity, Sr/Na modification plus Ti-B refinement for better properties.
What is the maximum service temperature of EN AC-45000?
EN AC-45000 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 EN AC-45000-F and EN AC-45000-T6?
F is the default condition — default, cheapest condition: general machinery, housings and covers where moderate strength and good machinability suffice. T6: highest strength and hardness condition; pick for loaded brackets, pump/engine parts, but expect quench distortion and no ductility gain. Yield strength is 100 MPa in F versus 175 MPa in T6.
How much does EN AC-45000 cost?
EN AC-45000 is a standard-cost aluminum ($$), cheaper than about 71% 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
- EN 1706 — Aluminium and aluminium alloys: castings, chemical composition and mechanical properties — CEN (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys (319.0/A319.0 data) — ASM International (1990)
- ASTM B26/B26M — Aluminum-Alloy Sand Castings; ASTM B108 — Permanent Mold Castings — ASTM (2018)
- Aluminum Association registered casting alloy data (319.0 series) — The Aluminum Association (2015)
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.