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Magnalium (10078 views - Material Database)

Magnalium is an aluminium alloy with magnesium and small amounts of nickel and tin. Some alloys, intended for particular uses at the cost of poor corrosion resistance, may consist of up to 50% magnesium. It finds use in engineering and pyrotechnics.
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Magnalium

Magnalium

Magnalium is an aluminium alloy with magnesium and small amounts of nickel and tin.[1] Some alloys, intended for particular uses at the cost of poor corrosion resistance, may consist of up to 50% magnesium. It finds use in engineering and pyrotechnics.

Properties

Alloys with smaller amounts of magnesium (about 5%) exhibit greater strength, greater corrosion resistance, and lower density than pure aluminium. Such alloys are also more workable and easier to weld than pure aluminium.[2] Alloys with high amounts of magnesium (around 50%) are brittle and more susceptible to corrosion than aluminium.

Uses

Although they are generally more expensive than aluminium, the high strength, low density, and greater workability of alloys with low amounts of magnesium leads to their use in aircraft and automobile parts. Alloys with about 50% magnesium are brittle and corrode easily, which makes them unsuitable for most engineering uses. However, these alloys are flammable when powdered, are more resistant to corrosion than pure magnesium, and are more reactive than pure aluminium and are therefore used in pyrotechnics as a metal fuel and to produce sparks. Magnalium powder also burns with a crackling sound if burnt by itself, and provides a good compromise between the reactivity of magnesium, and the stability of aluminium. Another benefit for pyrotechnics is the brittleness of the alloy, as mentioned before. It is easily broken with a hammer and then ground in a coffee grinder to usable powder. It will grind in a ball mill into a fine powder in a matter of hours, as opposed to a matter of days with aluminium powder.

It is much more powerful than aluminium powder (when compared at similar mesh size) and similar precautions should be taken as per magnesium. These include dangers of moisture and incompatibility with other compounds (boric acid and ammonium compounds).It is also used for making balance beam and light instruments

See also


AlnicoAlluminioAl-LiRame arsenicaleBerillioBirmabrightBismutoCromoCobaltoRameDuralluminioGallio (elemento chimico)VetroOroHiduminiumHydronaliumIndioFerroItalmaPiomboMagnesioMercuryNichelMaterie plastichePlexiglasPlutonioPotassioRodioSamarioScandioArgentoSodioAcciaio inossidabileAcciaioAcciaio strutturaleStagno (elemento chimico)TitanioUranioZincoZirconioLeghe di alluminioY alloyWood's metalRose's metalChromium hydrideNichromeMegalliumStelliteVitalliumBeryllium copperBiglioneOttone (lega)Calamine brassChinese silverDutch metalGilding metalMuntz metalPrincisbeccoTombacBronzoCupralluminiBronzo arsenicaleBell metalFlorentine bronzeGlucydurGuanín (bronze)GunmetalPhosphor bronzeOrmoluSpeculum metalCostantanaCopper hydrideCopper–tungstenCorinthian bronzeCunifeCupronichelCymbal alloysLega di DevardaElettroHepatizonManganinaMelchior (alloy)AlpaccaMolybdochalkosOro nordicoShakudōTumbagaAlGaGalfenolGalinstanoColored goldRhoditeCrown goldElinvarField's metalFernicoFerrolegaFerroceriumFerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitanioFerrouraniumInvarGhisaIron–hydrogen alloyPig ironKanthal (alloy)KovarStaballoyBulat steelCrucible steel41xx steelAcciaio DamascoMangalloyAcciaio super rapidoMushet steelAcciaio MaragingHigh-strength low-alloy steelReynolds 531Electrical steelAcciaio armonicoAL-6XNCelestriumAlloy 20AISI 316Martensitic stainless steelSanicro 28Acciaio chirurgicoZeron 100Silver steelTool steelAcciaio CortenWootz steelSolderTerneLega tipograficaElektronAmalgamaMagnoxAlumelBrightrayChromelHaynes InternationalInconelMonelNicrosilNisilNitinolMu-metalPermalloySupermalloyNickel hydridePlutonium–gallium alloyNaKMischmetalLitioTerfenol-DPseudo palladiumScandium hydrideSamarium–cobalt magnetArgentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichiArgento sterlingArgento tibetanoTitanium Beta CTitanium alloyIdruro di titanioGum metalTitanium goldNitruro di titanioBabbitt (alloy)Britannia metalPeltroQueen's metalMetallo biancoIdruro di uranioZamakZirconium hydrideIdrogenoElioBoroAzotoOssigenoFluoroMetanoMezzanino (architettura)Atomo

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