Aluminum EN AC-45100
EN AC-45100
EN AC-45100 (AlSi5Cu3Mg, 319.0) is a copper- and magnesium-strengthened Al-Si sand and gravity casting alloy from the EN AC- cast aluminum family, supplied in F, T4 and T6.
Reference datasheet — EN AC-45100 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 T6 condition
EN AC-45100 tempers and conditions
EN AC-45100 is supplied in 3 conditions, soft to hard. T6 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 |
|---|---|---|---|---|---|---|
As fabricated | Cheapest condition for low-stress housings and brackets where dimensional stability matters more than strength. | 105 | 175 | 1.5 | 65 HB | 30 % IACS |
Solution heat treated and naturally aged | Choose when some ductility and impact tolerance is needed together with medium strength, e.g. bolted or press-fit castings. | 115 | 230 | 3.5 | 75 HB | 27 % IACS |
T6Default Solution heat treated and artificially aged | Standard condition for load-bearing castings needing maximum strength and hardness; accept very low elongation. | 215 | 260 | 1.2 | 100 HB | 30 % IACS |
What is EN AC-45100?
EN AC-45100 (AlSi5Cu3Mg, 319.0) is a copper- and magnesium-strengthened Al-Si sand and gravity casting alloy from the EN AC- cast aluminum family, supplied in F, T4 and T6. Engineers choose it for machined housings and pressure-carrying bodies: default-condition properties are 215 MPa yield, 260 MPa tensile, 100 HB, 75 GPa modulus and 130 W/m·K, with service to 200 °C and a machinability score of 74. The trade-offs are low ductility (1.2 % elongation), poor fusion weldability (score 35) and moderate corrosion resistance (43); where weld repair or better corrosion behaviour is required, EN AC-45300 (AlSi5Cu1Mg) is the nearest alternative. EN AC-45100 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 67% of aluminum grades. It melts at 525°C (977 °F). EN AC-45100 has a yield strength of 215 MPa (31.2 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 58% of aluminum grades. Elongation at break is 1.2% and the elastic modulus is 75 GPa (10.9 Msi).
What is EN AC-45100 used for?
- housings
- brackets
- pump bodies
- gearbox covers
Advantages
- Low embodied carbon — 4.2 kg CO₂/kg, better than 99% of aluminum grades
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
- Easy to machine — 74/100, better than 85% of aluminum grades
Limitations
- Limited formability — 5/100, worse than 94% of aluminum grades
- Limited ductility — 1.2%, worse than 93% of aluminum grades
- Low fracture toughness — 17 MPa·√m (15.5 ksi·√in), worse than 83% of aluminum grades
EN AC-45100 properties
Typical room-temperature values for EN AC-45100-T6; bars are the position among aluminum grades.
Physical3
EN AC-45100 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 67% of aluminum grades. It melts at 525°C (977 °F).
Mechanical14
EN AC-45100 has a yield strength of 215 MPa (31.2 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 58% of aluminum grades. Elongation at break is 1.2% and the elastic modulus is 75 GPa (10.9 Msi).
Thermal6
EN AC-45100 is rated for continuous service to 200°C (392 °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 µm/m·K (12.2 µin/in·°F).
Electrical3
EN AC-45100 conducts electricity at 30 % IACS, worse than 73% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (43/100), worse than 65% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-45100 takes about 55 MJ of energy and emits 4.2 kg of CO₂ — less than 100% of aluminum grades. Typical recycled content is 80%.
Manufacturability8
EN AC-45100's machinability is very good (74/100, better than 85% of aluminum grades); weldability fair (35/100); formability not recommended (5/100).
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-45100 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-45100
Is EN AC-45100 easy to machine?
Excellent machinability — Cu-bearing matrix gives clean chips; use PCD or polished-flute carbide at high speed and low feed to cope with abrasive eutectic Si.
Can EN AC-45100 be welded?
Poor fusion weldability due to ~3 % Cu (hot-crack and porosity prone); repair with 4145/4047-type filler, preheat 150–200 °C and re-heat-treat where properties matter.
Can EN AC-45100 be formed, bent or molded?
Sand and permanent-mould casting alloy with good flow and moderate hot-tear resistance; degas and grain-refine/modify the melt, avoid cold forming entirely.
EN AC-45100 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 | 4.5 – 6 | 5.2 |
| Cu | 2.6 – 3.6 | 3.1 |
| Mg | 0.15 – 0.45 | 0.3 |
| Fe0.55 max typical for permanent-mould/high-integrity castings | ≤ 0.8 | 0.5 |
| Mn | ≤ 0.55 | 0.3 |
| Zn | ≤ 0.55 | 0.2 |
| Ni | ≤ 0.35 | |
| Tigrain refiner | ≤ 0.25 | 0.12 |
| Pb | ≤ 0.15 | |
| Sn | ≤ 0.05 | |
| others (each / total)0.05 each, 0.15 total | ≤ 0.15 | |
| Al | balance |
What surface finishes work on EN AC-45100?
Takes chromate conversion, primer and paint well; hard anodize gives a dark grey film only, so use plating or powder coating for decorative parts.
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-45100 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-45100AlSi5Cu3Mg
- Also called
- ZAlSi5Cu3Mg
- Similar grades
- 319.0
How much does EN AC-45100 cost?
EN AC-45100 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-45100 — frequently asked
What is EN AC-45100 used for?
EN AC-45100 is typically used for housings, brackets, pump bodies and gearbox covers. In short: high-machinability cast aluminum; 200 °C service capability; weak weldability versus Al-Si.
What is the yield strength of EN AC-45100?
EN AC-45100 has a typical yield strength of 215 MPa (31.2 ksi) and a tensile strength of 260 MPa (37.7 ksi) — stronger than 58% of aluminum grades. Strength varies by condition: see the 3 listed tempers.
Is EN AC-45100 easy to machine?
Yes — machinability is rated very good (74/100, better than 85% of aluminum grades). Excellent machinability — Cu-bearing matrix gives clean chips; use PCD or polished-flute carbide at high speed and low feed to cope with abrasive eutectic Si.
Can EN AC-45100 be welded?
With care — weldability is rated fair (35/100). Poor fusion weldability due to ~3 % Cu (hot-crack and porosity prone); repair with 4145/4047-type filler, preheat 150–200 °C and re-heat-treat where properties matter.
What surface finishes work on EN AC-45100?
Takes chromate conversion, primer and paint well; hard anodize gives a dark grey film only, so use plating or powder coating for decorative parts.
Can EN AC-45100 be formed, bent or molded?
Sand and permanent-mould casting alloy with good flow and moderate hot-tear resistance; degas and grain-refine/modify the melt, avoid cold forming entirely.
What is the maximum service temperature of EN AC-45100?
EN AC-45100 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between EN AC-45100-T6 and EN AC-45100-F?
T6 is the default condition — standard condition for load-bearing castings needing maximum strength and hardness; accept very low elongation. F: cheapest condition for low-stress housings and brackets where dimensional stability matters more than strength. Yield strength is 215 MPa in T6 versus 105 MPa in F.
How much does EN AC-45100 cost?
EN AC-45100 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 data) — ASM International (1990)
- GB/T 1173 (ZL105 comparison) — SAC (2013)
- Aluminium casting alloy property tables — European Aluminium / foundry association data (2019)
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.