titanium sponge powder Titanium and chromium alloys can do

Titanium : one has a very high melting point of silver light metal element, atomic number 22 , is usually hard and brittle at low temperatures , heating malleable , ductile titanium sponge titanium , normal temperature with good corrosion resistance , mainly in the form of ilmenite steel and the manufacture of other alloys used as structural materials for [titanium] - element symbols Ti
Chromium : A blue and white polyvalent metallic element , atomic number 24 , usually prepared chrome , hard and brittle , corrosion state exists only in compounds . Mainly in the form of chromite ore , aluminum thermal method , silicon thermal or electrolytic method to separate it out from the ore , mainly used in alloys ( such as for ferrochrome alloy or nickel-chromium alloy resistance of chromium steels ) and electroplating ( such as automotive shock absorbers and interior decoration aerospace casting  as well as cutting tools ) [chromium] - element symbols Cr. Titanium and alloys of chromium may be , are corrosion-resistant metals.
Titanium- aluminum -chromium alloy
α + β type titanium alloy . The main alloy TC5 and TC6, TC7, TC8 and so on. Aluminum and chromium from solid solution strengthening effect, and can stabilize β phase . Also often added to improve the thermal stability of molybdenum and lasting strength , adding a small amount of iron, silicon or zirconium in order to improve heat resistance . Vacuum consumable arc melting ingot- pressure processing to become useful again . Such alloys due to poor ductility, good thermal stability, not broad titanium alloy industrial applications , where TC5 has largely been eliminated.