手機(jī)掃一掃
指標(biāo)/牌號(hào) | N-1 | N-2a | N-2b | N-3a | N-3b | N-4 | N-5 | N-6 | |
耐火度℃≥ | 1750 | 1730 | 1730 | 1710 | 1710 | 1690 | 1670 | 1580 | |
0．2Mpa荷重軟化開始溫度≥ | 1400 | 1350 |
| 1320 |
| 1300 |
|
| |
重?zé)€變化% | 1400℃2h | +0.1 -0.4 | +0.1 -0.5 | +0.2 -0.5 |
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1350℃2h |
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| +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 |
| |
顯氣孔率% ≤ | 22 | 24 | 26 | 24 | 26 | 24 | 26 | 28 | |
常溫耐壓強(qiáng)度Mpa℃≥ | 30 | 25 | 20 | 20 | 15 | 20 | 15 | 15 | |
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