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Castaduct-42

Castaduct-42 / AlMg4Fe2 (RHEINFELDEN ALLOYS) | High-pressure die casting

Manufacturer-reported values. Do not use as certified design allowables. View sources ↗

TemperWallYield MPaTensile MPaElong. %
F · Vacuum-supported HPDC plates and structural-cast test pieces2–4 mm120–150240–28010–22
F · Flat tensile specimen from 3.0 mm HPDC plate3 mm12626015.2

F condition: Manufacturer as-cast F range for HPDC casts of typical wall thickness 2–4 mm. The narrative mentions 2.0 mm vacuum-supported plates and specimens from real structures at 2–4 mm; casting location, flow and oxide content affect results. Brinell hardness 65–75 HBW is a separate observation. This range is not a specimen mean or paired tensile–elongation coordinates.

F condition: A single source-reported stress–strain figure example for an as-cast 3.0 mm flat tensile specimen; not the mean of the 2–4 mm range and not a guaranteed value. Test temperature and specimen count are not stated.

Chemical composition

Only reviewed weight-percent bounds are listed. A blank bound means only the other threshold was reported.

The 2017 original-developer handbook p. 29 table is for the ingot, in percent by mass. Be is named under “others” without a numeric limit and is not filled in. A narrative p. 30 Fe-in-casting recommendation (1.3–1.7%) is distinct from the ingot specification (1.5–1.7%).

Element / source labelMinimum wt%Upper wt%
Si—0.2
Fe1.51.7
Cu—0.2
Mn—0.15
Mg4.04.6
Zn—0.3
Ti—0.2

Physical and thermal properties

PropertyReported valueUnitCondition
density2.69kg/dm³manufacturer physical-data table; temperature and temper not separately reported
thermal expansion2510⁻⁶/Kmanufacturer physical-data table; temperature interval not stated in table; a separate dilatometer result is listed below
thermal conductivity1.4W/(K·cm)manufacturer physical-data table; temperature and temper not separately reported
electrical conductivity26.0–29.5%IACSmanufacturer physical-data table; temperature and temper not separately reported
linear shrinkage0.5–0.9%manufacturer physical-data table for HPDC casts; measurement condition not separately reported

Processing properties

Source-reported comparisons, not certified limits.

PropertyReported value
castabilityEasy castability in HPDC process
weldabilityWell weldable
anodizingVery well suitable for anodizing

Additional property data

Source-reported values, specification intervals, minimums and strict bounds; an average is labeled only when the source reports it. Compare conditions before use.

PropertyValueCondition
brinell hardness65–75 HBWas-cast F; HPDC structural casts with typical wall thickness 2–4 mm; Tab. 2 reported range
thermal conductivity140 W/(m·K)source-reported average across heated/cooled 20–500 °C measurements on as-cast F 2.0 mm die-cast plates; 50 °C steps, 10 °C/min, 60 min hold
thermal expansion24.7 10⁻⁶/Ksource-reported coefficient from two die-cast plates tested over 20–200 °C by dilatometer; separate from rounded physical-data table value 25

Data under review

Liquidus Temperature withheld: The original-developer 2017 handbook reports 629 °C on PDF p. 30 and 635 °C on PDF p. 34 for the liquidus. Neither is published as a material property until the issuer clarifies the different conditions or edition error.

Aluminium HPDC Alloys for Structural Casts handbook, 2017 — Castaduct-42 ↗ — PDF p. 30, Influence of Iron, liquidus statement

Aluminium HPDC Alloys for Structural Casts handbook, 2017 — Castaduct-42 ↗ — PDF p. 34, Shrinkage behavior, liquidus statement

Evidence

Aluminium HPDC Alloys for Structural Casts handbook, 2017 — Castaduct-42 — RHEINFELDEN ALLOYS GmbH & Co. KG

Show the exact source location for each value

Official issuer page