Aluminum EN AC-42200
EN AC-42200
EN AC-42200 (AlSi7Mg0.6) is a hypoeutectic Al-Si casting alloy with raised magnesium for stronger Mg2Si precipitation hardening than AlSi7Mg0.3; it corresponds to A357.0 and AC4CH.
Reference datasheet — EN AC-42200 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-42200 tempers and conditions
EN AC-42200 is supplied in 5 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | As-cast condition, used only for non-structural parts or as the pre-heat-treat delivery state. | 90 | 180 | 5 | 55 HB | 41 % IACS |
Cooled from hot working and artificially aged | Low-distortion, low-cost partial strengthening without solution treatment; used mainly on thin permanent-mould/low-pressure castings. | 150 | 210 | 4 | 70 HB | 41 % IACS |
Solution heat treated and under-aged for high ductility | Choose when elongation, impact tolerance and damage tolerance matter more than peak yield strength (e.g. crash/suspension castings). | 225 | 300 | 8 | 90 HB | 42 % IACS |
T6Default Solution heat treated and artificially aged | Default condition: maximum strength and hardness for load-bearing structural castings where moderate ductility is acceptable. | 250 | 320 | 4 | 105 HB | 39 % IACS |
T6 variant, underaged | Aerospace premium-casting practice (A357-T61): near-peak strength with better guaranteed elongation than plain T6. | 285 | 345 | 5 | 105 HB | 39 % IACS |
What is EN AC-42200?
EN AC-42200 (AlSi7Mg0.6) is a hypoeutectic Al-Si casting alloy with raised magnesium for stronger Mg2Si precipitation hardening than AlSi7Mg0.3; it corresponds to A357.0 and AC4CH. In T6 it gives about 320 MPa tensile, 250 MPa yield, 4 % elongation and 105 HB, with 72 GPa modulus and 151 W/m·K, and is produced by sand, permanent-mould, low-pressure and investment casting for load-carrying parts. Full ductility depends on low Fe, Sr/Na modification and directional solidification; service is limited to about 150 °C and silicon particles rule out bright decorative anodizing. EN AC-42100 (AlSi7Mg0.3) is the lower-strength, more forgiving alternative. EN AC-42200 has a density of 2.67 g/cm³ (0.0965 lb/in³), lighter than 78% of aluminum grades. It melts at 557°C (1,035 °F). EN AC-42200 has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 320 MPa (46.4 ksi) — stronger than 65% of aluminum grades. Elongation at break is 4% and the elastic modulus is 72 GPa (10.4 Msi).
What is EN AC-42200 used for?
- aerospace structural parts
- high-strength automotive castings
- wheels
Advantages
- Low embodied carbon — 9.5 kg CO₂/kg, better than 97% of aluminum grades
EN AC-42200 properties
Typical room-temperature values for EN AC-42200-T6; bars are the position among aluminum grades.
Physical3
EN AC-42200 has a density of 2.67 g/cm³ (0.0965 lb/in³), lighter than 78% of aluminum grades. It melts at 557°C (1,035 °F).
Mechanical14
EN AC-42200 has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 320 MPa (46.4 ksi) — stronger than 65% of aluminum grades. Elongation at break is 4% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
EN AC-42200 is rated for continuous service to 150°C (302 °F). It conducts heat at 151 W/m·K (87.2 BTU/hr·ft·°F), better than 63% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
EN AC-42200 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-42200 takes about 155 MJ of energy and emits 9.5 kg of CO₂ — less than 94% of aluminum grades. Typical recycled content is 35%.
Manufacturability8
EN AC-42200's machinability is good (55/100, worse than 59% of aluminum grades); weldability very good (70/100); 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-42200 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with EN AC-42200
Is EN AC-42200 easy to machine?
Machines well with sharp PCD or polished carbide tooling and high speeds; free-machining is limited by abrasive eutectic Si and by gumminess in the F/T5 states, so prefer T6/T64 for good finish.
Can EN AC-42200 be welded?
Readily TIG/MIG welded with 4043/4047 (or 5356 where colour match after anodize matters); re-solution + age locally or fully to restore T6 strength across the weld.
Can EN AC-42200 be formed, bent or molded?
Excellent fluidity for sand, permanent-mould, low-pressure and investment casting; needs Sr/Na modification, good directional solidification and low Fe to reach full elongation.
EN AC-42200 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 | 6.5 – 7.5 | 7 |
| Mghigher-Mg version vs EN AC-42100 (AlSi7Mg0.3) | 0.45 – 0.7 | 0.6 |
| Tigrain refinement | 0.08 – 0.25 | 0.15 |
| Fe0.15 max typical for investment/premium castings | ≤ 0.19 | |
| Cu | ≤ 0.05 | |
| Mn | ≤ 0.1 | |
| Zn | ≤ 0.07 | |
| Others (each)total 0.10 max | ≤ 0.03 | |
| Al | balance |
What surface finishes work on EN AC-42200?
Hard/chromic anodize for wear and corrosion protection (grey tone from Si), chemical conversion coat plus primer for paint; polishing and bright decorative anodize are limited by silicon particles.
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-42200 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- AC-42200AlSi7Mg0.6
- Similar grades
- A357.0AC4CH
How much does EN AC-42200 cost?
EN AC-42200 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-42200 — frequently asked
What is EN AC-42200 used for?
EN AC-42200 is typically used for aerospace structural parts, high-strength automotive castings and wheels. In short: highest-strength AlSi7Mg grade; A357.0 aerospace equivalent; T6 structural castings.
What is the yield strength of EN AC-42200?
EN AC-42200 has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 320 MPa (46.4 ksi) — stronger than 65% of aluminum grades. Strength varies by condition: see the 5 listed tempers.
Is EN AC-42200 easy to machine?
Reasonably — machinability is rated good (55/100, worse than 59% of aluminum grades). Machines well with sharp PCD or polished carbide tooling and high speeds; free-machining is limited by abrasive eutectic Si and by gumminess in the F/T5 states, so prefer T6/T64 for good finish.
Can EN AC-42200 be welded?
Yes — weldability is rated very good (70/100). Readily TIG/MIG welded with 4043/4047 (or 5356 where colour match after anodize matters); re-solution + age locally or fully to restore T6 strength across the weld.
What surface finishes work on EN AC-42200?
Hard/chromic anodize for wear and corrosion protection (grey tone from Si), chemical conversion coat plus primer for paint; polishing and bright decorative anodize are limited by silicon particles.
Can EN AC-42200 be formed, bent or molded?
Excellent fluidity for sand, permanent-mould, low-pressure and investment casting; needs Sr/Na modification, good directional solidification and low Fe to reach full elongation.
What is the maximum service temperature of EN AC-42200?
EN AC-42200 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-42200-T6 and EN AC-42200-F?
T6 is the default condition — default condition: maximum strength and hardness for load-bearing structural castings where moderate ductility is acceptable. F: as-cast condition, used only for non-structural parts or as the pre-heat-treat delivery state. Yield strength is 250 MPa in T6 versus 90 MPa in F.
How much does EN AC-42200 cost?
EN AC-42200 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 (A357.0 data) — ASM International (1990)
- ASM Specialty Handbook: Aluminum and Aluminum Alloys — ASM International (1993)
- AMS 4241 / AMS 4289 — A357.0 premium quality aluminium alloy castings — SAE International (2018)
- JIS H5202 — Aluminium alloy castings (AC4CH) — JSA (2010)
- Aluminum Association Teal Sheets — designations and chemical composition limits for aluminum alloys in the form of castings and ingot — The Aluminum Association (2018)
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.