Aluminum and Aluminum Alloys

Aluminum and Aluminum Alloys in the Piping Materials is one of the important element and Piping & Fabrication will end about Piping Materials for a while and continue with the other Piping Elements.

Aluminum and many of its alloys are highly resistant to atmospheric corrosion and to attack by many chemical agents, with the exception of strong alkalis. However, they are subject to galvanic attack if coupled with more noble materials.

Additions of alloying elements increases strengh, but to the detriment of thermal and electrical conductivity, and lowers the material’s melting point. Alloying with Cu, Mg, and Si creates heat-treatable alloys that are age-hardenable. Maximum strength can usually be achieved by heating to about 300 to 500°F (150 to 260°C).

Effects of working or precipitation hardening can be removed by annealing at temperatures of 600 to 800°F (315 to 425°C). A system has been devised to designate alloys of aluminum based on the major alloying constituent. See Table A3.10. 

TABLE A3.10 Designation System for Wrought Aluminum and Aluminum Alloy

Appendix A5 provides a list of material specifications which are acceptable for design and construction of piping systems within the jurisdiction of the ASME Boiler and Pressure Vessel Code and the ASME B31, Code for Pressure Piping. Appendix A6 lists some international material specifications for piping.

MAKE THE LIGHT

make the light

there is sometimes when we lost our way, that's probably because we don't know the way or the way is too dark for us, so we need some light to see the way. it's happen, it's happen a lot in my life, when I lost the light to see, to know where is the right way and where is the wrong way. and sometimes we need to make the light by our self and that's inside us.

I know, the last few weeks I rarely to post Old n New Wallpapers because I lost the light inside my heart and I try to make the light, but sometimes I really need someone to help me out!

The Artful of Abstract

the artful of abstract

Maybe that's something good to said, because for me abstract is always something fresh, something new, something pure, that's the pictures which always shown our feeling, our mind situation, our mood. Because that's the power of The Artful of Abstract.

It's been few days Old n New Wallpapers is not posting because I have to finish the job on the factory. I think this post will do for now.

Big Smile

BIG SMILE

Ha ha ha, I just remember that I ever hear someone told me to keep smile, no matter what problem that I have, just keep smile, because with smiling we already fight our problems at least we make our positive energy comes out.

Big Smile and keep smiling in every times you see or meet people, that what Old n New Wallpapers want to say with this cool wallpapers, because life is too short, so keep smile.

SO CONFUSE OF ME

so confuse

It's getting hard everyday, I feel that I can hold on no more. This is what I feel today and I don't know if I can continue this life with the same situation like before and the other days? But I still do have a hope, and still waiting for a miracle even now I'm So Confuse.

It's true and honestly I really confuse today, even I don't know what I have to do. I just want to lying on my bed and don't want to wake up. But Old n New Wallpapers makes me have to move because I know there is a hope out there.