SA-213/SA-213M TP310HCbN (UNS S31042) has excellent creep properties. The superior creep strength of this alloy is achieved by precipitation of fine niobium based Z-phase. It is well established that niobium and tantalum have similar physical and chemical properties. We evaluated mechanical properties of tantalum added TP310HCbN, to investigate whether tantalum could be substitute for niobium. It is concluded that niobium can be replaced by tantalum in TP310HCbN.

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