• 1.Standard: ASTM B365 
  2.Grade: Ta1,Ta2.5W,Ta10W 
  3.Purity: 99.95% 
  
  

•  

  Grade(UNS)	Annealed
  	Tensile strength min, psi (MPa)	Yield strength min,psi (MPa)(2%)	Elongation min, % (1 inch gage length)
  Pure Ta (RO5200, RO5400)	30000 (207)	20000 (138)	20
  Ta-10W  (RO5255)	70000 (482)	60000 (414)	15
  Ta-2.5W (RO5252)	40000 (276)	30000 (207)	20
  Ta-40Nb (RO5240)	35000 (241)	20000 (138)	25

   

   

  Chemical composition

  Chemistry (%)
  Designation	Chief component		Impurities   maxmium
  	Ta	Nb	Fe	Si	Ni	W	Mo	Ti	Nb	O	C	H	N
  Ta1	Remainder		0.004	0.003	0.002	0.004	0.006	0.002	0.03	0.015	0.004	0.0015	0.002
  Ta2	Remainder		0.01	0.01	0.005	0.02	0.02	0.005	0.08	0.02	0.01	0.0015	0.01

   

  
  

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