Longda Super alloy company’s Cobalt alloy bars FSX414, CoCrMo,X40,X45 etc are high purity, consistent quality and homogenized that satisfied to our customers home and abroad. Cobalt alloys features and properties are as follows: • Cobalt alloys have higher melting points than nickel (or iron) alloys. This gives them the ability to absorb stress to a higher absolute temperature. • Cobalt alloys give superior hot corrosion resistance to gas turbine atmospheres, this is due to their high chromium content. • Cobalt alloys show superior thermal fatigue resistance and weldability over nickel alloys. • Composition and Structure • Cobalt alloys are termed austenitic in that the high temperature “Face Centred Cubic” phase is stabilised at room temperature.  They are hardened by carbide precipitation, thus carbon content is critical. Chromium provides hot corrosion resistance and other refractory metals are added to give solid solution strengthening – tungsten and molybdenum – and carbide formation – tantalum, niobium, zirconium, hafnium. Cobalt Based Super alloys Alloy Name UNS No. BS NO. AMS Rolls-Royce GE Snecma Others CoCrMo 5384 HS21 , ASTM F75 FSX414 B50A910 X40 5382 MSRR7049 , 7122 C50TF21 DMD403.32 HS31 , PWA648 X45 B50A3748 DMD405.32 MM302 PWA657 MM509 B50TF89 DMD.401-32 PWA647 Cobalt Based Super alloys Chemical Composition Alloy Name AI B C Nb Co Cr Fe Mn Mo Ni Si Ta Ti W ZR Others CoCrMn 0.23 Bal 28.0 0.50 6.0 0.80 FSX414 0.100 0.25 Bal 29.5 0.7 11.0 0.90 7.0 X40 0.25 Bal 25.5 0.8 10.5 0.80 7.5 X45 0.100 0.25 Bal 25.5 0.5 10.5 0.80 7.5 MM302 0.005 0.85 Bal 21.5 10.0 0.02 MM509 0.60 Bal 23.5 10.0 3.5 0.2 7.0 0.45