Aluminum EN AC-43100
EN AC-43100
EN AC-43100 (AlSi10Mg(b)) is a near-eutectic Al-Si-Mg casting alloy with tighter impurity limits than the (a) grade, which improves ductility and pressure tightness; it is close to A360.0.
Reference datasheet — EN AC-43100 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-43100 tempers and conditions
EN AC-43100 is supplied in 3 conditions, soft to hard. F 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 |
|---|---|---|---|---|---|---|
FDefault As fabricated | Default supply condition: use when dimensional stability and cost matter more than strength; die-cast sections reach the upper end of the range. | 110 | 200 | 2.5 | 60 HB | 39 % IACS |
Solution heat treated and under-aged | Under-aged compromise: about 85 % of T6 strength with roughly double the elongation and better impact tolerance, favoured for safety-relevant chassis and bracket castings. | 185 | 225 | 4 | 80 HB | 42 % IACS |
Solution heat treated and artificially aged | Pick for maximum strength and hardness in structural castings where 1–2 % elongation is acceptable; not applicable to conventional high-pressure die castings (blister risk). | 230 | 290 | 2 | 95 HB | 40 % IACS |
What is EN AC-43100?
EN AC-43100 (AlSi10Mg(b)) is a near-eutectic Al-Si-Mg casting alloy with tighter impurity limits than the (a) grade, which improves ductility and pressure tightness; it is close to A360.0. Typical as-cast values are 200 MPa tensile, 110 MPa yield, 2.5 % elongation and 60 HB, with 150 W/m·K thermal conductivity, supplied as sand, permanent-mould, low-pressure and die castings in F, T6 and T64. Service is limited to about 150 °C, conventional die castings should not be solution treated because of blistering, and decorative anodizing turns dull grey. EN AC-43500 (AlSi10MnMg) is the choice when higher elongation is required. EN AC-43100 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 557°C (1,035 °F). EN AC-43100 has a yield strength of 110 MPa (16 ksi) and a tensile strength of 200 MPa (29 ksi) — weaker than 81% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 71 GPa (10.3 Msi).
What is EN AC-43100 used for?
- automotive structural castings
- hydraulic housings
- pressure-tight components
Limitations
- Limited ductility — 2.5%, worse than 83% of aluminum grades
- Low fracture toughness — 17 MPa·√m (15.5 ksi·√in), worse than 83% of aluminum grades
- Low strength — 110 MPa (16 ksi), worse than 81% of aluminum grades
- Limited formability — 10/100, worse than 80% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
EN AC-43100 properties
Typical room-temperature values for EN AC-43100-F; bars are the position among aluminum grades.
Physical3
EN AC-43100 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 557°C (1,035 °F).
Mechanical14
EN AC-43100 has a yield strength of 110 MPa (16 ksi) and a tensile strength of 200 MPa (29 ksi) — weaker than 81% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
EN AC-43100 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-43100 conducts electricity at 39 % IACS, better than 65% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), better than 57% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-43100 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 55%.
Manufacturability8
EN AC-43100's machinability is fair (52/100, worse than 63% of aluminum grades); weldability good (65/100); 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-43100 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-43100
Is EN AC-43100 easy to machine?
Machines freely with sharp carbide or PCD tooling and high speeds, but eutectic silicon abrades HSS quickly; watch for porosity breakout in as-cast skin.
Can EN AC-43100 be welded?
TIG/MIG weldable with AlSi5 (4043) or AlSi12 filler; degas and localise heat, and re-solution/age if T6 properties are required across the joint.
Can EN AC-43100 be formed, bent or molded?
Excellent fluidity and pressure tightness for sand, permanent-mould, low-pressure and die casting; not intended for cold forming, and conventional die castings should not be solution treated because of blistering.
EN AC-43100 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 |
|---|---|---|
| Sieutectic-forming element, source of fluidity | 9 – 11 | 10 |
| MgMg2Si precipitation hardening | 0.2 – 0.45 | 0.3 |
| Feimpurity; forms brittle needles | ≤ 0.55 | 0.35 |
| Culimit differs from EN AC-43000 AlSi10Mg(a) | ≤ 0.1 | |
| Mn | ≤ 0.45 | |
| Ni | ≤ 0.05 | |
| Zn | ≤ 0.1 | |
| Pb | ≤ 0.05 | |
| Sn | ≤ 0.05 | |
| Tigrain refinement | ≤ 0.2 | |
| Others (each)total 0.15 max | ≤ 0.05 | |
| Al | balance |
What surface finishes work on EN AC-43100?
Takes chromate/phosphate conversion coatings and paint well; hard anodizing is effective but decorative anodizing turns dull grey because of the silicon phase.
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-43100 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-43100
- Similar grades
- A360.0
How much does EN AC-43100 cost?
EN AC-43100 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-43100 — frequently asked
What is EN AC-43100 used for?
EN AC-43100 is typically used for automotive structural castings, hydraulic housings and pressure-tight components. In short: high-purity AlSi10Mg variant; pressure-tight castings; better ductility than (a).
What is the yield strength of EN AC-43100?
EN AC-43100 has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 200 MPa (29 ksi) — weaker than 81% of aluminum grades. Strength varies by condition: see the 3 listed tempers.
Is EN AC-43100 easy to machine?
Reasonably — machinability is rated fair (52/100, worse than 63% of aluminum grades). Machines freely with sharp carbide or PCD tooling and high speeds, but eutectic silicon abrades HSS quickly; watch for porosity breakout in as-cast skin.
Can EN AC-43100 be welded?
Yes — weldability is rated good (65/100). TIG/MIG weldable with AlSi5 (4043) or AlSi12 filler; degas and localise heat, and re-solution/age if T6 properties are required across the joint.
What surface finishes work on EN AC-43100?
Takes chromate/phosphate conversion coatings and paint well; hard anodizing is effective but decorative anodizing turns dull grey because of the silicon phase.
Can EN AC-43100 be formed, bent or molded?
Excellent fluidity and pressure tightness for sand, permanent-mould, low-pressure and die casting; not intended for cold forming, and conventional die castings should not be solution treated because of blistering.
What is the maximum service temperature of EN AC-43100?
EN AC-43100 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-43100-F and EN AC-43100-T6?
F is the default condition — default supply condition: use when dimensional stability and cost matter more than strength; die-cast sections reach the upper end of the range. T6: pick for maximum strength and hardness in structural castings where 1–2 % elongation is acceptable; not applicable to conventional high-pressure die castings (blister risk). Yield strength is 110 MPa in F versus 230 MPa in T6.
How much does EN AC-43100 cost?
EN AC-43100 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 (A360.0 / AlSi10Mg data) — ASM International (1990)
- Aluminum Association Alloy and Temper Designations / Pink Sheets for casting alloys — The Aluminum Association (2018)
- Foundry alloy datasheets for AlSi10Mg (Rheinfelden / Trimet / Rio Tinto) — 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.