Aluminum EN AC-44000
EN AC-44000
EN AC-44000 (AlSi11) is a near-eutectic aluminium-silicon casting alloy in the EN 1706 (EN AC-) family, used as-cast in the F condition with no heat treatment.
Reference datasheet — EN AC-44000 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-K condition
EN AC-44000 tempers and conditions
EN AC-44000 is supplied in 3 conditions, soft to hard. F-K is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
S/F | Pick for large or low-volume castings; slower cooling coarsens the eutectic so strength and fatigue are slightly below chill-cast. | 75 | 170 | 8 | 48 HB | 148 W/m·K |
L/F | Use for thin-walled, near-net-shape precision castings where fluidity matters more than strength. | 75 | 170 | 8 | 48 HB | 25 % IACS |
F-KDefault K/F | Standard supply condition: gravity die (chill) cast and used as-cast — fastest solidification, best strength/ductility of the F conditions. | 85 | 190 | 9 | 50 HB | 25 % IACS |
What is EN AC-44000?
EN AC-44000 (AlSi11) is a near-eutectic aluminium-silicon casting alloy in the EN 1706 (EN AC-) family, used as-cast in the F condition with no heat treatment. High fluidity and pressure tightness make it a common choice for thin-walled, complex sand, gravity-die and investment castings; as-cast values are about 190 MPa tensile, 85 MPa yield, 9 % elongation, 50 HB and 150 W/m·K. Without Mg or Cu it cannot be age-hardened, service is limited to roughly 150 °C, and the abrasive eutectic silicon holds machinability to a moderate level. EN AC-44400 (AlSi9) is the nearest alternative for easier machining. EN AC-44000 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 574°C (1,065 °F). EN AC-44000 has a yield strength of 85 MPa (12.3 ksi) and a tensile strength of 190 MPa (27.6 ksi) — weaker than 88% of aluminum grades. Elongation at break is 9% and the elastic modulus is 72 GPa (10.4 Msi).
What is EN AC-44000 used for?
- thin-wall castings
- housings
- general purpose sand/permanent mold castings
Advantages
- Readily welded — 85/100, better than 79% of aluminum grades
Limitations
- Low electrical conductivity — 25 % IACS, worse than 92% of aluminum grades
- Low strength — 85 MPa (12.3 ksi), worse than 88% of aluminum grades
- Low fracture toughness — 17 MPa·√m (15.5 ksi·√in), worse than 83% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
EN AC-44000 properties
Typical room-temperature values for EN AC-44000-F-K; bars are the position among aluminum grades.
Physical3
EN AC-44000 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 574°C (1,065 °F).
Mechanical13
EN AC-44000 has a yield strength of 85 MPa (12.3 ksi) and a tensile strength of 190 MPa (27.6 ksi) — weaker than 88% of aluminum grades. Elongation at break is 9% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
EN AC-44000 is rated for continuous service to 150°C (302 °F). It conducts heat at 150 W/m·K (86.7 BTU/hr·ft·°F), better than 58% of aluminum grades. Thermal expansion is 20.5 µm/m·K (11.4 µin/in·°F).
Electrical3
EN AC-44000 conducts electricity at 25 % IACS, worse than 92% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), better than 62% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-44000 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 60%.
Manufacturability8
EN AC-44000's machinability is fair (45/100, worse than 72% of aluminum grades); weldability excellent (85/100); formability poor (15/100).
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-44000 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-44000
Is EN AC-44000 easy to machine?
Machines freely but the eutectic Si is abrasive — use polycrystalline-diamond or coated carbide, high speed, sharp positive rake and generous coolant to avoid built-up edge.
Can EN AC-44000 be welded?
Excellent TIG/MIG weldability with ER4047 or ER4043 filler; near-eutectic composition means very low hot-cracking risk, no post-weld heat treatment needed.
Can EN AC-44000 be formed, bent or molded?
Foundry alloy only — outstanding fluidity and pressure tightness for thin walls (down to ~2 mm) in sand, gravity die and investment moulds; Sr modification and Ti-B grain refinement recommended.
EN AC-44000 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 |
|---|---|---|
| Sinear-eutectic; Sr or Na modification usual | 10 – 11.8 | 11 |
| Felow Fe to avoid brittle β-AlFeSi platelets | ≤ 0.19 | 0.12 |
| Cu | ≤ 0.05 | |
| Mn | ≤ 0.1 | |
| Mgusually kept <0.10 when as-cast ductility is required | ≤ 0.45 | |
| Zn | ≤ 0.07 | |
| Tigrain refinement | ≤ 0.15 | 0.1 |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on EN AC-44000?
Chromate/chrome-free conversion coating or powder paint adheres well; anodizing gives a dark grey non-decorative film; polishing limited by Si pull-out.
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-44000 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-44000AlSi11
How much does EN AC-44000 cost?
EN AC-44000 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-44000 — frequently asked
What is EN AC-44000 used for?
EN AC-44000 is typically used for thin-wall castings, housings and general purpose sand/permanent mold castings. In short: top-fluidity casting alloy; weldable eutectic Al-Si; best ductility among AlSi11/12.
What is the yield strength of EN AC-44000?
EN AC-44000 has a typical yield strength of 85 MPa (12.3 ksi) and a tensile strength of 190 MPa (27.6 ksi) — weaker than 88% of aluminum grades. Strength varies by condition: see the 3 listed tempers.
Is EN AC-44000 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 72% of aluminum grades). Machines freely but the eutectic Si is abrasive — use polycrystalline-diamond or coated carbide, high speed, sharp positive rake and generous coolant to avoid built-up edge.
Can EN AC-44000 be welded?
Yes — weldability is rated excellent (85/100). Excellent TIG/MIG weldability with ER4047 or ER4043 filler; near-eutectic composition means very low hot-cracking risk, no post-weld heat treatment needed.
What surface finishes work on EN AC-44000?
Chromate/chrome-free conversion coating or powder paint adheres well; anodizing gives a dark grey non-decorative film; polishing limited by Si pull-out.
Can EN AC-44000 be formed, bent or molded?
Foundry alloy only — outstanding fluidity and pressure tightness for thin walls (down to ~2 mm) in sand, gravity die and investment moulds; Sr modification and Ti-B grain refinement recommended.
What is the maximum service temperature of EN AC-44000?
EN AC-44000 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-44000 F-K and EN AC-44000 F-S?
F-K is the default condition — standard supply condition: gravity die (chill) cast and used as-cast — fastest solidification, best strength/ductility of the F conditions. F-S: pick for large or low-volume castings; slower cooling coarsens the eutectic so strength and fatigue are slightly below chill-cast. Yield strength is 85 MPa in F-K versus 75 MPa in F-S.
How much does EN AC-44000 cost?
EN AC-44000 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 and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
- Primary foundry alloy datasheets (AlSi11 / Silafont family) — Rheinfelden Alloys (2019)
- European Aluminium — Aluminium Automotive Manual, casting alloys — European Aluminium Association (2011)
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.