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To: mamelukesabre; Swordmaker
You aren’t showing me anything. iron based alloys have a HUGE range of hardness, tensile strength, and toughness. The fact that your chart shows TITANIUM as same yield strength as steel tells me your chart is no good.

These charts are facts, not speculation. They may not have enough examples to satisfy you but this chart is matching Titanium with Stainless Steel not plain carbon steel which has a much lower yeild strength. Standard bridge and beam steel has a yeild strength of 36ksi. Thus the name A36. "High" carbon steel for the same uses has a yeild strength of 50ksi but this comes at the cost of much more difficult joining requirements and the possibility of needing field heat treatment to ward off embrittlement.

Plain carbon steel is a wonder material but it is much less strong than you seem to believe. Don't wade any deeper in the waters of foolish pride defending steel, it doesn't need it. Most folks wouldn't understand the second chart that swordmaker posted. What is shows is the ability of a material to be cold worked essentially which is very valuable for making shaped metal objects like pots, pans and electronic device covers.

41 posted on 08/12/2010 11:41:20 PM PDT by dalight
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To: dalight

wow, your knowledge of steel is extremely limited. You must be a dinosaur referencing 36ksi beam and column steel. I’m surprised you didn’t mention 32ksi steel!

Here’s a clue for ya, now look up rebar, prestressing strands, spring steel, tool steel, and threaded fasteners.


48 posted on 08/13/2010 5:38:34 AM PDT by mamelukesabre (Si Vis Pacem Para Bellum (If you want peace prepare for war))
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