ilmasil® - fused quartz is produced by our in-house developed plasma fusion method. In a rotating furnace mold high purity quartz crystaline material is melted to fused quartz glass cylinders (billets) using a high power plasma arc.
This enviroment friendly fusion method promotes a high degree of flexibility in geometry as well as material properties.

ilmasil® - Materials
 

application	semiconductor
	ilmasil PN	ilmasil PI	ilmasil PL	ilmasil PO-1	ilmasil PO-2
raw material	IOTA- standard	IOTA- 4	IOTA- 6	IOTA- standard	IOTA- 6
	clear fused quartz	clear fused quartz	clear fused quartz	opaque fused quartz	opaque fused quartz
trace elements in ppm
Al	16	8	8	16	8
Ca	0,8	0,7	0,7	0,8	0,7
Fe	0,8	0,6	0,3	0,8	0,3
K	0,9	0,5	0,2	0,9	0,2
Li	0,7	0,3	0,2	0,7	0,2
Na	0,9	0,7	0,2	0,9	0,2
Ti	1,5	1,5	1,5	1,5	1,5
OH-content*	15-45 ppm stable	15-45 ppm stable	15-45 ppm stable	15-45 ppm stable	15-45 ppm stable

application	lamps
	ilmasil PN	ilmasil PS	ilmasil PA	ilmasil TQ
raw material	IOTA- standard	synthetic crystal	rock crystal	quartz sand
	clear fused quartz	clear fused quartz	clear fused quartz	fused quartz (milky)
trace elements in ppm
Al	16	8	20
Ca	0,8	0,3	1,0
Fe	0,8	0,5	0,4
K	0,9	0,2	0,7
Li	0,7	1	1,6
Na	0,9	1	1,0
Ti	1,5	0,1	1,6
OH-content*	15-45 ppm stable	5-15 ppm stable	5-15 ppm stable

	Doped Fused Quartz
	ilmasil PN 215 PN 235 PN 240 PN 250	ilmasil PN 280	ilmasil PN 310 PN 320	ilmasil PN 350 _______ PN 354	ilmasil PN 585 PN 630 _______ PN 800
	doped quartz materials with typical transmission for special lamps				red (ruby) and grey quartz as filter sleeve for short wave infrared heaters
Dopant	Ti	Sn+Ti	V	Ce+Ti _______ Ce+V	Cu _______ Ni+Co
OH-content*	15-45 ppm stable	25-55 ppm stable	25-55 ppm stable	25-55 ppm stable

*values are only valid for non-flameworked material