Rhenium

Impurities (max. ppm)	MMTA superalloy grade	Isfara (electrolytic reduction)	Roshal/MELZ	POBEDIT (hydrogen reduction)	Typical quality of Re-powder produced from "Dzhezkazgan" APR	Re-pellets
Impurities (max. ppm)	MMTA superalloy grade	Isfara (electrolytic reduction)	Roshal/MELZ	POBEDIT (hydrogen reduction)		Typical (by SEKOM)	Max. (Howmet)
Ag	5	2	<0.2			<1	5
Al	30	2 - 5	4	5	2.2 - 5	<1	30
As	10		<0.03		0.21	<2	10
B	20		20		7.7	<1	200
Bi	1				0.13	<2	1
C	30					14	30
Ca	5	7 - 10	5	50	0.64	<1	5
Cd	50		<0.5		13 - 18	<1	50
Cl	50	2	20		0.36
Co	100		0.06		5 - 25	1 - 6	100
Cr	100	5	6		10 - 13	< 1	100
Cu	70	3	<0.1	30	3.4	< 1	70
Fe	100	5 - 30	2	60	10 - 34	10	100
Ga	50		<0.05				200
H	50				142	<10	50
Hf	200		<0.2		< 5		200
In	50		<0.05		0.015		200
K	10	9 - 10	30	10	6.4 - 57	48	50
Mg	100	4	3	5	0.27	<1	100
Mn	20	5	0.5		3.2	<1	20
Mo	500	3 - 5	30	5	1 - 32	<3	500
N	50				37	<10	50
Na	10	3	5		0.92	<3	10
Nb/Cb	200		0.9		0.062	<5	200
Ni	100	1 - 2	50	5	7.6 - 19	<1	100
O₂	300				2425	190 - 379	500
P	200	<1	0.2		0.14	<3	200
Pb	5		10		7.8	<1	2
Pt		30
S	20	500	0.9		4.2	<10	20
Sb	50		<0.07		< 0.03		200
Se	5		<0.1		< 0.1	<2	5
Si	20	30	30		4.7	<5	20
Sn	10		0.3		0.06	<2	10
Ta	200		10		< 20	<10	200
Te	5		<0.1			<5	5
Th	20				< 20	<5	20
Ti	200	40			0.37	3	200
Tl	5		2			<1	5
V	200	2	0.06		0.033		200
W	500		500		3.2 - 22	<8	500
Y			0.2		0.019
Zn	50	3	0.9		49 - 55	<1	200
Zr	200		<0.1		0.021	<1	200
O₂+H₂O				0.20%		86
Re (min.%)	99.9%	99.99%		99.98%	99.99%	99.95%
size distribution				Æ 42 x 10-15 mm
200-500m		50%					100 % < 70m
80-200 m		30%
< 80m		20%
FSSS						4-6m

Rhenium pellets are made from above metal powder by sintering. Typically the pellets are small bricks of 34 x 39 x 10-15 mm size or round tablets of Æ 42 x 10-15 mm size. The O₂+H₂O content is dramatically sinks due to sintering to values of below 0.05%.