Zinc Aluminum Alloys: Difference between revisions

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=Intro=
=Basics=
*Zinc Aluminum Alloys are alloys that melt at low temperature (431C) [https://www.dynacast.com/za-27---zinc-aluminum] and have 60ksi tensile strength. They display the low melting point slightly smaller than that of zinc, with strength significantly greater than that of aluminum (45 ksi). [https://www.google.com/search?client=ubuntu&hs=K2a&ei=tC2eXMDoMMOWtQXr84LoCg&q=tensile+strength+of+aluminum&oq=tensile+strength+of+aluminum&gs_l=psy-ab.3..0l10.32433.37210..37366...0.0..0.120.2675.20j8......0....1..gws-wiz.......0i71j0i67j0i131i67j0i131.CMPldCbJo1o].
*Sometimes Referred to by the Brand Name "Zamak"
*Majority of composition is Zinc - commonly - 8, 12, 27% Aluminum (Hence ZA-12)
*ZA alloys not only show the best melt/strength properties of each component metal. They show IMPROVED melt point (430 compared to 660C for Aluminum) - strength (30% stronger)properties compared to their components.
*As such, ZA are magical ingredients for the [[Desktop Foundry]].


Alloys that met at low temperature (431C) [https://www.dynacast.com/za-27---zinc-aluminum] and have 60ksi tensile strength. They display the low melting point slightly smaller than that of zinc, with strength significantly greater than that of aluminum (45 ksi). [https://www.google.com/search?client=ubuntu&hs=K2a&ei=tC2eXMDoMMOWtQXr84LoCg&q=tensile+strength+of+aluminum&oq=tensile+strength+of+aluminum&gs_l=psy-ab.3..0l10.32433.37210..37366...0.0..0.120.2675.20j8......0....1..gws-wiz.......0i71j0i67j0i131i67j0i131.CMPldCbJo1o].
=Machinability=
*ZA 12 is machinable and 120 [[Brinell Hardness]], same as mild steel
*Melting temperatures, hardness, and other properties - [https://www.eazall.com/Gravity-Casting-Alloys]


ZA alloys not only show the best melt/strength properties of each component metal. They show IMPROVED melt point (430 compared to 660C for Aluminum) - strength (30% stronger)properties compared to their components.
=Sourcing=
*$5/lb [https://www.google.com/search?q=za+alloy&sxsrf=ALeKk02-WIgzrGcAnfyKcU5UxQUmNESx0w:1613446937028&source=lnms&tbm=shop&sa=X&ved=2ahUKEwiAkq6cvu3uAhXLKs0KHTucB5UQ_AUoAnoECBgQBA&biw=2133&bih=1013#spd=9465205602568804628]
*[[RotoMetals]] $21.99 Per 4 lb Ingot, ~5.5 USD per Pound
*[https://www.rotometals.com/zamak-za-12-ingot-aluminum-10-5-11-5-copper-0-5-1-2-zinc-balance/ Link to the 4 Pound ZA-12 Ingot RotoMetals Source]


As such, ZA are magical ingredients for the [[Desktop Foundry]].
=Safety=
*Re:
**[[Metal Casting Safety]]
**[[Metal Fume Fever]] / [[Zinc Fume Safety]] (Same issues as [[Welding Galvanized Metal]] )


=Machinability=
=3D Printing and Housing Applications=
*ZA 12 is machinable and 120 [[Brinell Hardness]], same as mild steel
*Zinc and ZA alloys melt readily at around 420C, as low as 375C - and can possibly be 3D printed through a melting nozzle.
*Zinc is also the materials of galvanizing - a critical ingredient of lifetime design with metals.
 
=For Hot Dip Galvanizing=
*ZA alloy with a very small concentration of aluminum is used in galvanizing to reduce the thickness of the intermetallic alloy layer [https://www.galvinfo.com/wp-content/uploads/sites/8/2017/05/GalvInfoNote_2_4.pdf]


=Links=
=Internal Links=
*Wikipedia - [https://en.wikipedia.org/wiki/Zinc_aluminium]]
*[[ZA Alloy Bushings]]
*[[ZA Alloy Bushings]]
*Melting temperatures, hardness, and other properties - [https://www.eazall.com/Gravity-Casting-Alloys]
*[[Aluminum Alloys]]
*[[Alloys]]
 
=External Links=
*[https://en.wikipedia.org/wiki/Zinc_aluminium The Wikipedia Page on Zinc Aluminum Alloys]
*[https://en.wikipedia.org/wiki/Zamak The Wikipedia Page on Zamak]
**[https://en.wikipedia.org/wiki/Talk:Zamak#ASTM_8240_Standards_Not_Current It is supposedly not current in standards/terminology used however]
*[https://youtu.be/8IBWICVNfz4 A Video by the YouTube Channel "Paul's Garage" Titled "The BEST Metal Casting Alloy That Everyone Ignores" ] ( '''~9 Minute Watch''' )
*[http://www.gizmology.net/stovetop.htm Gizmology - Stovetop production of ZA alloy] (Dead Link)
 
[[Category: Alloys]] [[Category: Aluminum]] [[Category: Metalwork]] [[Category: Metal Casting]] [[Category: Dead Links]]

Latest revision as of 05:52, 6 June 2023

Basics

  • Zinc Aluminum Alloys are alloys that melt at low temperature (431C) [1] and have 60ksi tensile strength. They display the low melting point slightly smaller than that of zinc, with strength significantly greater than that of aluminum (45 ksi). [2].
  • Sometimes Referred to by the Brand Name "Zamak"
  • Majority of composition is Zinc - commonly - 8, 12, 27% Aluminum (Hence ZA-12)
  • ZA alloys not only show the best melt/strength properties of each component metal. They show IMPROVED melt point (430 compared to 660C for Aluminum) - strength (30% stronger)properties compared to their components.
  • As such, ZA are magical ingredients for the Desktop Foundry.

Machinability

  • ZA 12 is machinable and 120 Brinell Hardness, same as mild steel
  • Melting temperatures, hardness, and other properties - [3]

Sourcing

Safety

3D Printing and Housing Applications

  • Zinc and ZA alloys melt readily at around 420C, as low as 375C - and can possibly be 3D printed through a melting nozzle.
  • Zinc is also the materials of galvanizing - a critical ingredient of lifetime design with metals.

For Hot Dip Galvanizing

  • ZA alloy with a very small concentration of aluminum is used in galvanizing to reduce the thickness of the intermetallic alloy layer [5]

Internal Links

External Links

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