Tantalum wire   Material:      RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W) Available size: D0.25 ~ D120mm Standard:      As per ASTM B 365-98 Purity :        >=99.95% or 99.99%   Table.1.Chemical composition:  

Chemistry                                                               ppm
Designation	Chief component		Impurities  maxmium
	Ta	Nb	Fe	Si	Ni	W	Mo	Ti		O	C	H	N
Ta1	Remainder	300	40	30	20	40	40	20		150	40	15	20
Ta2	Remainder	800	100	100	50	200	200	50		200	100	15	100
TaNb3	Remainder	＜35000	100	100	50	200	200	50		200	100	15	100
TaNb20	Remainder	170000- 230000	100	100	50	200	200	50		200	100	15	100
Ta2.5W	Remainder	400	50	30	20	30000	60	20		150	50	15	60
Ta10W	Remainder	400	50	30	20	110000	60	20		150	50	15	60

Special requirements to be agreed on by the supplier and buyer of negotiation