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1. Characteristic:
 JM23 and JM26 insulation brick (JM serious thermal insulation bricks) are produced accordance with German industrial standard that especially for export to foreign countries.
 2. Application:
 These insulation bricks are widely used in ceramic kiln and other some heating stove and advices.
 3. JM series physical and chemical index:

Index	Item
	JM20	JM23	JM26	JM28	JM30
Maximum working temperature℃	1100	1260	1430	1540	1650
Bulk, density g/cm3	0.45	0.48	0.78	0.99	1.02
Compress strength Mpa≥	0.8	1.1	1.6	2.1	2.5
Bending strength Mpa≥	0.7	0.9	1.4	1.8	2.0
Reheat liner Change24h≤	1080℃  0.1	1230℃  0.2	1400℃  0.2	1510℃  0.2	1620℃  0.5
Al2O3%≥  Fe2O3%≤	35.0  0.8	37.0  0.7	56.0  0.7	67.0  0.6	73.4  0.5
Thermal conductivity 260℃≤  540℃≤  815℃≤	0.12	0.14	0.32	0.33	0.41
	0.44	0.16	0.34	0.35	0.43
	-	-	0.36	0.37	0.44
Thermal shock resistance	-	-	20	30	30