Aluminum EN AC-43300
EN AC-43300
EN AC-43300 (AlSi9Mg) is a heat-treatable Al-Si-Mg casting alloy, close to A360.0, chosen when strength, ductility and pressure tightness must be balanced.
Reference datasheet — EN AC-43300 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-43300 tempers and conditions
EN AC-43300 is supplied in 4 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Pick when the part is dimensionally critical or gas-porous (die cast) and moderate strength is enough — no solution-treatment blistering or distortion risk. | 95 | 180 | 3 | 60 HB | 39 % IACS |
Cooled from hot working and artificially aged | Low-distortion compromise for die castings: some Mg2Si strengthening and dimensional stabilisation without a full solution soak and quench. | 150 | 210 | 2.5 | 72 HB | 39 % IACS |
Solution heat treated and under-aged | Choose when crash ductility, energy absorption or self-piercing riveting/joining of the casting is required — trades ~15 % strength for roughly 50 % more elongation than T6. | 180 | 250 | 6 | 80 HB | 42 % IACS |
T6Default Solution heat treated and artificially aged | Standard high-strength condition for structural chassis and powertrain castings where peak yield strength and hardness matter more than elongation. | 210 | 290 | 4 | 90 HB | 39 % IACS |
What is EN AC-43300?
EN AC-43300 (AlSi9Mg) is a heat-treatable Al-Si-Mg casting alloy, close to A360.0, chosen when strength, ductility and pressure tightness must be balanced. In the default heat-treated condition it reaches 290 MPa tensile, 210 MPa yield, 4 % elongation and 90 HB, with 73 GPa modulus and 150 W/m·K, and it is cast by permanent-mould, low-pressure and high-vacuum die casting for chassis and powertrain parts. Service is limited to about 150 °C, gas content must be kept low if the casting is to be solution treated, and anodized films are grey. EN AC-43500 (AlSi10MnMg) gives higher as-cast elongation. EN AC-43300 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 557°C (1,035 °F). EN AC-43300 has a yield strength of 210 MPa (30.5 ksi) and a tensile strength of 290 MPa (42.1 ksi) — stronger than 56% of aluminum grades. Elongation at break is 4% and the elastic modulus is 73 GPa (10.6 Msi).
What is EN AC-43300 used for?
- chassis components
- powertrain housings
- structural die castings
EN AC-43300 properties
Typical room-temperature values for EN AC-43300-T6; bars are the position among aluminum grades.
Physical3
EN AC-43300 has a density of 2.65 g/cm³ (0.0957 lb/in³), lighter than 90% of aluminum grades. It melts at 557°C (1,035 °F).
Mechanical14
EN AC-43300 has a yield strength of 210 MPa (30.5 ksi) and a tensile strength of 290 MPa (42.1 ksi) — stronger than 56% of aluminum grades. Elongation at break is 4% and the elastic modulus is 73 GPa (10.6 Msi).
Thermal6
EN AC-43300 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 21 µm/m·K (11.7 µin/in·°F).
Electrical3
EN AC-43300 conducts electricity at 39 % IACS, better than 65% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), better than 62% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-43300 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 40%.
Manufacturability8
EN AC-43300's machinability is good (62/100, better than 55% of aluminum grades); weldability very good (75/100); 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-43300 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-43300
Is EN AC-43300 easy to machine?
Machines freely with sharp positive-rake PCD or polished carbide and flood coolant; eutectic silicon abrades HSS quickly, so use high speed, high feed and avoid built-up edge.
Can EN AC-43300 be welded?
Good TIG/MIG weldability with 4043 or 4047 filler; re-age or locally re-heat-treat after welding since the weld HAZ loses T6 strength, and outgassing porosity is a risk on die castings.
Can EN AC-43300 be formed, bent or molded?
Excellent fluidity and low hot-tearing tendency for thin-wall permanent-mould, low-pressure and high-vacuum die casting; keep gas content low (degassing, vacuum) if the part must be solution treated to avoid blistering.
EN AC-43300 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 |
|---|---|---|
| Siprimary strengthener, gives fluidity | 9 – 10 | 9.5 |
| MgMg2Si precipitation on ageing | 0.25 – 0.45 | 0.35 |
| Felow-Fe primary-metal grade; limits brittle β-AlFeSi | ≤ 0.19 | 0.12 |
| Cukept low for corrosion resistance | ≤ 0.05 | |
| Mn | ≤ 0.1 | |
| Zn | ≤ 0.07 | |
| Tigrain refinement | 0.08 – 0.15 | 0.12 |
| Others (each) | ≤ 0.03 | |
| Others (total) | ≤ 0.1 | |
| Al | balance |
What surface finishes work on EN AC-43300?
Takes protective/hard anodizing, chromate-free conversion coats, e-coat and powder paint well; bright decorative anodize is mottled grey due to Si, and polishing leaves a slightly grey lustre.
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-43300 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-43300AlSi9Mg
- Similar grades
- A360.0ZL104
How much does EN AC-43300 cost?
EN AC-43300 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-43300 — frequently asked
What is EN AC-43300 used for?
EN AC-43300 is typically used for chassis components, powertrain housings and structural die castings. In short: balanced strength and ductility; heat-treatable die-casting alloy; automotive chassis standard.
What is the yield strength of EN AC-43300?
EN AC-43300 has a typical yield strength of 210 MPa (30.5 ksi) and a tensile strength of 290 MPa (42.1 ksi) — stronger than 56% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is EN AC-43300 easy to machine?
Reasonably — machinability is rated good (62/100, better than 55% of aluminum grades). Machines freely with sharp positive-rake PCD or polished carbide and flood coolant; eutectic silicon abrades HSS quickly, so use high speed, high feed and avoid built-up edge.
Can EN AC-43300 be welded?
Yes — weldability is rated very good (75/100). Good TIG/MIG weldability with 4043 or 4047 filler; re-age or locally re-heat-treat after welding since the weld HAZ loses T6 strength, and outgassing porosity is a risk on die castings.
What surface finishes work on EN AC-43300?
Takes protective/hard anodizing, chromate-free conversion coats, e-coat and powder paint well; bright decorative anodize is mottled grey due to Si, and polishing leaves a slightly grey lustre.
Can EN AC-43300 be formed, bent or molded?
Excellent fluidity and low hot-tearing tendency for thin-wall permanent-mould, low-pressure and high-vacuum die casting; keep gas content low (degassing, vacuum) if the part must be solution treated to avoid blistering.
What is the maximum service temperature of EN AC-43300?
EN AC-43300 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-43300-T6 and EN AC-43300-F?
T6 is the default condition — standard high-strength condition for structural chassis and powertrain castings where peak yield strength and hardness matter more than elongation. F: pick when the part is dimensionally critical or gas-porous (die cast) and moderate strength is enough — no solution-treatment blistering or distortion risk. Yield strength is 210 MPa in T6 versus 95 MPa in F.
How much does EN AC-43300 cost?
EN AC-43300 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 — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
- GB/T 1173 (ZL104) — SAC (2013)
- Primary Al-Si9Mg foundry alloy datasheets (Rheinfelden/Trimet/Rio Tinto class) — various producers (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.