Explore Technical Resources
Access comprehensive technical documentation, field-tested installation procedures, international certifications, and answers to common questions.
Technical Data Sheets
Complete physical property tables, thermal conductivity curves, and mechanical specifications for every Mingfa product grade. Covers LG-Standard, LG-High Temp, GF-1100 fireproof board, MF-HD high-strength board, and composite brick series.
View Data SheetsInstallation Guides
Step-by-step installation procedures for board cutting, mechanical fixing with stainless steel studs and washers, joint treatment, multi-layer insulation layout, pipe insulation fitting, and furnace lining best practices.
View GuidesCertifications & Standards
ISO 9001:2015 quality management, EN 13501-1 A1 non-combustible classification, ASTM C533 Types I & II compliance, GB/T 10699 national standard conformity, and third-party test reports from accredited laboratories.
View CertificationsFrequently Asked Questions
Answers to common questions on temperature grades, thermal conductivity, board dimensions, cutting methods, moisture resistance, MOQ, lead times, shipping, payment terms, and installation support.
View FAQEN 14306 Standard
European standard for factory-made calcium silicate products. Temperature classes CS1-CS3, CE marking under CPR 305/2011, product types, and Mingfa LG/SCS compliance.
View EN 14306GB/T 10699 Standard
Chinese national standard for calcium silicate insulation. Type I & II classification, density grades, performance requirements, and comparison with ASTM C533, EN 14306, and JIS A9510.
View GB/T 10699Technical Downloads
Download TDS by grade, MSDS (16-section GHS), CoA, installation guides, CAD detail drawings, and CE DoP. Batch-specific documents available.
View DownloadsWhat’s New — Recently Updated Resources
Freshly published and recently refreshed technical resources for buyers and engineers.
Technical Resource Library
Everything engineers and procurement teams need to specify, install, and maintain calcium silicate insulation.
Standards & Specifications
International and Chinese standards governing calcium silicate insulation products.
Installation & Maintenance
Practical guides for installing and maintaining calcium silicate insulation in the field.
Engineering Tools & Downloads
Free calculators and downloadable technical documents for project planning.
Quick Technical Reference
Key calcium silicate insulation parameters at a glance. For full specifications, consult the individual product data sheets.
| Parameter | Value / Range | Remarks |
|---|---|---|
| Thermal Conductivity | λ = 0.056 + 0.00011t W/m·K | Where t = mean temperature in °C. At 100°C: λ ≈ 0.058 W/m·K. At 400°C: λ ≈ 0.100 W/m·K. |
| Density Range | 170 - 900 kg/m³ | From lightweight HCS-17 (170 kg/m³) to high-strength MF-HD (800-850 kg/m³). Higher density increases compressive strength; select per application loading. |
| Maximum Service Temperature | 650°C - 1100°C | Grade 650 matches ASTM C533 Type I (649°C). Grades 1000 and 1100 exceed ASTM C533 Type II (927°C). GF-1100 fireproof board withstands 1100°C fire exposure. |
| Compressive Strength | 2 - 17 MPa | HCS series: 2-3 MPa. MFDJ composite brick: 2.0-2.5 MPa. MF-HD high-strength board: ≥13 MPa tensile. Values at room temperature per GB/T 5072. |
| Flexural Strength | 0.25 - 0.50 MPa (HCS) | Increases with density. HCS-17: ≥0.25 MPa. HCS-25/SCS-25: ≥0.50 MPa. Per GB/T 10699. |
| Linear Shrinkage | ≤2% at rated temperature | Measured after 3-16 hr soak at maximum rated temperature. MFDJ series: ≤1.2% at 900°C × 3h. Per GB/T 10699. |
| Reaction to Fire | Class A1 (non-combustible) | Per EN 13501-1 and GB 8624. No contribution to fire at any stage, including fully developed fire. |
| Moisture Resistance | Not waterproof; weather barrier required | Tolerates occasional moisture better than ceramic fiber. Outdoor installations need metal cladding or mastic weather jacket. Store boards dry before installation. |
Downloadable Technical Data Sheets
Complete physical property tables, thermal conductivity curves, and mechanical specifications for each product grade.
