Fireclay Refractory Mortars
Mark & model：NN-30、NN-38、NN-42、NN-45A、NN-45B
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FIRECLAY REFRACTORY MORTARS |
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Goods Brand |
NN-30 |
NN-38 |
NN-42 |
NN-45A |
NN-45B |
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Refractoriness (℃) |
1630 |
1690 |
1710 |
1730 |
1730 |
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Al2O3(%) min |
30 |
38 |
42 |
45 |
45 |
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Cold bending strength (MPa) min |
after drying at 110℃ |
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after burning at 1200℃x3h |
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Refractriness under load 0.2 Mpa T2.0 (℃) min |
*** |
1200 |
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Shrinkage after reheating (%) max |
after burning at 1200℃x3h |
+1~-3 |
*** |
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after burning at 1300℃x3h |
** |
+1~-5 |
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Bonding time (min) |
1~3 |
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Size (%) |
-1.0mm |
100 |
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+0.5mm max |
2 |
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-0.074mm min |
50 |
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