Salesman tries to sell $7,000 cookware set

Tian wrote a funny account of a salesman who came over to Tian's friends' house to try to sell them some outrageously overpriced cookware. The salesman try to dazzle the couple with the high tech features of the pots and pans, but his marks weren't taken in by the spiel.

According to Jay [the salesman], Classica cookware is made by Regal Ware in Wisconsin, USA. The reason they are the superior cookware is because they are made from T-304 surgical grade stainless steel.

That is a lie.

T-304 is the most common type of stainless steel. For surgical use, only T-316 grade of stainless steel can be used.

To uniformly transfer the heat, the cookware is made from 5-layers of metals sandwiched together. Outer layers are T304 stainless steel, then 1145 aluminum, and the center layer is 3004 aluminum-alloy.

That was lie number 2.

Since thermal conductivies of T304 stainless steel (16.2 W/m-K), 1145 aluminum (230 W/m-K), and 3004 aluminum-alloy (163 W/m-K) are different, sandwich them together would not improve thermal conductivity, rather it will create thermal gradients.

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