LG-Standard (1000°C) Data Sheet
Standard-density calcium silicate board rated for continuous service at 1,000°C. Density 220-270 kg/m³. Thermal conductivity 0.058 W/m·K at 100°C. Compressive strength 2.5 MPa minimum. Primary backup insulation for cement kilns, reheat furnaces, and general industrial applications.
LG-High Temperature (1100°C) Data Sheet
High-temperature formulation for service at 1,050-1,100°C. Density 250-300 kg/m³. Thermal conductivity 0.065 W/m·K at 100°C. Linear shrinkage 2% maximum at rated temperature. Recommended for burning zone backup insulation in cement kilns and high-temperature furnace linings.
GF-1100 Fireproof Board Data Sheet
Fire-rated calcium silicate board for passive fire protection applications. Tested at 1,100°C fire exposure. Density 350-450 kg/m³. Used in fire doors, fireproof partitions, cable tray fire barriers, EV battery thermal barriers, and steel structure fire protection.
MF-HD High Strength Board Data Sheet
High-density calcium silicate board for structural backing applications. Density 800-850 kg/m³. Tensile strength 13 MPa minimum. Rated to 1,050°C. Permanent backing layer in steel ladles, behind working refractory linings in high-mechanical-stress environments.
Installation & Application Guides
Field-tested installation methods based on 30+ years of on-site experience across 40 countries.
Board Cutting & Fixing Guide
Methods for cutting calcium silicate board to size using hand saws, circular saws, and jigsaws. Stud welding and mechanical fixing systems for attachment to steel shells. Washer and nut torquing specifications. Adhesive bonding recommendations for vertical and overhead installations. Joint treatment and sealing procedures.
Pipe Insulation Installation
Calcium silicate pipe sections and half-shells for steam, hot oil, and process piping up to 650°C. Cutting and fitting around elbows, flanges, and valves. Multi-layer installation for thicker insulation requirements. Protective jacketing selection (aluminum, stainless steel, PVC) and installation. Vapor barrier application for cold and cryogenic service.
Furnace Lining Best Practices
Backup insulation installation sequence for kilns, furnaces, and ladles. Board layout patterns to minimize thermal bridging at joints. Interface details between backup insulation and refractory brick or castable. Quality control checkpoints: stud spacing, board joint alignment, thickness verification. Common installation errors and how to avoid them.
Certifications & Testing
Third-party verification confirms Mingfa products meet international standards for quality, safety, and performance.
ISO 9001:2015 Certificate
Quality management system certification covering product design, raw material procurement, manufacturing, in-process testing, final inspection, and customer service. Audited annually by an accredited certification body. Certificate covers all calcium silicate product lines at the Laizhou manufacturing facility.
EN Standard Compliance
European standard compliance documentation for calcium silicate products exported to the EU market. Testing to EN 1094 series (shaped insulating refractory products), EN 993 series (dense shaped refractory products), and EN 14306 (calcium silicate thermal insulation for building equipment and industrial installations).
ASTM Test Reports
Third-party laboratory test reports to ASTM C533 (calcium silicate block and pipe thermal insulation), ASTM C518 (steady-state thermal transmission), ASTM C165 (compressive properties), and ASTM C356 (linear shrinkage). Tests performed by accredited laboratories in China and internationally.
Patent Portfolio
Approximately 20 national invention patents and utility model patents covering calcium silicate formulation technology, composite board structures, infrared masking agents, and manufacturing processes. Key patents: ZL201410160342.X, ZL201420190704.5, ZL201520851633.3, and others.
Frequently Asked Questions
Answers to the most common technical and commercial questions about calcium silicate insulation products.
Material Comparison Guides
How calcium silicate compares to other common industrial insulation materials. Technical data, temperature limits, and application-specific trade-offs.
