Re: from 40' 6' to 50' 6" box cars
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water.kresse@...
Tony,
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I agree on the Lt Wt issue. They experimented with 0.075" thk HSLA steels just prior to the war and then re-upped the ga. again. HSLA (then called high tensile) steel was used in side-sheets but at the older std thicknesses. Al
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From: Anthony Thompson <thompson@...> Frank Greene wrote: Stronger, lighter materials allowed larger cars to be operated. MoreNope to this one. Cars were still being built out of simple, plain-carbon steel. Certainly design had improved, with far smaller center sills once the ARA design became standard for all-steel box cars. Even the slightly higher strength steels used in the 1960s did not really change dimensions of structural parts. And "lighter?" Nope. Anthony Thompson Dept. of Materials Science & Engineering University of California, Berkeley thompsonmarytony@...
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