Alumina Fiber Blanket

30 / Jul / 2025

Shandong Dongheng Sinofibre New Material Co., Ltd. specializes in alumina fiber and fiber products. One of the company's popular products is 72-type alumina fiber blanket,belonging to the alumina-silica system, 72% alumina content with 28% silica content.

The alumina fiber blanket uses alumina fibers prepared by the "sol-gel" method as raw materials. The internal structure of the fibers is dense, and the crystal form is stable. After needle-punching treatment, the interweaving degree between fibers is improved, which gives it good anti-stratification ability, tensile strength and surface flatness. The alumina fiber blanket has excellent thermal insulation performance under high-temperature working conditions and can be used for a long time in relatively extreme environments.

Main Features of Alumina Fiber Blanket:

1. Excellent thermal stability , can be used for a long time at working conditions

above 1300 ℃ , up to 1600 ℃ ;

2. Acid and alkali resistance, with excellent resistance to other chemicals except

hydrogen fluoride, phosphoric acid and strong alkali;

3. Excellent tensile strength;

4. Excellent thermal insulation performance and low thermal conductivity ;

5. It has high friction coefficient and good stability, and can provide long-term

stable physical support for various carriers with higher safety factor.

The 72-type alumina fiber blanket has the characteristics of low density, low thermal conductivity, low thermal expansion coefficient, etc., as well as excellent high-temperature mechanical properties, chemical stability, electrical insulation, creep resistance and thermal shock resistance. Therefore, it has broad application prospects in high-temperature engineering fields such as ordnance, aerospace, and high-temperature protection fields such as industrial kiln linings.

Alumina Fiber Blanket

Alumina Fiber Blanket Typical Technical Parameters

Serial Number	Project		Test Method	Technical Indicators
1	Chemical Structure Al₂O₃ :SiO₂(%)		GB/T 6900-2016	72:28
2	Appearance		GB/T 10220-2012	White, blanket-like, without defects or impurities
3	Mineral Structure		XRD	δ-Al₂O₃ /γ-Al₂O₃ /Mullite
4	Average Fiber Diameter (μm)		GB/T 5480-2017	5～7
5	Heating Permanent Line Change (%)		GB/T 17911-2018	1400℃×24h<1%
				1650℃×24h≤1%
6	Thermal Conductivity (W/m ·k) ( Reference Value )	600℃	GB/T 17911-2018	BD=100kg/ m3 0.067 0.129 0.170	BD= 130kg/ m3 0.078 0.148 0.213	BD= 150kg/ m3 0.091 0.172 0.266
		1000℃
		1200℃
7	Tensile Strength (KPa)		GB/T 17911-2018	BD= 100kg/ m3 ≥50	BD= 130kg/ m3 ≥70	BD= 150kg/ m3 ≥95

Alumina Fiber Blanket Product Matrix

Product Specifications	Length/Meter		Width/MM		Thickness/MM		Bulk Density Kg/M3
Product Specifications	Normal Value	Limit Deviation	Normal Value	Limit Deviation	Normal Value	Limit Deviation	Normal Value	Limit Deviation
72-3-100	7.2/10.8/14.4	0~4%	610	597.8~634.4	3	2~4	100	85~114
72-3-128	7.2/10.8/14.4		610		3	2~4	128	113~147
72-3-150	7.2/10.8/14.4		610		3	2~4	150	135～175
72-5-100	7.2/10.8/14.4		610		5	3~7	100	85~114
72-5-128	7.2/10.8/14.4		610		5	3~7	128	113~147
72-5-150	7.2/10.8/14.4		610		5	3~7	150	135~175
72-6-100	7.2/10.8/14.4		610		6	4~8	100	85~114
72-6-128	7.2/10.8/14.4		610		6	4~8	128	113~147
72-6-150	7.2/10.8/14.4		610		6	4~8	150	135~175
72-7.5-100	7.2/10.8/14.4		610		7.5	5.5~9.5	100	85~114
72-7.5-128	7.2/10.8/14.4		610		7.5	5.5~9.5	128	113~147
72-7.5-150	7.2/10.8/14.4		610		7.5	5.5~9.5	150	135~175
72-8.5-100	7.2/10.8/14.4		610		8.5	6.5~10.5	100	85~114
72-8.5-128	7.2/10.8/14.4		610		8.5	6.5~10.5	128	113~147
72-8.5-150	7.2/10.8/14.4		610		8.5	6.5~10.5	150	135~175
72-10-100	7.2/10.8/14.4		610		10	8~12	100	85~114
72-10-128	7.2/10.8/14.4		610		10	8~12	128	113~147
72-10-150	7.2/10.8/14.4		610		10	8~12	150	135~175
72-12.5-100	7.2/10.8/14.4		610		12.5	10.5~16.5	100	85~114
72-12.5-128	7.2/10.8/14.4		610		12.5	10.5~16.5	128	113~147
72-12.5-150	7.2/10.8/14.4		610		12.5	10.5~16.5	150	135~175
72-20-100	3.6/7.2		610		20	18~24	100	85~114
72-20-128	3.6/7.2		610		20	18~24	128	113~147
72-25-100	3.6/7.2		610		25	23~29	100	85~114
72-25-128	3.6/7.2		610		25	23~29	128	113~147

Note:Other specifications of product indicators shall be deternined by agreement between the supply and demand parties.If there is no special agreement.The closest specification shall be matched in the matrix table.

Alumina Fiber Blanket Packing Specifications

Serial Number	Packagig Materials	Unit	Configurationper Box Quantity	Role and Function
1	Carton	Only	1	Support products
2	PE Bag	Only	1	Wrap the product, seal it against dust and moisture,and adhere to the inner wall of the carton
3	Paper Separator	Open	2	Place it at the upper and lower ends of the carton toprevent the carton folding edge from rebounding and damaging the product.
4	Desiccant	Bag	2 -6	Place in a PE bag to prevent moisture from entering the product during packaging
5	Outer Box Label	Open	2	Posted on the symmetrical side of the outer box for easy identification and product collection
6	Sealing Tape	Strip	2	Sealing function on both sides of the carton
7	Stretch Film	/	1	Wrapped around the outside of the carton to prevent dust and moisture, and to strengthen the attachmentbetween cartons
8	Shovel Board	Only	1	Wooden, supporting cartons, convenient for logistics and transportation
9	Certificate	Open	1	Finished products are inspected and qualified, and the certificate is placed for distinction
1 0	Packing Tape	Strip	6	Generally used for export products, fixing goods and pallets
1 1	Honeycomb Panel	Indivual	1pc/tray	Covering each support top for protection
1 2	Corner Guard	M	Depends on the tray 6 ~ 10	Protect the corners ofthe carton

Note: Packaging specifications can be agreed upon by both parties.