This product is a laminated product which made with the chemical treatment electrical purposed alkali-free glass cloth as the backing material,by hot pressing with high Tg epoxy resin as binder.It has high mechanical strength under high temperature,with good electrical stability under high humidity.The thermostability is grade F,suitable for all kinds of motor, electric appliances,electronic and other fields.1.Good electrical stability under high humidity; 2.High mechanical strength under high temperature, the mechanical strength retention rate≥50% under 180℃; 3.Moisture resistance; 4.Heat resistance; 5.Temperature resistance:Grade H

NO.	ITEM				UNIT	INDEX VALUE
1	Density				g/cm³	1.8-2.0
2	Water absorption Rate				%	≤0.5
3	Vertical bending strength		Normal	Lengthway	MPa	≥450
				Horizontal		≥380
			180±5℃	Lengthway		≥250
				Horizontal		≥190
4	Impact strength (charpy type)		No  gap	Lengthway	KJ/m²	≥180
				Horizontal		≥137
5	Compression strength			Lengthway	MPa	≥500
				Horizontal		≥250
6	Tensile strength			Lengthway	MPa	≥320
				Horizontal		≥300
7	Vertical electric strength （in oil of 90℃±2℃）			1mm	KV/mm	≥17.0
				2mm		≥14.9
				3mm		≥13.8
8	Parallel breakdown voltage(1 min in oil of 90℃±2℃）				KV	≥40
9	Dielectric dissiption factor（50Hz)				-	≤0.04
10	Parrallel Insulation Resistance			Normal	Ω	≥1.0×1012
				After soaking  for 24hours		≥1.0×1010

In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates - Part 4: epoxy resin hard laminates. Appareance: the surface should be flat, free of bubbles, pits and wrinkles, but other defects that do not affect the use are allowed, such as: scratches, indentation, stains and a few spots.The edge shall be cut neatly, and the end face shall not be delaminated and cracked.Suitable for all kinds of motor, electric appliances,electronic and other fields.