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[quote=Anonymous][quote=Anonymous][quote=Anonymous]Regarding dulling my knives, they claim that the titanium is softer than steel, which I'm surprised to hear.

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Steel was invented because most pure metals were too weak for structural and industrial applications. Strength and hardness are related but not the same. Hardness is how well a material resists plastic deformation. Strength is how well a material can withstand a force. Rubber, spider silk, and gold are materials that are strong but not hard.

To further complicate, strength has different aspects. Tensile, compressive, shear, ductile, yield, ultimate. For example, our cortical bones in our long bones are strong in tension - they don’t bend easily, and our spongy bone in our vertebrae are strong in compression.

Titanium is softer than the steel used for knives but it is way harder than wood or plastic. If knives get dull on a wooden board, imagine what will happen on titanium. [/quote]

Given where titanium is on the periodic table, I suspect it has a thin, tough oxide layer. That's going to dull your knives. 
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