Aluminum 413
AA 413 · UNS A04130 · ASTM S12B · EN AlSi12 · BS LM6
413 (AA 413.0 / A413.0, UNS A04130, ZL102) is a near-eutectic Al–12Si die-casting alloy whose 11–13 % silicon gives it the best fluidity and hot-tear resistance in the aluminium family, suited to thin-wall, large-area and geometrically complex castings.
413 tempers and conditions
413 is supplied in one standard condition, F.
What is 413?
413 (AA 413.0 / A413.0, UNS A04130, ZL102) is a near-eutectic Al–12Si die-casting alloy whose 11–13 % silicon gives it the best fluidity and hot-tear resistance in the aluminium family, suited to thin-wall, large-area and geometrically complex castings. As-cast (F) it reaches about 300 MPa tensile strength with good pressure tightness and thermal conductivity, which is why it is used for pump and gearbox housings, motor end covers and electrical and heat-sink enclosures. Limits are low elongation (about 2.5 %), no response to heat treatment, high tool wear from the silicon phase, and dark, patchy anodising. 413 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 574°C (1,065 °F). 413 has a yield strength of 145 MPa (21 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 68% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 71 GPa (10.3 Msi).
What is 413 used for?
- Pressure-tight die castings
- Pump housings
- Gearbox and transmission housings
- Electric motor end covers
- Heat sinks and cooled enclosures
- Electrical and electronic housings
- Thin-wall appliance housings
Limitations
- High embodied carbon — 14 kg CO₂/kg, worse than 95% of aluminum grades
- Limited formability — 5/100, worse than 94% of aluminum grades
- 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
- Poor heat conductor — 121 W/m·K (69.9 BTU/hr·ft·°F), worse than 76% of aluminum grades
413 properties
Typical room-temperature values; bars are the position among aluminum grades.
Physical3
413 has a density of 2.66 g/cm³ (0.0961 lb/in³), lighter than 84% of aluminum grades. It melts at 574°C (1,065 °F).
Mechanical13
413 has a yield strength of 145 MPa (21 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 68% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
413 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
413 conducts electricity at 31 % IACS, worse than 68% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 51% of aluminum grades.
Sustainability4
Producing a kilogram of 413 takes about 200 MJ of energy and emits 14 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 85%.
Manufacturability7
413's machinability is fair (50/100, worse than 65% of aluminum grades); weldability fair (40/100); 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. 413 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 413
Is 413 easy to machine?
Machines to good finish with PCD or diamond-coated carbide at high speed and generous coolant; the 12% Si eutectic is abrasive, so expect 2–5× the tool wear of 6061.
Can 413 be welded?
TIG/MIG possible with 4047/4043 filler but entrapped die-cast gas causes porosity and blistering; prefer mechanical joining or adhesive, and pressure-test welded assemblies.
Can 413 be formed, bent or molded?
High-pressure die casting alloy with the best fluidity in the Al family — supports 1–2 mm walls and long flow paths; keep uniform wall thickness, generous fillets and vacuum/venting for pressure-tight parts; not heat treatable.
Manufacturability
The process limits FabDigit applies to 413. Every 413 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
CNC machining
| Machinability | Better50 / 100 |
|---|---|
| ISO material group | N.1 |
| Cutting speed (rough / finish) | 350 / 420 m/min |
| Minimum wall | 0.5 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 8× diameter |
| Best surface (machined / polished) | Ra 0.8 / — |
| Hardenable after machining | No |
413 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; source of fluidity | 11 – 13 | 12 |
| Fe1.3 max for A413.0 | ≤ 2 | 1 |
| Cu | ≤ 1 | 0.3 |
| Mn | ≤ 0.35 | |
| Mg | ≤ 0.1 | |
| Ni | ≤ 0.5 | |
| Zn | ≤ 0.5 | |
| Sn | ≤ 0.15 | |
| Others (total)others each 0.05 max per AA/ASTM B85 | ≤ 0.25 | |
| Al | balance |
What surface finishes work on 413?
Anodizing gives a dark grey, patchy film — specify chromate/trivalent conversion, e-coat, powder coat or plating instead; shot blast or vibratory finish removes flash lines before painting.
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).
Passivation
Conversion Coating
PVD Coating
Equivalent designations
Standards and trade names that resolve to Aluminum 413 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
How much does 413 cost?
413 is a budget-cost aluminum ($), cheaper than about 83% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
413 — frequently asked
What is 413 used for?
413 is typically used for pressure-tight die castings, pump housings, gearbox and transmission housings, electric motor end covers, heat sinks and cooled enclosures and electrical and electronic housings. In short: eutectic Al-Si cast.
What is the yield strength of 413?
413 has a typical yield strength of 145 MPa (21 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 68% of aluminum grades.
Is 413 easy to machine?
Reasonably — machinability is rated fair (50/100, worse than 65% of aluminum grades). Machines to good finish with PCD or diamond-coated carbide at high speed and generous coolant; the 12% Si eutectic is abrasive, so expect 2–5× the tool wear of 6061.
Can 413 be welded?
With care — weldability is rated fair (40/100). TIG/MIG possible with 4047/4043 filler but entrapped die-cast gas causes porosity and blistering; prefer mechanical joining or adhesive, and pressure-test welded assemblies.
What surface finishes work on 413?
Anodizing gives a dark grey, patchy film — specify chromate/trivalent conversion, e-coat, powder coat or plating instead; shot blast or vibratory finish removes flash lines before painting.
Can 413 be formed, bent or molded?
High-pressure die casting alloy with the best fluidity in the Al family — supports 1–2 mm walls and long flow paths; keep uniform wall thickness, generous fillets and vacuum/venting for pressure-tight parts; not heat treatable.
What is the maximum service temperature of 413?
413 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 413 cost?
413 is a budget-cost aluminum ($), cheaper than about 83% 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.
Can FabDigit make parts in 413?
Yes — 413 is available for CNC machining; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B85/B85M — Aluminum-Alloy Die Castings — ASTM International (2018)
- Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Specialty Handbook: Aluminum and Aluminum Alloys — ASM International (1993)
- ADC12/AlSi12 (2025)
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.