FILTERGLASSES JGW

Properties		HNG1	HNG3	HNG5	HNG10	HNG11	HGG4
Equivalent to Schott		NG1	NG3	NG5	NG10	NG11	GG4
Denisity (g/cm³)	ρ	2.47	2.45	2.41	2.46	2.42	2.75
Transition temperature	Tg (°C)	480		483	472	487	593
Sag point	Te (°C)	514		523	511	526	625
Thermal expansion coefficient	α20/100×10⁷ m/(m×K)	66		68	68	66	98
Thermal expansion coefficient	α20/300×10⁷ m/(m×K)	69		72	73	71	101
Relative abrasive	Hs, rel	0.99	0.98	1.10	1.04	1.08	0.79
Reflection factor	Rm (d)	0.981	0.921	0.922	0.919	0.923	0.915
Climate resistance	Vk	3	3	3	3	3	2
Resistance to acids	SK	2	2	2	2	2	3
Resistance to acids	Ι V	-72	-53	-44	-71	-47	-11
According to DIN 58191		NO.36	NO.12	NO.59	NO.64	NO.76	LP 405
Priceclass		2	2	3	3	3	1

Properties		HUG1	HUG3	HBG1	HBG2	HFGB4	HFGR4
Equivalent to Schott		UG1	UG3	BG1	BG2	-	-
Density (g/cm³)	ρ	2.79	3.29	2.52	2.34	3.27	2.77
Transition temperature	Tg (°C)	576	456	637	605	487	540
Sag point	Te (°C)	614	489	670	566	526	573
Thermal expansion coefficient	α20/100×10⁷ m/(m×K)	82	100	92	41	66	95
Thermal expansion coefficient	α20/300×10⁷ m/(m×K)	91	107	96	41	71	105
Relative abrasive	Hs, rel	0.94	0.84	0.89	1.39	0.64	0.86
Reflection factor	Rm (d)	0.914	0.901	0.917	0.926	0.902	0.916
Climate resistance	Vk	1-2	3	2-3	1-2	3	2
Resistance to acids	SK	1-2	2	1-2	1	2	1-2
Resistance to acids	Ι V	-96	-85	-91	-97	-88	-92
According to DIN 58191		BP360/86	BP383/106	BP387/177	BP390/117
Priceclass		3	2	1	1	3	2

Priceclass	1	2	3
€/Kg	49.-	39.-	33.-

All prices are shown net.

Discounts only available for filterglasses in priceclass 2 and 3:
Order quantity 50 Kg to 99 Kg 5 %, 100 Kg and more 10 %

Delivery terms: Blocks with the size 160 +50 x 200 +30 x 110 +30 mm
(Special dimensions upon request)

The blocks have two cutted surfaces.
Other surfaces raw or broken.

Minimum order quantity: 1 Block