Calcium Silicate vs Ceramic Fiber
Compare temperature limits, compressive strength, moisture resistance, and health and safety classification for high-temperature backup insulation.
Read ComparisonCalcium Silicate vs Mineral Wool
Service temperature range, compressive strength under load, density options, and moisture behavior for industrial and building applications.
Read ComparisonCalcium Silicate vs Perlite
Thermal conductivity at elevated temperatures, mechanical strength, water absorption, and typical applications for each material.
Read ComparisonCalcium Silicate vs Vermiculite
Compare thermal performance, structural integrity, chemical resistance, and cost for furnace and kiln backup insulation.
Read ComparisonCalcium Silicate vs Fiberglass
Temperature capability, binder burnout risk, long-term stability, and health considerations for pipe and equipment insulation.
Read ComparisonCalcium Silicate vs Fire Brick
Density, thermal mass, insulating value, and installation cost comparison for furnace lining and backup insulation applications.
Read ComparisonInteractive Calculators
Thermal Conductivity Calculator
Calculate calcium silicate thermal conductivity at any temperature using λ = 0.056 + 0.00011t W/m·K. Includes pre-computed reference table at standard temperatures.
Open CalculatorInsulation Thickness Calculator
Calculate required insulation thickness for flat surfaces. Input hot face, target surface, and ambient temperatures to determine the economic insulation thickness.
Open CalculatorInsulation Selection Guides
Best Insulation for High Temperature
Neutral comparison of 6 high-temperature insulation materials: calcium silicate, ceramic fiber, mineral wool, perlite, microporous, and IFB.
Read GuideBest Insulation for Steam Pipes
Steam pipe insulation selection guide comparing calcium silicate, mineral wool, fiberglass, cellular glass, and aerogel across temperature ranges.
Read GuideBest Insulation for Kilns and Furnaces
Kiln and furnace insulation design guide covering hot-face vs backup layers, multi-layer wall construction, and material selection by kiln type.
Read GuideProduct Data Sheets
Downloadable specification tables for all Mingfa calcium silicate product series. LG-Standard, LG-High Temp, MF-HD, GF-1100, MFGB, MFBL, and more.
View Data SheetsFurther Reading
- Insulation material comparison guide — calcium silicate vs ceramic fiber vs mineral wool
- Best insulation for high temperature — 6-material neutral comparison
- Best insulation for steam pipes — material selection guide
Key Standards Explained for Buyers
Calcium silicate insulation is specified against a small set of international standards. Understanding what each one covers, and which applies to your project, prevents the most common specification mismatches.
| Standard | Scope | What It Sets | When It Applies |
|---|---|---|---|
| ASTM C533 | Calcium silicate block and pipe thermal insulation | Two temperature types (Type I 649°C, Type II 927°C), density limits, thermal conductivity, shrinkage, moisture | North America and international projects referencing ASTM |
| EN 14306 | Factory-made calcium silicate products (EU) | Product classes, dimensional tolerances, thermal and mechanical requirements, CE marking basis | EU and EEA projects; basis for CE marking |
| GB/T 10699 | Chinese national standard for calcium silicate thermal insulation | Grades by density/temperature, physical and thermal requirements, test methods | Chinese domestic projects and Chinese-origin procurement |
| EN 13501-1 | Fire classification of construction products (EU) | Reaction-to-fire classes A1-F based on non-combustibility and flame spread testing | All EU construction applications; A1 is the non-combustible class |
| ASTM E84 | Surface burning characteristics (US) | Flame spread and smoke developed indices (Class A = 0-25 / 0-450) | US code applications for surface flame spread |
| ISO 1182 | Non-combustibility test | Temperature rise and mass loss limits in a small furnace test | International non-combustibility verification |
Reading across standards: a product can be simultaneously ASTM C533 Type II compliant, EN 14306 classified, EN 13501-1 A1, and GB/T 10699 qualified — the standards set different properties rather than competing versions of the same property. When a specification cites a standard your supplier does not know, that is a red flag; Mingfa manufactures and tests to all four, and our certifications page documents the test certificates available per standard.
