Aluminum A413
AA A413 · UNS A14130 · EN AlSi12 die cast
A413 (A413.0) is a near-eutectic Al–Si die casting alloy with 11–13 % silicon, giving very high fluidity for thin-walled, complex, dense castings along with good hot-tear resistance and pressure tightness.
A413 tempers and conditions
A413 is supplied in one standard condition, F.
What is A413?
A413 (A413.0) is a near-eutectic Al–Si die casting alloy with 11–13 % silicon, giving very high fluidity for thin-walled, complex, dense castings along with good hot-tear resistance and pressure tightness. It is used for pump housings, valve bodies, oil pans, sealed enclosures and large thin-wall structural castings, and is normally supplied as-cast (F). Hard primary silicon wears tooling so machinability is only fair, anodizing comes out dark and uneven grey, and die-cast porosity makes heat treatment and fusion welding impractical. A380 is the usual alternative when machinability matters more. A413 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). A413 has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 73% of aluminum grades. Elongation at break is 3.5% and the elastic modulus is 71 GPa (10.3 Msi).
What is A413 used for?
- Pressure castings
- Marine fittings
- Pumps
Limitations
- Low fracture toughness — 17 MPa·√m (15.5 ksi·√in), worse than 83% of aluminum grades
- Difficult to machine — 40/100, worse than 81% of aluminum grades
- Limited formability — 10/100, worse than 80% of aluminum grades
- Limited ductility — 3.5%, worse than 76% of aluminum grades
- Poor heat conductor — 121 W/m·K (69.9 BTU/hr·ft·°F), worse than 76% of aluminum grades
A413 properties
Typical room-temperature values; bars are the position among aluminum grades.
Physical3
A413 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
A413 has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 73% of aluminum grades. Elongation at break is 3.5% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
A413 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
A413 conducts electricity at 31 % IACS, worse than 68% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), better than 57% of aluminum grades.
Sustainability4
Producing a kilogram of A413 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 85%.
Manufacturability8
A413's machinability is fair (40/100, worse than 81% of aluminum grades); weldability fair (45/100); 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. A413 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with A413
Is A413 easy to machine?
Abrasive eutectic silicon demands PCD or diamond-coated carbide tooling, high speed with low feed, and flood coolant; chips are short and it drills/taps acceptably but tool life is far below 6061.
Can A413 be welded?
Base alloy is fusion-weldable with 4047/4043 filler, but high-pressure die castings contain entrapped gas — expect porosity and blistering; prefer mechanical joining, adhesive bonding or friction-stir/laser for thin sections.
Can A413 be formed, bent or molded?
High-pressure die casting alloy with outstanding fluidity, low shrinkage and excellent hot-tear resistance — ideal for thin walls (≥1 mm) and pressure-tight housings; not intended for heat treatment or cold forming.
Manufacturability
The process limits FabDigit applies to A413. Every A413 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
CNC machining
| Machinability | Better40 / 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 |
A413 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, gives fluidity | 11 – 13 | 12 |
| Fedie-cast limit; aids die release | ≤ 1.3 | 0.8 |
| Cu | ≤ 1 | 0.3 |
| Mn | ≤ 0.35 | 0.2 |
| Mg | ≤ 0.1 | 0.05 |
| Ni | ≤ 0.5 | 0.1 |
| Zn | ≤ 0.5 | 0.2 |
| Sn | ≤ 0.15 | |
| Others (each)ASTM B85 A413.0 limits | ≤ 0.25 | |
| Al | balance |
What surface finishes work on A413?
Anodizes to a dark, uneven grey because of the silicon phase; use chromate/phosphate conversion coating, e-coat, powder coat or electroless nickel for appearance and corrosion protection.
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 A413 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A14130
- EN / DIN / Werkstoff-Nr.
- AlSi12 die cast
- Also called
- S12A
How much does A413 cost?
A413 is a budget-cost aluminum ($), cheaper than about 83% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
A413 — frequently asked
What is A413 used for?
A413 is typically used for pressure castings, marine fittings and pumps. In short: eutectic Al-Si die cast.
What is the yield strength of A413?
A413 has a typical yield strength of 130 MPa (18.9 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 73% of aluminum grades.
Is A413 easy to machine?
Not especially — machinability is rated fair (40/100, worse than 81% of aluminum grades). Abrasive eutectic silicon demands PCD or diamond-coated carbide tooling, high speed with low feed, and flood coolant; chips are short and it drills/taps acceptably but tool life is far below 6061.
Can A413 be welded?
With care — weldability is rated fair (45/100). Base alloy is fusion-weldable with 4047/4043 filler, but high-pressure die castings contain entrapped gas — expect porosity and blistering; prefer mechanical joining, adhesive bonding or friction-stir/laser for thin sections.
What surface finishes work on A413?
Anodizes to a dark, uneven grey because of the silicon phase; use chromate/phosphate conversion coating, e-coat, powder coat or electroless nickel for appearance and corrosion protection.
Can A413 be formed, bent or molded?
High-pressure die casting alloy with outstanding fluidity, low shrinkage and excellent hot-tear resistance — ideal for thin walls (≥1 mm) and pressure-tight housings; not intended for heat treatment or cold forming.
What is the maximum service temperature of A413?
A413 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does A413 cost?
A413 is a budget-cost aluminum ($), 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 A413?
Yes — A413 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 (Pink 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)
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.