Titanium screws, and general stainless steel, iron, titanium standard parts copper screws are the same, but the material is titanium material, usually titanium material is titanium TA2 and TC4 titanium alloy materials. Titanium screws raw materials are more expensive, titanium standards but also very beautiful to make more, it seems crafts, titanium acid corrosion, so titanium screws are generally quite high prices.