Thermal Design Reference Data
Engineers regularly need quick reference values when dimensioning insulation. The tables below cover the two most common calculations: thermal conductivity by grade and temperature, and the pipe insulation thickness rules of thumb.
| Mean Temperature | LG-Standard 170-250 kg/m³ | LG-High Temp 250-270 kg/m³ | MF-HD 800-850 kg/m³ |
|---|---|---|---|
| 100°C | ≤0.058 W/m·K | ≤0.065 W/m·K | ≤0.095 W/m·K |
| 200°C | ≤0.065 W/m·K | ≤0.075 W/m·K | ≤0.115 W/m·K |
| 400°C | ≤0.088 W/m·K | ≤0.095 W/m·K | ≤0.150 W/m·K |
| 600°C | ≤0.110 W/m·K | ≤0.118 W/m·K | ≤0.185 W/m·K |
| 800°C | ≤0.135 W/m·K | ≤0.145 W/m·K | ≤0.210 W/m·K |
Pipe insulation thickness rules of thumb (steam service, target outer surface ≤55°C): a 4-inch (100mm) main at 400°C typically needs 75-100mm of calcium silicate; a 12-inch (300mm) main at the same temperature 100-125mm; small-bore lines below 2 inches require proportionally thicker insulation relative to diameter because the surface-area-to-volume ratio rises. For an exact calculation per project, use the online thickness calculator, which implements the ASTM C680 method and accepts your pipe size, operating temperature, and target surface temperature as inputs.
Linear shrinkage allowance: ASTM C533 permits up to 2% linear shrinkage at rated temperature for Type I/II material; Mingfa production values are ≤1.5% at rated temperature (ASTM C356, 24 h). In long, rigid systems (hot gas ducts, furnace casing), allow for the combined thermal expansion of the equipment and the insulation's own shrinkage when designing joint spacing.
Installation Best Practices Summary
Site installation quality determines whether the material performs to its test data. The practices below are drawn from the installation guides in this library and apply across board, pipe section, and shaped part installations.
Cutting & Fitting
Carbide-tipped saws for straight cuts; jigsaw with carbide blade for curves; score-and-snap for thin boards (≤25mm). Always use dust extraction and a P2/N95 respirator. Seal cut edges that will see moisture. Accuracy target ±1mm on fitted boards; gaps over 2mm should be filled, not tolerated.
Pipe Sections
Fit half-shells with longitudinal joints staggered between adjacent sections (no continuous through-gap). Secure with galvanized steel wire or stainless banding at spacing per ASTM C450 (≈300mm). Double-layer systems: stagger both longitudinal and radial joints; apply mastic or sealant between layers where the spec requires.
Jacketing & Weather Protection
Outdoor insulation requires a weather jacket (aluminum or stainless steel) with sealed laps. The jacket is the vapor barrier — install it before the insulation sees rain. For CUI-sensitive systems, follow the project's corrosion-under-insulation specification: sealed ends, weep holes where required, and coating of the pipe surface per spec.
Full procedures with diagrams are in the installation guides; site teams can also arrange remote or on-site training through the installation training program.
Selecting the Right Product Family for Your Application
The technical library is organized by product family and application. Use this map to reach the right resource quickly.
| You Need | Start Here | Then See |
|---|---|---|
| Board specification and grade selection | Calcium Silicate Board | Technical data sheets, density FAQ |
| Pipe insulation sizing | Pipe Insulation | Thickness calculator, installation guides |
| Custom / non-standard shapes | Shaped Parts | OEM page, drawing submission |
| Fire protection specification | Fire Board | Fire standards comparison, certifications |
| Compliance documentation for a tender | Certifications | Downloads page, standards explained |
| Material comparison for a re-spec | Comparison Hub | Individual vs pages |
| Field problem diagnosis | Troubleshooting | Pipe repair guide, FAQ |
If the map does not answer your question, the quickest route is the contact form: specify your operating temperature, geometry, and environment, and an engineer responds within one business day with a product recommendation and the supporting technical documentation.
