chemical composition:
Cu:0.15～0.4 Mn:0.15
Mg:0.8～1.2
Zn:0.25
Cr:0.04～0.35
Ti:0.15
Si:0.4～0.8
Fe:0.7
Al: margin
Mechanical properties:
The ultimate tensile strength of 6061 is 124 MPa
Tensile yield strength 55.2 MPa
Elongation 25.0%
Elastic coefficient 68.9 GPa
Bending ultimate strength 228 MPa
Bearing Yield Strength 103 MPa
Poisson's ratio 0.330
Fatigue strength 62.1 MPa
Characteristics and scope of application:
It is an Al-Mg-Si alloy with medium strength, good plasticity and excellent corrosion resistance.
In particular, it has no tendency to stress corrosion cracking, has excellent weldability, corrosion resistance and cold workability. It is a promising alloy with a wide range of applications. It can be anodized and colored, or painted with enamel, and is suitable for use as building decoration materials. It contains a small amount of Cu, so its strength is higher than that of 6063, but its quenching sensitivity is also higher than that of 6063. It cannot be air quenched after extrusion, and requires re-solution treatment and quenching aging to obtain higher strength.