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  2. ASTM A500 - Wikipedia

    en.wikipedia.org/wiki/ASTM_A500

    ASTM A500 is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is commonly specified in the US for hollow structural sections, but the more stringent CSA G40.21 is preferred in Canada.

  3. Hollow structural section - Wikipedia

    en.wikipedia.org/wiki/Hollow_structural_section

    A hot-rolled HSS-box section cut open with a bandsaw, demonstrating residual stress. A hollow structural section (HSS) is a type of metal profile with a hollow cross section.

  4. Mechanical properties of carbon nanotubes - Wikipedia

    en.wikipedia.org/wiki/Mechanical_properties_of...

    In 2000, a multi-walled carbon nanotube was tested to have a tensile strength of 63 gigapascals (9,100,000 psi). (For illustration, this translates into the ability to endure tension of a weight equivalent to 6,422 kilograms-force (62,980 N; 14,160 lbf) on a cable with cross-section of 1 square millimetre (0.0016 sq in).

  5. Carbon nanotube - Wikipedia

    en.wikipedia.org/wiki/Carbon_nanotube

    For illustration, this translates into the ability to endure tension of a weight equivalent to 6,422 kilograms-force (62,980 N; 14,160 lbf) on a cable with cross-section of 1 mm 2 (0.0016 sq in)). Further studies, such as one conducted in 2008, revealed that individual CNT shells have strengths of up to ≈100 GPa (15,000,000 psi), which is in ...

  6. Internally grooved copper tube - Wikipedia

    en.wikipedia.org/wiki/Internally_grooved_copper_tube

    Tube weight was reduced by 31% when copper tube diameters were downsized from 3/8 inch to 7 mm. Tube weight was reduced by 46% when copper tube diameters were downsized from 3/8 inch to 5 mm. The weights of the fin materials in the coils was 3.55 kg for the 9.52 mm coils, 2.61 kg for the 7 mm coils, and 1.55 kg for the 5 mm coils.

  7. Trainers Say to Walk This Many Miles a Day for Best Results - AOL

    www.aol.com/lifestyle/trainers-walk-many-miles...

    Number of miles to walk a day for weight loss. The general standard is to have a step goal of 10,000 steps a day, says Albert Matheny, RD, CSCS, co-founder of SoHo Strength Lab. This translates to ...