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Aluminum T6 Limitations?

Aluminum T6 Limitations?

Aluminum T6 Limitations?

(OP)
I'm planning to use aluminum (Grade 6061 T6 / 6082 T6) for low temperature equipment skids (-20 to -40 degC).

Are there any recommendation / limitation for these materials at such low temperatures (resilience...) ?

Thanks and regards,

RE: Aluminum T6 Limitations?

Alloy 6061-T6 has an increase in yield strength, tensile strength, elongation, and fracture toughness when decreasing the temperature, even to cryogenic  temperatures like - 200 °C.  

When you use the word resilience, do you mean the technical definition of "the amount of energy stored under elastic loading"?  If so, then you can examine the governing equation:

resilience = σ2/2E,

where

σ is the elastic stress limit
E is the elastic modulus (Young's)

At - 40 °C, the yield strength increases approximately 10 MPa and the modulus increases about 2 GPa, so the resilience will increase slightly.

Regards,

Cory

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RE: Aluminum T6 Limitations?

T6 is susceptable to stress corrosion cracking.

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