项目 |
指标 |
|||||||
JM23 |
JM25 |
JM26 |
JM27 |
JM28 |
JM30 |
JM32 |
||
Al2O3 % |
≥40 |
≥50 |
≥55 |
≥60 |
≥65 |
≥70 |
≥77 |
|
Fe2O3 % |
≤1.0 |
≤1.0 |
≤0.9 |
≤0.8 |
≤0.7 |
≤0.6 |
≤0.5 |
|
体积密度 g/cm3 |
≤0.55 |
≤0.80 |
≤0.85 |
≤0.9 |
≤0.95 |
≤1.05 |
≤1.35 |
|
常温耐压强度MPa |
≥1.0 |
≥1.5 |
≥2.0 |
≥2.5 |
≥2.5 |
≥3.0 |
≥3.5 |
|
加热永久线变化 % |
1230℃×12h |
1350℃×12h |
1400℃×12h |
1450℃×12h |
1510℃×12h |
1620℃×12h |
1730℃×12h |
|
-1.5~0.5 |
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导热系数 W/(m·K) |
200±25℃ |
≤0.18 |
≤0.26 |
≤0.28 |
≤0.32 |
≤0.35 |
≤0.42 |
≤0.56 |
350±25℃ |
≤0.20 |
≤0.28 |
≤0.30 |
≤0.32 |
≤0.37 |
≤0.44 |
≤0.60 |
|
600±25℃ |
≤0.22 |
≤0.30 |
≤0.33 |
≤0.36 |
≤0.39 |
≤0.46 |
≤0.64 |
|
0.05MPa荷重软化温度 T0.5 ℃ |
≥1080 |
≥1200 |
≥1250 |
≥1300 |
≥1360 |
≥1470 |
≥1570 |