3A21 aluminum round bar

3A21 aluminum round bar is an Al Mn alloy. 3A21 aluminum round bar is one of the most widely used antirust aluminum. It has low strength (only slightly higher than industrial pure aluminum) and can not be strengthened by heat treatment. Therefore, cold working is often used to improve its mechanical properties. It has high plasticity in annealing state, good plasticity in semi cold hardening, low plasticity in cold hardening, good corrosion resistance, good weldability and poor machinability.

Typical application of 3A21 aluminum rod
3A21 aluminum round bar is mainly used for high plasticity and good weldability, such as aerospace, military equipment, fixture, automobile, transportation, propellant tank manufacturing, welding structure, welding parts of cabin body, such as skin, end frame, bracket, and conduit working in corrosive medium.

Chemical composition: Chemical composition:

Temper	Si	Fe	Cu	Mn	Cr	Zn	Ti	Zr	Mg		Other		Al
3a21	0.6	0.7	0.2	1.0-1.6	--	0.1	0.15	--	0.05	Every		Total
										0.05		0.15	Remanente

Author: Frank

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