LN—55

LN—65

LN—75

LN—65P

GN—75P

GN—85P

GN—90P

ω（Al2O3）（%）

ω（Al2O3）（%）not less than

55

65

75

65

75

85

90

(℃)

Refractoriness (℃ ) not less than

1760

1780

1780

1780

1780

1780

1800

（MPa）

Cold bond strength (MPa) not less than

110℃

After drying at 110℃

1.0

1.0

1.0

2.0

2.0

2.0

2.0

1400℃ ×3h

After firing at 1400℃ ×3h

4.0

4.0

4.0

6.0

6.0

—

—

1500℃ ×3h

After firing at 1500℃ ×3h

—

6.0

6.0

0.2MPa Ti/℃

0.2MPa refractoriness under load Ti/℃ not less than

—

1400

1600

1650

（%）

Permanent linear change

rate after heating (%)

1400℃ ×3h

After firing at 1400℃ ×3h

-5 ～ +1

—

1500℃ ×3h

After firing at 1500℃ ×3h

—

-5 ～ +1

（min） Bonding time (min)

1 ～ 3

（%）

Granularity (%)

< 1.0 ㎜

100

> 0.5 ㎜ ，

> 0.5mm, Not greater than

2

< 0.075 ㎜， < 0.075mm, Not less than

50

40

：，。 Note: Bonding time can be negotiated if special requirements exist.