Thermal insulation

Check out this selection table.

http://www.engineeringtoolbox.com/insulation-temperatures-d_922.html

You might want to look at polyurethane.....has an R Value of 7-8 and melts at 280C.....should work, is flexible, and twice or more the R value of calcium silicate, so can be thinner.

What is the service? Pipe or vessel? Is maintenance frequent causing damage to calcium silicate?

It is on pipe of 150NB

No frequent service is required

Material is used in marine application

For marine application, lightness is important. Use mineral wool

Dear,

C.S is good for steam pipes conveying steam and is the best material with thin wall thickness application.

The best is MINERAL WOOL. But the thickness of this application (approximately )will be three to four times that of CS.

But can withsatand up to 1000 digrees.

Karan

Microprous insulation , this is more efficiently than CS and Thicknes also 3 times lesser than CS at the same temprature requirements.

yuva...