Rock Wool (Mineral Wool) Board
High Strength - Compression Resistant Rock Wool Board
The high strength rock wool board, applies to the exterior of buildings for thermal insulation, like roof, external wall etc.. due to its property of compression resistance, it’s suitable for steel sandwich panel’s fabrication as well, and other industries where both insulation and mechanical strength are required.
There are various grades available, 30kpa, 40kpa, 50kpa, 60kpa etc.Properties: comply with ASTM C 612 / JIS A 9504.
| Items |
Value |
| Density tolerance, % |
+15, -15 |
| Shot content（dia.≥0.25mm). % |
≤12.0 |
| Average fiber diameter, μm |
≤7.0 |
Heat load contraction Temp.
(products with density over 60kg/m3) oC |
≥600 |
Thermal Conductivity
(average temperatur70oC±52oC), W/(m.k) |
≤0.044 |
| Moisture content, % |
≤0.5 |
| Combustion property |
Grade A Incombustible |
| Organic substance, % |
≤4.0 |
| Water repellence (water-proof), % |
≥98 |
Availability of rock wool board
| Compression Resistance |
Density(kg/m3) |
Thickness(mm) |
30Kpa
(against 10% of dimension compressed) |
120 |
100~120 |
| 130 |
80~100 |
| 140 |
50~80 |
40Kpa
(against 10% of dimension compressed) |
140 |
80~100 |
| 150 |
50~80 |
| 160 |
30~80 |
| 180 |
25~70 |
50Kpa
(against 10% of dimension compressed) |
150 |
80 |
| 160 |
50~80 |
| 180 |
30~70 |
| 200 |
25~60 |
60Kpa
(against 10% of dimension compressed) |
160 |
60~80 |
| 180 |
30~70 |
| 200 |
25~60 |
Rigid rock wool board
The product is suitable for large vessels, tanks, ovens and ducts for its good load-bearing property.
Board with wire mesh, kraft paper or aluminium foil facing is available.
They are water repellent and non-hygroscopic.
The wool is neutral or slightly alkaline, and normally not support the growth of molds, fungi and bacteria.
Flexible, semi-rigid rock wool board
The product is used in building walls/ roofs, elevator wells, flat or slightly curved surfaces and other industrial equipment for thermal and sound insulation.
Availability of rock wool board/ slab
| Flex semi-rigid board; Rigid board |
| Thickness |
40 |
50 |
60 |
80 |
100 |
120 |
140 |
150 |
200 |
| (mm) |
kg/m3 |
| 25 |
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| 30 |
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| 35 |
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| 40 |
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| 50 |
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| 65 |
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| 70 |
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| 75 |
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| 80 |
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| 90 |
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| 100 |
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| 110 |
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| 120 |
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| 130 |
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| 140 |
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| 150 |
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Other size or density on request .
Thermal conductivity of rock wool board/ slab (typical figure)
| Mean Temp(oC) |
K-value (W/m.k) |
| Thickness |
40 |
50 |
60 |
80 |
100 |
120 |
140 |
150 |
200 |
| mm |
kg/m3 |
| 50 |
0.043 |
0.041 |
0.039 |
0.038 |
0.037 |
0.037 |
0.037 |
0.037 |
0.039 |
| 100 |
0.054 |
0.049 |
0.046 |
0.044 |
0.043 |
0.042 |
0.043 |
0.042 |
0.045 |
| 150 |
0.068 |
0.061 |
0.058 |
0.053 |
0.051 |
0.050 |
0.049 |
0.049 |
0.052 |
| 200 |
0.086 |
0.074 |
0.071 |
0.064 |
0.060 |
0.059 |
0.057 |
0.057 |
0.060 |
| 250 |
0.106 |
0.090 |
0.088 |
0.076 |
0.071 |
0.069 |
0.066 |
0.066 |
0.069 |
| 300 |
0.131 |
0.109 |
0.106 |
0.091 |
0.084 |
0.082 |
0.081 |
0.080 |
0.079 |
| 350 |
|
0.131 |
0.127 |
0.107 |
0.099 |
0.096 |
0.095 |
0.094 |
0.090 |
| 400 |
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0.126 |
0.107 |
0.111 |
0.109 |
0.107 |
0.102 |
Maximum Service Temperature
- Flexible, semi-rigid boards: 450oC (850oF);
- Rigid boards: 650oC (1200oF)
Sound Absorption of rock wool board/ slab
| Hz |
Flexible, semi-rigid board
(Thickness 75mm) |
Rigid board
(Thickness 75mm) |
| 125 |
0.32 |
0.30 |
| 259 |
0.80 |
0.80 |
| 500 |
1.13 |
1.15 |
| 1000 |
1.09 |
1.12 |
| 2000 |
1.01 |
1.03 |
| 4000 |
1.02 |
1.02 |
Application
