Table1 Kiln furniture

Table1
Item RSIC NSIC
Working temperature (℃) 1600 ℃(Oxid) 1700 ( Red.) 1600 ℃
Sic content (% ) ≥ 99 ≥ 22
Free si content ( % ) ＜ 0.1 ≥ 75
Bulk density (g/cm 3 ) 2.60 ～ 2.70 2.70 ～ 2.80
Apparent porosity (%) ≤ 16 ≤ 12 ～ 15
Crushing strength (Mpa) ≥ 600 ≥ 600
Cold bending strength (Mpa) 80 ～ 90(20 ℃ ) ≥ 150 ～ 160(20 ℃ )
Hot bending strengty (Mpa) 90 ～ 1000(1400 ℃ ) ≥ 160 ～ 180(1200 ℃)
Thermal expansion a×10 -6 ℃ (1500 ℃) 4.70 4.60
Thermal conductivity w/m.k(1200 ℃ ) 23 11.0
Elastic modulus (Gpa) 240 250
Thermal-shock resistance Extremely good Very good

Rollers Beams Plates
28*18 30*30 330*330
30*20 30*40 330*380
33*23 30*50 330*400
35*25 40*40 340*340
38*28 40*50 340*440
40*30 40*60 350*400
40*28 50*50 380*400
42*30 50*60 400*420
45*33 50*70 400*450
50*38 60*70 420*450
55*43 60*80 450*450
60*46 60*90 480*500
    500*500
Table2
ltem unit Data
使用温度 temperature of application ℃ 1380
密度 density a g/cm 3 ﹥ 3.02
气孔率 open porosity % ﹤ 0.1
抗弯强度 bending strength Mpa 250(20 ℃ )
Mpa 280(1200 ℃ )
弹性模量 modulus of elasticity Gpa 330(20 ℃ )
Gpa 300(1200 ℃ )
导热系数 thermal conductivity W/m.k 45(1200 ℃ )
热膨胀系数 coefficient of thermal expansion K -1 × 10 -6 4.5
莫氏硬度 rigidity   13
耐酸碱性 acid-proof alkaline   优 Excellent
Table3
化学成份 Chemical Composition SIC 90% MIN
最高安全使用温度 Max.Service Temp 1150 ℃ ~1450 ℃
耐火度 Refractoriness ﹥ SK39
荷重软化温度 Refractoriness underload ﹥ 1750 ℃ (T 2 )2kg/cm 2
抗折强度 Modulus of Rupturt at room temp ﹥ 500kg/cm 2
高温抗折强度 Modulus of Rupture at 1400 ℃ ﹥ 550kg/cm 2
抗压强度 Compressive Strength ﹥ 1300kg/cm 2
热膨胀率 Thermal Expansion at 1000 ℃ 0.42~0.48%
显气孔率 Apparent Porosity 7~8%
比重 Bulk Density 2.70~2.75g/cm 3
热传导度 Thermal Conductivity at 1000 ℃ 13.5~14.5Kcal/m.hr. ℃

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