51 lines
3.6 KiB
Markdown
51 lines
3.6 KiB
Markdown
 
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[Download](https://presentations-decks-uploads-prod.s3.amazonaws.com/7403838/3888537/015f9cccb16a040bbe73d9165683ae703829853f3adb06aa6caa84933942c279.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20260910T074528Z&X-Amz-SignedHeaders=host&X-Amz-Expires=60&X-Amz-Credential=AKIAZ32RUKUMSNCVYAKB%2F20260910%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=b5380a5416d932e91fed1229d5d9c2b262541eb248cfcdcc0aa8e78640e3a799)
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This data sheet contains approximate values that may vary with build conditions and is intended for reference and comparison purposes only. It should not be used for
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design specifications or quality control. The performance characteristics of the material can be affected (±) by, but not limited to, part design, part geometries,
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application and operating conditions. Each user is responsible for determining that the material is safe, lawful and technica lly suitable for the intended laws and
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regulations. ADDIT IVA makes no warranties of any kind, express or implied, including, but not limited to, the warranties of merchantability, fi tness for a particular use, or
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warranty against patent infringement. ADDITIVA excludes liability, however arising, for any inaccura cies in this document.
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ADDITIVA\_Scalmalloy\_rev005.docx
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Scalmalloy is an aluminium \- magnesium \- scandium alloy that offers excellent stiffness, an exceptionally high strength \-
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to \- weight ratio, superb weldability and ductility, and low density to reduce parasitic mass from non \- structural
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features. It can effectively replace high \- strength 7000 series aluminium alloys in plate or forging form. Thanks to its
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low density, Scalmalloy provides density \- specific properties that are highly competitive, even when compared with
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the strongest alternatives. Compared with other al uminium alloys used in additive manufacturing, Scalmalloy delivers
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a unique level of corrosion resistance and maintains a highly stable microstructure up to 250°C, making it suitable for
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a broad range of high \- performance applications.
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Combining high strength with excellent ductility and processability, it is the ideal material for heavily loaded
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components, which is why it is already employed in many critical applications. Scalmalloy has an established track
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record across a wide range o f fields, including a erospace, robotics, marine, and motorsport, and is an approved
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material under FIA regulations.
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Chemical composition Physical properties
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Al – Aluminium balance Relative density Approx. 99.5 %
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Mg – Magnesium 4.0÷4.9 % Density 2.67 g/cm 3
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Sc \- Scandium 0.6 ÷0.8%
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Mn – Manganese 0.3 ÷0.8%
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Zr – Zirconium 0.2÷0.5 %
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Fe – Iron ≤ 0.4 %
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Si – Silicon ≤ 0.4 %
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Zn – Zinc ≤ 0.25 % Heat Treatment (stress relief)
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Ti – Titanium ≤ 0.15 % 20°C → 325 °C 1 hour
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Cu – Copper ≤ 0.10 % 325 °C 4 hours
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325 °C → 20°C \-
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Technical data
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Typical part accuracy (quote < 150 mm) ± 0.2/0.3 mm
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Typical part accuracy (quote ≥ 150 mm) ± 0.05mm each 25mm
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Surface roughness (as \- built) Ra: 5 ÷ 9 µm
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Surface roughness (after machining / polishing) Ra < 1.6 µm
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Mechanical properties
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Mechanical data Test method As \- Built Heat Treated
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Tensile streng th (Rm)
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ASTM E8 / E8M
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(unmachined specimen, Z \- axis)
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330 ± 5 MPa 5 5 5 ± 10 MPa
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Yield strength (Rp 0.2%) 260 ± 5 MPa 51 5 ± 10 MPa
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Elongation at break 19 ± 2 % 1 4 ± 2 %
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Young’s modulus na 72 ± 3 GPa
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Hardness Hv10 na 160
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Thermal conductivity ASTM E1461 \- 13 na 95 W/m·K
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