Aluminum EN AC-46300
EN AC-46300
EN AC-46300 (AlSi7Cu3Mg, ZL107) is an Al-Si-Cu-Mg casting alloy in which roughly 3 % copper plus magnesium allow age hardening in T5, T6 and T7 on top of the as-cast F, F-S and F-D conditions.
Reference datasheet — EN AC-46300 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-46300 tempers and conditions
EN AC-46300 is supplied in 7 conditions, soft to hard. F is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
F | Sand-cast as-cast condition; coarser structure than gravity die so strength is roughly 25 % lower. | 110 | 190 | 1 | 80 HB | 27 % IACS |
FDefault As fabricated | Standard low-cost condition for gravity die castings where moderate strength is enough and no heat treatment budget exists. | 135 | 250 | 1 | 85 HB | 27 % IACS |
F | HPDC condition with fine chill structure — highest as-cast strength but porosity prevents solution heat treatment. | 160 | 270 | 1.5 | 90 HB | 26 % IACS |
Cooled from hot working and artificially aged | Cheap ageing-only treatment that raises yield strength and stabilises dimensions without distortion risk of solutionising. | 200 | 270 | 1 | 95 HB | 29 % IACS |
T6 | Heat-treated sand castings — strength well above as-cast but below gravity-die T6 because of coarser eutectic. | 205 | 245 | 0.7 | 100 HB | 25 % IACS |
Solution heat treated and overaged (stabilized) | Overaged for dimensional stability and slightly better ductility/conductivity in parts running warm (e.g. gearbox and pump housings). | 230 | 285 | 1.5 | 95 HB | 31 % IACS |
Solution heat treated and artificially aged | Peak-strength condition for gravity die castings — pick it when static strength and hardness matter more than ductility. | 285 | 330 | 0.7 | 110 HB | 24 % IACS |
What is EN AC-46300?
EN AC-46300 (AlSi7Cu3Mg, ZL107) is an Al-Si-Cu-Mg casting alloy in which roughly 3 % copper plus magnesium allow age hardening in T5, T6 and T7 on top of the as-cast F, F-S and F-D conditions. In the default condition it gives 135 MPa yield, 250 MPa tensile, 1 % elongation, 85 HB and 120 W/m·K, which suits structural gravity die and sand castings such as gearbox housings and brackets. Elongation is low, the copper reduces corrosion resistance and raises hot-cracking risk, and service is limited to about 175 °C. Where ductility and weldability matter more than strength, a copper-free AlSi7Mg casting alloy is the nearer choice. EN AC-46300 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 67% of aluminum grades. It melts at 520°C (968 °F). EN AC-46300 has a yield strength of 135 MPa (19.6 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 72% of aluminum grades. Elongation at break is 1% and the elastic modulus is 75 GPa (10.9 Msi).
What is EN AC-46300 used for?
- structural brackets
- gearbox housings
- engine components
Advantages
- Low embodied carbon — 9.5 kg CO₂/kg, better than 97% of aluminum grades
- High service temperature — 175°C (347 °F), better than 83% of aluminum grades
Limitations
- Limited ductility — 1%, worse than 95% of aluminum grades
- Limited formability — 5/100, worse than 94% of aluminum grades
- Low fracture toughness — 15 MPa·√m (13.7 ksi·√in), worse than 93% of aluminum grades
- Low electrical conductivity — 27 % IACS, worse than 86% of aluminum grades
- Poor heat conductor — 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades
EN AC-46300 properties
Typical room-temperature values for EN AC-46300-F; bars are the position among aluminum grades.
Physical3
EN AC-46300 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 67% of aluminum grades. It melts at 520°C (968 °F).
Mechanical14
EN AC-46300 has a yield strength of 135 MPa (19.6 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 72% of aluminum grades. Elongation at break is 1% and the elastic modulus is 75 GPa (10.9 Msi).
Thermal6
EN AC-46300 is rated for continuous service to 175°C (347 °F). It conducts heat at 120 W/m·K (69.3 BTU/hr·ft·°F), worse than 80% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
EN AC-46300 conducts electricity at 27 % IACS, worse than 86% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (42/100), worse than 69% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-46300 takes about 150 MJ of energy and emits 9.5 kg of CO₂ — less than 97% of aluminum grades. Typical recycled content is 80%.
