Calcium Silicate Board

Navigation

Property

CONSTITUENT Hydrated calcium silicate, lime, sand, inorganic fiber and cement. Asbestos shall not be used as an ingredient or component of the product. Quartz is mixed with lime and a little cellulose fibre as reinforcement.
GRADE ASTM C 656:2001

Grade Typical Density* (kg/m3)T
1 577
2 737
3 961
4 224
5 288
6 449
7 641
8 961

* Depends very much on the cement content

 

PAPER SURFACE
  • Standard thickness: 6mm, 9mm and 12mm
  • Standard sheet size: 1220mm x 2440mm
ALKALINITY pH: 9-12
TYPICAL MOISTURE CONTENT Depending on the environment condition, range from 3.5 to 10%(air-dried)
FIRE RESISTANCE Calcium silicate board is non-combustible material
COMPRESSIVE STRENGTH ASTM C 656:2001

Grade Compressive Strength, min (psi)
1 900
2 1000
3 2000
4 200
5 300
6 600
7 2000
8 4000

 
THERMAL CONDUCTIVITY BS 3958: Part 2: 1982

Type 1 Type 2
Temperature (ºC) Thermal Conductivity (W/m K) Temperature (ºC) Thermal Conductivity (W/m K)
100 0.061 – –
150 0.067 – –
200 0.074 200 0.074
250 0.080 250 0.080
300 0.087 300 0.087
350 0.094 350 0.094
400 0.102 400 0.102
425 0.106 450 0.110
– . 500 0.120

 
COEFFICIENT OF LINEAR EXPANSION 2.5-6.4 X 10-6 m/ mK
FLEXURAL STRENGTH ASTM C 656:2001

Grade Flexural Strength, min (psi)
1 350
2 550
3 900
4 100
5 200
6 350
7 800
8 1200
TENSILE STRENGTH Longitudinal: 10 N/mm²

Transverse: 1.3-4 N/mm²