Hydronalium is a family of aluminium-magnesium alloys. It is an alloy predominantly of aluminium, with between 1%-12% of magnesium as the primary alloying ingredient. It also includes a secondary addition of manganese, usually between 0.4%-1%.
The Hydronalium alloys originated in Germany in the 1930s[1][2] and are best known, at least by that name, in Eastern Europe. They were widely used for shipbuilding in Poland.
There are many alloys within this family, one standard reference listing over twenty.[3]
The alloy family is noted for its resistance to seawater corrosion.[3] As such it is used in sheet form for boatbuilding and light shipbuilding. As castings it is used for marine fittings. The reliable strength of some grades is sufficient for aerospace use and so they are used for wetted components of seaplane aircraft, such as floats[2] and propellers, where marine corrosion resistance is also needed.
Some variants of the alloy are ductile enough to be drawn into wire. This, combined with their resistance to corrosion by salty sweat, has led to an application for violinstrings as an alternative to silver.[4]
hydronalium, family, aluminium, magnesium, alloys, alloy, predominantly, aluminium, with, between, magnesium, primary, alloying, ingredient, also, includes, secondary, addition, manganese, usually, between, polish, project, class, torpedo, boat, with, hull, we. Hydronalium is a family of aluminium magnesium alloys It is an alloy predominantly of aluminium with between 1 12 of magnesium as the primary alloying ingredient It also includes a secondary addition of manganese usually between 0 4 1 Polish project 664 class torpedo boat with a hull of welded Hydronalium The Hydronalium alloys originated in Germany in the 1930s 1 2 and are best known at least by that name in Eastern Europe They were widely used for shipbuilding in Poland There are many alloys within this family one standard reference listing over twenty 3 Mechanical properties Alloy Hardening Tensile strength Yield strength Elongation Hardness Brinell Hydronalium 2 3 Soft 193 MPa 28 000 psi 90 MPa 13 000 psi 30 47Hard 290 MPa 42 000 psi 255 MPa 37 000 psi 8 77Applications EditThe alloy family is noted for its resistance to seawater corrosion 3 As such it is used in sheet form for boatbuilding and light shipbuilding As castings it is used for marine fittings The reliable strength of some grades is sufficient for aerospace use and so they are used for wetted components of seaplane aircraft such as floats 2 and propellers where marine corrosion resistance is also needed Some variants of the alloy are ductile enough to be drawn into wire This combined with their resistance to corrosion by salty sweat has led to an application for violin strings as an alternative to silver 4 See also Edit5083 aluminium alloyReferences Edit Corrosion tests on Igedur and Hydronalium Hy 18 aluminium alloy sheets National Archives Kew 1939 1941 AVIA 6 7948 a b H R King 19 October 1939 Some German Seaplanes Flight supplement b d a b c John P Frick ed 2000 Woldman s Engineering Alloys ASM International pp 567 568 ISBN 9780871706911 Warchal violin strings Musikhaus Thomann e K Retrieved from https en wikipedia org w index php title Hydronalium amp oldid 1131124306, wikipedia, wiki, book, books, library,
