Aluminum Bronze, isn't that known as Duraluminum?

Is the CR2 Ion's Aluminum Bronze the same alloy we know as Duraluminum? Thanks

From wikipedia:

Duralumin (also called duraluminum, duraluminium or dural) is the name of one of the earliest types of age-hardenable aluminium alloys. The main alloying constituents are copper, manganese and magnesium. A commonly used modern equivalent of this alloy type is AA2024, which contains (in wt.%) 4.4% copper, 1.5% magnesium and 0.6% manganese. Typical yield strength is 450 MPa, with variations depending on the composition and temper[1].

Duralumin was developed by the German metallurgist Alfred Wilm at Dürener Metallwerke Aktien Gesellschaft. In 1903, Wilm discovered that after quenching, an aluminium alloy containing 4% Cu would slowly harden when left at room temperature for several days. Further improvements led to the introduction of Duralumin in 1909[2]. The name is today obsolete, and mainly used in popular science to describe the Al-Cu alloy system, or 2000 series as designated by the Aluminum Association.


Bronze has copper and tin, while dural has no tin, so technically it shouldn't be the same. Practically, it's a nice term and could be used for any number of aluminum alloys.

Close, but not the same, Duralumin is an alloy of aluminum (over 90%) with copper (about 4%), magnesium (0.5%–1%), and manganese (less than l%)

Aluminum Bronze varies quite a bit but usually only consist of 5-11% of Al, the bulk being Cu (copper) with some types having, nickel, iron, manganese, silicon in small percentages.

Okay, for all you metallurgists out there - what I want to know is what is the compsition of transparent aluminum

EDIT

Sorry for the hijack, but inquiring minds want to know

Well done nerd and Morelight! :bow: My defective recollection from a college metallurgy class 30 years ago was Dural was a British-invented, age-hardenable alloy similar to the 6000 series today. Another probably defective recollection is that aluminum, prior to the Behr/Hall process was a precious metal up until about WWI.

Larry

You're exactly right about how aluminum was valued: Louis Napoleon (Napoleon III), Empereur de France, was very proud of having flatware made of aluminum, more costly than gold.

JimH said:

Okay, for all you metallurgists out there - what I want to know is what is the compsition of transparent aluminum

EDIT

Sorry for the hijack, but inquiring minds want to know

Click to expand...

Its not really aluminum, its aluminum oxide AL2O3 (IIRC)