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| Property | Unit | Characteristic value | JIS K 7137-2 (Ref.) |
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|---|---|---|---|---|---|---|
| No.900 UL | No.920 UL | |||||
| Thickness | [mm] | 0.05 | 0.05 | 0.05±0.01 | ||
| Tensile strength | Lengthwise | Mpa | 50 | 80 | 14.7 or more | |
| Widthwise | Mpa | 11 | 30 | - | ||
| Elongation | Lengthwise | [%] | 360 | 120 | 100 or more | |
| Widthwise | [%] | 340 | 250 | - | ||
| Breakdown voltage | [kV] | 7.4 | 11.3 | 3.5 or more | ||
| Chemical resistance (weight change rate) |
Sodium hydroxide | [%] | -0.01 | -0.02 | Must be no change in appearance and weight variation rate of less than ±0.5%. | |
| Acetone | [%] | +0.02 | +0.02 | |||
| Nitric acid | [%] | +0.05 | +0.08 | |||
| Heat resistance (weight change rate) | Test temperature range 25-350°C | [%] | 0.02 | 0.02 | Weight reduction rate must be less than 0.05%. | |
| Dimensional variation rate | 100°C | Lengthwise | [%] | 1.5 (contraction) | 3.3 (contraction) |
- |
| Widthwise | [%] | 1.2 (stretch) | 0.8 (stretch) |
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| 200°C | Lengthwise | [%] | 2.9 (contraction) | 11.6 (contraction) |
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| Widthwise | [%] | 1.8 (stretch) | 2.4 (stretch) |
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| 260°C | Lengthwise | [%] | 2.8 (contraction) | 18.5 (contraction) |
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| Widthwise | [%] | 1.8 (stretch) | 2.5 (stretch) |
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| Water absorption rate | [%] | 0.00 | 0.00 | - | ||
| Heat conductivity | W/(m・K) (kcal/m・h・°C) |
0.29(0.25) | 0.23(0.20) | - | ||
| Surface roughness | μm | 0.6~1.2 | 0.5 | - | ||