Aluminum EN AC-44300
EN AC-44300
EN AC-44300 (AlSi12(Fe)(a)) is an iron-tolerant eutectic AlSi12 alloy for high-pressure die casting, where the raised iron level reduces soldering to the die; it is supplied and used in the as-cast F condition.
Reference datasheet — EN AC-44300 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-44300 tempers and conditions
EN AC-44300 is supplied in one standard condition, F. F is the default FabDigit quotes; the values on this page are for it.
What is EN AC-44300?
EN AC-44300 (AlSi12(Fe)(a)) is an iron-tolerant eutectic AlSi12 alloy for high-pressure die casting, where the raised iron level reduces soldering to the die; it is supplied and used in the as-cast F condition. Typical values are 260 MPa tensile, 140 MPa yield, 2 % elongation, 60 HB, 121 W/m·K and 31 % IACS. Iron-bearing intermetallics cut ductility and weldability, thermal conductivity is below that of low-iron AlSi12, and service temperature stays near 150 °C. EN AC-44100 (AlSi12(b)) is the low-iron alternative when ductility or conductivity matters. EN AC-44300 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-44300 has a yield strength of 140 MPa (20.3 ksi) and a tensile strength of 260 MPa (37.7 ksi) — weaker than 70% of aluminum grades. Elongation at break is 2% and the elastic modulus is 71 GPa (10.3 Msi).
What is EN AC-44300 used for?
- high-volume die castings
- housings
- automotive brackets
Limitations
- Low fracture toughness — 15 MPa·√m (13.7 ksi·√in), worse than 93% of aluminum grades
- Hard to polish — 40/100, worse than 91% of aluminum grades
- Limited ductility — 2%, worse than 87% of aluminum grades
- Difficult to machine — 40/100, worse than 81% of aluminum grades
- Limited formability — 10/100, worse than 80% of aluminum grades
EN AC-44300 properties
Typical room-temperature values for EN AC-44300-F; bars are the position among aluminum grades.
Physical3
EN AC-44300 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).
Mechanical14
EN AC-44300 has a yield strength of 140 MPa (20.3 ksi) and a tensile strength of 260 MPa (37.7 ksi) — weaker than 70% of aluminum grades. Elongation at break is 2% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
EN AC-44300 is rated for continuous service to 150°C (302 °F). It conducts heat at 121 W/m·K (69.9 BTU/hr·ft·°F), worse than 76% of aluminum grades. Thermal expansion is 20.4 µm/m·K (11.3 µin/in·°F).
Electrical3
EN AC-44300 conducts electricity at 31 % IACS, worse than 68% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), better than 57% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-44300 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 90%.
Manufacturability8
EN AC-44300's machinability is fair (40/100, worse than 81% of aluminum grades); weldability fair (35/100); formability not recommended (10/100).
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-44300 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-44300
Is EN AC-44300 easy to machine?
Use PCD or diamond-coated carbide with high speed and flood coolant — the eutectic Si is highly abrasive and gummy chips can weld to uncoated tools.
Can EN AC-44300 be welded?
TIG/MIG with ER4047 filler works metallurgically, but high-pressure die castings blister from entrapped gas; prefer vacuum/high-integrity castings or mechanical joining.
Can EN AC-44300 be formed, bent or molded?
Excellent HPDC fluidity for walls down to ~1 mm; keep die temperature and gate velocity controlled and avoid heat treatment above ~250 °C to prevent blistering.
EN AC-44300 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, gives fluidity | 10.5 – 13.5 | 12 |
| Fedeliberately raised to suppress die soldering | 0.45 – 1 | 0.7 |
| Cu | ≤ 0.1 | |
| Mn | ≤ 0.55 | |
| Mg | ≤ 0.05 | |
| Ni | ≤ 0.15 | |
| Zn | ≤ 0.15 | |
| Pb | ≤ 0.1 | |
| Sn | ≤ 0.05 | |
| Ti | ≤ 0.15 | |
| Others (each/total)each 0.05 / total 0.15 | ≤ 0.15 | |
| Al | balance |
What surface finishes work on EN AC-44300?
Chromate-free conversion coating, powder coat or paint for corrosion protection; decorative anodizing is not recommended (dark grey film), hard anodize only for wear.
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-44300 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-44300
How much does EN AC-44300 cost?
EN AC-44300 is a standard-cost aluminum ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
EN AC-44300 — frequently asked
What is EN AC-44300 used for?
EN AC-44300 is typically used for high-volume die castings, housings and automotive brackets. In short: iron-tolerant die-casting alloy; reduced die soldering; long die life, high volume.
What is the yield strength of EN AC-44300?
EN AC-44300 has a typical yield strength of 140 MPa (20.3 ksi) and a tensile strength of 260 MPa (37.7 ksi) — weaker than 70% of aluminum grades.
Is EN AC-44300 easy to machine?
Not especially — machinability is rated fair (40/100, worse than 81% of aluminum grades). Use PCD or diamond-coated carbide with high speed and flood coolant — the eutectic Si is highly abrasive and gummy chips can weld to uncoated tools.
Can EN AC-44300 be welded?
With care — weldability is rated fair (35/100). TIG/MIG with ER4047 filler works metallurgically, but high-pressure die castings blister from entrapped gas; prefer vacuum/high-integrity castings or mechanical joining.
What surface finishes work on EN AC-44300?
Chromate-free conversion coating, powder coat or paint for corrosion protection; decorative anodizing is not recommended (dark grey film), hard anodize only for wear.
Can EN AC-44300 be formed, bent or molded?
Excellent HPDC fluidity for walls down to ~1 mm; keep die temperature and gate velocity controlled and avoid heat treatment above ~250 °C to prevent blistering.
What is the maximum service temperature of EN AC-44300?
EN AC-44300 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does EN AC-44300 cost?
EN AC-44300 is a standard-cost aluminum ($$), 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 (413.0/A413.0 data) — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
- European die-casting alloy datasheets for AlSi12(Fe) — Rheinfelden Alloys / Trimet (2022)
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.