Aluminum EN AC-45200
EN AC-45200
A eutectic-near Al-Si-Cu-Mn casting alloy from the EN 1706 45xxx family, offering a balance of castability, moderate strength and pressure-tightness for die and sand cast components; the Mn addition improves die-soldering resistance versus straight AlSi5Cu3 grades.
Reference datasheet — EN AC-45200 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 K F condition
EN AC-45200 tempers and conditions
EN AC-45200 is supplied in 7 conditions, soft to hard. K 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 |
|---|---|---|---|---|---|---|
Sand cast, as-cast | Lowest-cost condition for sand-cast housings where only moderate strength is required. | 70 | 140 | 1 | 60 HB | 27 % IACS |
K FDefault Permanent (chill) mould cast, as-cast | Standard stocked condition: chill-cast parts, finer structure and higher strength than sand cast without heat treatment. | 80 | 160 | 1 | 60 HB | 28 % IACS |
Sand cast, solution treated and naturally aged | Choose when higher strength is needed together with the best ductility this alloy can offer. | 110 | 230 | 3 | 80 HB | 25 % IACS |
Permanent mould cast, solution treated and naturally aged | Chill-cast T4 for parts needing strength plus some deformation tolerance (e.g. crimped or staked features). | 120 | 250 | 3 | 85 HB | 26 % IACS |
Pressure die cast, as-cast | Foundry practice for high-pressure die casting of this composition; Mn reduces die soldering, but porosity limits heat treatment. | 130 | 210 | 1.5 | 75 HB | 25 % IACS |
Sand cast, solution treated and artificially aged | Highest yield strength and hardness in sand castings; accept elongation below 1 %. | 200 | 230 | 0.5 | 90 HB | 31 % IACS |
Permanent mould cast, solution treated and artificially aged | Peak-strength condition of the alloy for chill-cast, machined pressure-tight parts. | 210 | 250 | 0.5 | 100 HB | 32 % IACS |
What is EN AC-45200?
A eutectic-near Al-Si-Cu-Mn casting alloy from the EN 1706 45xxx family, offering a balance of castability, moderate strength and pressure-tightness for die and sand cast components; the Mn addition improves die-soldering resistance versus straight AlSi5Cu3 grades. EN AC-45200 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 67% of aluminum grades. It melts at 525°C (977 °F). EN AC-45200 has a yield strength of 80 MPa (11.6 ksi) and a tensile strength of 160 MPa (23.2 ksi) — weaker than 90% of aluminum grades. Elongation at break is 1% and the elastic modulus is 75 GPa (10.9 Msi).
What is EN AC-45200 used for?
- automotive housings
- pump and compressor bodies
- hydraulic fittings
- general die-cast structural parts
Limitations
- Limited ductility — 1%, worse than 95% of aluminum grades
- Limited formability — 5/100, worse than 94% of aluminum grades
- Hard to polish — 40/100, worse than 91% of aluminum grades
- Low strength — 80 MPa (11.6 ksi), worse than 90% of aluminum grades
- Low fracture toughness — 17 MPa·√m (15.5 ksi·√in), worse than 83% of aluminum grades
EN AC-45200 properties
Typical room-temperature values for EN AC-45200-K F; bars are the position among aluminum grades.
Physical3
EN AC-45200 has a density of 2.75 g/cm³ (0.0994 lb/in³), heavier than 67% of aluminum grades. It melts at 525°C (977 °F).
Mechanical16
EN AC-45200 has a yield strength of 80 MPa (11.6 ksi) and a tensile strength of 160 MPa (23.2 ksi) — weaker than 90% of aluminum grades. Elongation at break is 1% and the elastic modulus is 75 GPa (10.9 Msi).
Thermal6
EN AC-45200 is rated for continuous service to 150°C (302 °F). It conducts heat at 125 W/m·K (72.2 BTU/hr·ft·°F), worse than 72% of aluminum grades. Thermal expansion is 22 µm/m·K (12.2 µin/in·°F).
Electrical3
EN AC-45200 conducts electricity at 28 % IACS, worse than 82% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (42/100), worse than 69% of aluminum grades.
Sustainability4
Producing a kilogram of EN AC-45200 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 80%.
Manufacturability8
EN AC-45200'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-45200 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-45200
Is EN AC-45200 easy to machine?
Machines freely with sharp PCD/carbide tooling and good chip evacuation; the Cu-rich phases give short chips, but eutectic Si is abrasive so use polished-flute tools and coolant.
Can EN AC-45200 be welded?
Poor fusion weldability — 3 % Cu gives hot cracking and loss of aged strength; repair by TIG with 4043/4145 filler only on non-critical, non-pressure areas.
Can EN AC-45200 be formed, bent or molded?
Casting alloy only: good fluidity for sand and permanent-mould work with moderate shrinkage; degas and grain-refine/Sr-modify the melt, use directional solidification and generous risers for pressure-tight walls.
EN AC-45200 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 | 4.5 – 6 | 5.3 |
| Cu | 2.6 – 3.6 | 3.1 |
| Mnimproves Fe tolerance and reduces die soldering | 0.2 – 0.55 | 0.35 |
| Fehigher limit applies to die-cast product | ≤ 0.8 | 0.5 |
| Mg | ≤ 0.15 | |
| Ni | ≤ 0.45 | |
| Zn | ≤ 0.55 | |
| Ti | ≤ 0.25 | |
| Pb | ≤ 0.15 | |
| Sn | ≤ 0.15 | |
| Others (each)total 0.15 max | ≤ 0.05 | |
| Al | balance |
What surface finishes work on EN AC-45200?
Best finished by chromate-free conversion coating plus paint or powder coat; hard anodizing works for wear but decorative anodizing turns dark/mottled, and copper content demands careful pretreatment before plating.
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-45200 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-45200AlSi5Cu3Mn
How much does EN AC-45200 cost?
EN AC-45200 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-45200 — frequently asked
What is EN AC-45200 used for?
EN AC-45200 is typically used for automotive housings, pump and compressor bodies, hydraulic fittings and general die-cast structural parts. In short: pressure-tight Al-Si-Cu casting; good-machining cast aluminum; improved die-soldering resistance.
What is the yield strength of EN AC-45200?
EN AC-45200 has a typical yield strength of 80 MPa (11.6 ksi) and a tensile strength of 160 MPa (23.2 ksi) — weaker than 90% of aluminum grades. Strength varies by condition: see the 7 listed tempers.
Is EN AC-45200 easy to machine?
Reasonably — machinability is rated good (65/100, better than 62% of aluminum grades). Machines freely with sharp PCD/carbide tooling and good chip evacuation; the Cu-rich phases give short chips, but eutectic Si is abrasive so use polished-flute tools and coolant.
Can EN AC-45200 be welded?
Not readily — weldability is rated poor (30/100). Poor fusion weldability — 3 % Cu gives hot cracking and loss of aged strength; repair by TIG with 4043/4145 filler only on non-critical, non-pressure areas.
What surface finishes work on EN AC-45200?
Best finished by chromate-free conversion coating plus paint or powder coat; hard anodizing works for wear but decorative anodizing turns dark/mottled, and copper content demands careful pretreatment before plating.
Can EN AC-45200 be formed, bent or molded?
Casting alloy only: good fluidity for sand and permanent-mould work with moderate shrinkage; degas and grain-refine/Sr-modify the melt, use directional solidification and generous risers for pressure-tight walls.
What is the maximum service temperature of EN AC-45200?
EN AC-45200 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 EN AC-45200 cost?
EN AC-45200 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)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- ISO 3522 — Aluminium and aluminium alloys, castings — ISO (2016)
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.