🏭 Factory Direct · Qingdao, China

Professional Manufacturer Since 2008

Calcium Silicate Board Manufacturer

High Density & Thermal Insulation Solutions

We manufacture and supply calcium silicate boards for thermal insulation, fire protection and industrial applications. Our product range covers density from 250 kg/m³ to 1200 kg/m³ with custom sizes, CNC machining and OEM production support.

1100°CMax Service Temp
250–1200kg/m³ Density Range
30,000m³ Annual Capacity
Calcium silicate board product range, density 250 to 1200 kg/m³
2503006508509801200

Density 250–1200 kg/m³

Explore Products

Calcium Silicate Board Range

A complete product line — from lightweight low-density insulation boards to ultra-high-density structural grades, fire rated boards and custom CNC machined parts.

Density Selection Guide

Choose the Right Density

Calcium silicate board performance is driven by density. Use the guide below to match a grade to your strength, load and temperature requirements.

Performance Data

Calcium Silicate Board Technical Data Sheet

Verified Technical Data According to Typical Production Standards — full density range from 250 to 1200 kg/m³.

Density Grade / Use Max Service Temp Compressive Strength Flexural Strength Thermal Cond. (800°C / 1472°F)
25015.6 lb/ft³ Ultra Insulation 1050°C1922°F ≥ 1.0 MPa≥ 145 psi ≥ 0.55 MPa≥ 80 psi ≤ 0.165 W/m·K≤ 1.14 BTU·in/hr·ft²·°F
30018.7 lb/ft³ Industrial Insulation 1100°C2012°F ≥ 2.0 MPa≥ 290 psi ≥ 1.2 MPa≥ 174 psi ≤ 0.170 W/m·K≤ 1.18 BTU·in/hr·ft²·°F
65040.6 lb/ft³ General Purpose 1000°C1832°F ≥ 5.0 MPa≥ 725 psi ≥ 3.0 MPa≥ 435 psi ≤ 0.19 W/m·K≤ 1.32 BTU·in/hr·ft²·°F
80051.2 lb/ft³ N-17 Carbon Fibre 1100°C2012°F ≥ 21 MPa≥ 3045 psi ≥ 7.6 MPa≥ 1102 psi ≤ 0.14 W/m·K≤ 0.97 BTU·in/hr·ft²·°F
85053.1 lb/ft³ N-14 Structural 1100°C2012°F ≥ 14 MPa≥ 2030 psi ≥ 6.1 MPa≥ 885 psi ≤ 0.16 W/m·K≤ 1.11 BTU·in/hr·ft²·°F
98061.2 lb/ft³ Thermal Shock 1100°C2012°F ≥ 15 MPa≥ 2175 psi ≥ 7.0 MPa≥ 1015 psi ≤ 0.22 W/m·K≤ 1.53 BTU·in/hr·ft²·°F
102063.7 lb/ft³ Molten Aluminum 1100°C2012°F ≥ 17 MPa≥ 2465 psi ≥ 8.5 MPa≥ 1233 psi ≤ 0.23 W/m·K≤ 1.59 BTU·in/hr·ft²·°F
120074.9 lb/ft³ High Strength 1100°C2012°F ≥ 23 MPa≥ 3335 psi ≥ 15 MPa≥ 2175 psi On request 

All grades are non-asbestos and A1 non-combustible. Density tolerance ±10%. Continuous service temperature for the 800–1020 kg/m³ high-density grades is 1000°C (1832°F); 1100°C (2012°F) is the maximum / peak service temperature. The 650 kg/m³ grade is made-to-order; values are indicative and confirmed on request.

Applications

Industrial Insulation Solutions

Our boards are widely used across industrial furnaces, fire protection, metallurgy, cement and power generation.

Technology

Technical Knowledge Center

Technical resources to help engineers specify the correct calcium silicate board for every project.

Why Choose Us

Factory Advantages

Direct Manufacturing — production capacity, quality control and export experience you can rely on.

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Factory Direct

No middlemen — direct factory pricing and lead times.

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OEM Production

OEM & private-label production to your specification.

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Custom Dimensions

Custom sizes, thicknesses and CNC shaped parts.

Strict QC

Quality control across the full manufacturing process.

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Fast Delivery

Reliable logistics with secure export packaging.

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Global Export

Exporting to USA, Korea, Germany, Spain, India & more.

FAQ

Frequently Asked Questions

What is calcium silicate board?
Calcium silicate board is a rigid, non-asbestos thermal insulation material based on xonotlite (6CaO·6SiO₂·H₂O). It combines low thermal conductivity, high mechanical strength and excellent fire resistance, with a service temperature up to 1100°C.
What density should I choose?
Lower densities (250–650 kg/m³) are used where thermal insulation and light weight are the priority. Higher densities (800–1200 kg/m³) are chosen where compressive strength and load-bearing capacity matter — for example structural insulation and molten metal contact. Our density guide helps you match grade to application.
What is the maximum service temperature?
Low-density insulation grades are rated to a maximum service temperature of 1050°C (continuous ≤950°C), while high-density structural grades are rated up to 1100°C.
Can boards be CNC machined?
Yes. We provide CNC machining and custom shaped parts produced to your drawings, including cut-to-size boards, machined profiles and complex shaped components.
Do you offer custom sizes?
Yes. Standard sizes include 1230×1230 mm, 1250×2500 mm and 1200×600 mm with thickness from 6 mm to 160 mm. Custom dimensions and OEM production are available on request.

Inquiry

Get Technical Support

Send us your application and requirements. Our engineers will reply with density recommendations, technical data sheets and a factory-direct quotation.

  • 📧 Global Sales: sales@calsilboard.com
  • 📱 WhatsApp: +86 156 8913 8837
  • 🌐 www.calsilboard.com
  • ⏱️ Response: Within 24 Hours
  • 📍 No. 17 Guangbo Road, High-tech Zone, Qingdao, Shandong, China