Item

Index

NG-
1.5

NG-
1.3a

NG-
1.3b

NG-
1.0

NG-
0.9

NG-
0.8

NG-
0.7

NG-
0.6

NG-
0.5

NG
-0.4

Bulk density g/cm3,≤

1.5

1.3

1.3

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Compress strength MPa

≥5.9

≥4.4

≥3.9

≥2.9

≥2.5

≥2. 5

≥2.0

≥1.5

≥1.2

≥1.0

Testing temperature when reheated with 2% contracting rate

1400

1400

1350

1350

1300

1250

1250

1200

1150

1150

Thermal conductivity ,
W/m·K350±25

≤0.7

≤0.6

≤0.6

≤0.5

≤0.4

≤0.35

≤0.35

≤0.25

≤0.25

≤0.2