Manufacturability8
EN AC-46300's machinability is good (65/100, better than 62% of aluminum grades); weldability poor (30/100); 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-46300 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-46300
Is EN AC-46300 easy to machine?
Machines freely with sharp positive-rake PCD or polished carbide tools; the 7 % Si plus Cu-rich phases abrade HSS quickly, so use PCD for high-volume work and flood coolant to avoid built-up edge.
Can EN AC-46300 be welded?
Poor fusion weldability — 3–4 % Cu makes the alloy hot-crack sensitive; repair welding with 4047/4145 filler and preheat only, and re-age afterwards if strength matters.
Can EN AC-46300 be formed, bent or molded?
Excellent gravity-die and sand castability with good fluidity and feeding; keep Fe below ~0.8 % and use Sr/Na modification plus Ti-B refinement, and avoid solution treatment on gas-porous HPDC parts (blistering).
EN AC-46300 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 | 6 – 8 | 7 |
| Cu | 3 – 4 | 3.5 |
| Mg | 0.3 – 0.6 | 0.45 |
| Mn | 0.15 – 0.65 | 0.35 |
| Feup to 1.0 % for high-pressure die castings | ≤ 0.8 | 0.5 |
| Zn | ≤ 0.65 | |
| Ni | ≤ 0.35 | |
| Tigrain refiner | ≤ 0.25 | 0.12 |
| Pb | ≤ 0.25 | |
| Sn | ≤ 0.15 | |
| Others (each)total 0.35 % max | ≤ 0.05 | |
| Al | balance |
What surface finishes work on EN AC-46300?
Best finished by painting, powder coat or chromate/trivalent conversion; decorative anodizing gives dark grey mottled films, hard anodizing is possible but thin and non-uniform over Si particles.
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-46300 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-46300AlSi7Cu3Mg
- Similar grades
- ZL107
How much does EN AC-46300 cost?
EN AC-46300 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-46300 — frequently asked
What is EN AC-46300 used for?
EN AC-46300 is typically used for structural brackets, gearbox housings and engine components. In short: strongest heat-treatable Al-Si-Cu; structural gravity-die alloy; low ductility, 1 % elongation.
What is the yield strength of EN AC-46300?
EN AC-46300 has a typical yield strength of 135 MPa (19.6 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 72% of aluminum grades. Strength varies by condition: see the 7 listed tempers.
Is EN AC-46300 easy to machine?
Reasonably — machinability is rated good (65/100, better than 62% of aluminum grades). Machines freely with sharp positive-rake PCD or polished carbide tools; the 7 % Si plus Cu-rich phases abrade HSS quickly, so use PCD for high-volume work and flood coolant to avoid built-up edge.
Can EN AC-46300 be welded?
Not readily — weldability is rated poor (30/100). Poor fusion weldability — 3–4 % Cu makes the alloy hot-crack sensitive; repair welding with 4047/4145 filler and preheat only, and re-age afterwards if strength matters.
What surface finishes work on EN AC-46300?
Best finished by painting, powder coat or chromate/trivalent conversion; decorative anodizing gives dark grey mottled films, hard anodizing is possible but thin and non-uniform over Si particles.
Can EN AC-46300 be formed, bent or molded?
Excellent gravity-die and sand castability with good fluidity and feeding; keep Fe below ~0.8 % and use Sr/Na modification plus Ti-B refinement, and avoid solution treatment on gas-porous HPDC parts (blistering).
What is the maximum service temperature of EN AC-46300?
EN AC-46300 is rated for continuous use to about 175°C (347 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between EN AC-46300-F and EN AC-46300-T6?
F is the default condition — standard low-cost condition for gravity die castings where moderate strength is enough and no heat treatment budget exists. T6: peak-strength condition for gravity die castings — pick it when static strength and hardness matter more than ductility. Yield strength is 135 MPa in F versus 285 MPa in T6.
How much does EN AC-46300 cost?
EN AC-46300 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)
- GB/T 1173 (ZL107 comparison) — SAC (2013)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- European foundry alloy datasheets for EN AC-46300 (AlSi7Cu3Mg) — various producers (2023)
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.