Quality Assurance & Documentation Chain
For a factory-direct supplier, the documentation that accompanies the material is as important as the material itself — it is what your quality auditor, insurance assessor, and end client will review. Mingfa's documentation chain is built to survive that review.
Production Testing
Every batch is tested in our Laizhou QC laboratory: density (ASTM C302/C303), compressive and flexural strength (ASTM C165/C203), thermal conductivity (ASTM C518), linear shrinkage (ASTM C356), and moisture (ASTM C533). The laboratory runs guarded hot plate, compression testers, and muffle furnaces in-house — no outsourced 'typical values'.
Batch Certificates
Each shipment includes batch test certificates carrying the batch number printed on the pallet labels, with measured values per property and the test methods used. Raw material lot numbers are recorded against the batch, so the chain runs from raw materials to delivered pallet — the traceability that project quality systems require.
Third-Party Verification
For projects requiring independent verification, SGS, Bureau Veritas, or customer-nominated agencies can inspect the consignment at the factory before shipment (pre-shipment inspection) or at the destination. EN 10204 Type 3.1 certificates are available for orders specifying them, and ISO 9001:2015 certification is current and verifiable.
What to ask any calcium silicate supplier for: (1) batch test certificates matching delivered pallet labels, not a generic brochure; (2) the standard each test follows, stated explicitly; (3) a live or recorded factory tour showing the laboratory equipment; (4) customs export records under the supplier's own name, confirming manufacturer status; (5) reference customers in your region. A supplier that cannot produce these five items should be treated as a trading company regardless of how its website presents itself.
Common Technical Questions
What is the maximum continuous service temperature of calcium silicate insulation?
Standard-grade calcium silicate board is rated to 1000°C continuous; the LG-High Temp grade reaches 1100°C, exceeding ASTM C533 Type II (927°C) by 173°C. Above these limits the xonotlite crystal structure begins to transform and shrinkage accelerates. Always select a grade rated at least 50-100°C above your peak operating temperature to leave a safety margin for process excursions.
What does the R-value of calcium silicate insulation equal?
R-value (thermal resistance) is thickness divided by thermal conductivity: R = t/λ. A 50mm board of LG-Standard grade at 100°C mean (λ = 0.058 W/m·K) gives R ≈ 0.86 m²·K/W; at 400°C mean (λ = 0.100) the same board gives R ≈ 0.50. Because λ rises with temperature, R-value falls at higher service temperatures — quote R-value with the mean temperature stated, or it is meaningless across suppliers.
Does calcium silicate contain asbestos or other hazardous fibers?
No. Calcium silicate is manufactured from lime and silica sand reacted in autoclaves to form the mineral xonotlite (6CaO·6SiO₂·H₂O). It contains no asbestos and no fibrous binders; the material is non-fibrous, inert, and classified non-combustible (A1). The dust generated when cutting is a nuisance particulate, not a classified hazard, but dust extraction and a P2/N95 respirator are standard practice during cutting.
How do I compare quotes from different calcium silicate suppliers?
Compare on the same specification basis: density grade (not just 'calcium silicate board'), temperature rating with the standard cited (ASTM C533 Type II vs '1000°C'), test method for each property, dimensional tolerance, packaging standard, and whether batch certificates ship with the order. Price per cubic meter is only meaningful when these inputs match. Our technical team provides the comparison data for its own products and will walk a procurement team through the specification sheet line by line.
What is the difference between calcium silicate board and fiber cement board?
They are different materials for different applications. Fiber cement board is a building product (cement, cellulose fibers, sand) used for cladding and wet-area linings; it degrades above 150-200°C as the cement binder dehydrates and has no xonotlite crystal phase. Calcium silicate insulation board is an industrial product made from lime and silica reacted in autoclaves to form xonotlite; it is rated to 1000-1100°C with thermal conductivity around 0.06 W/m·K, versus roughly 0.25 for fiber cement. Fiber cement cannot serve any high-temperature application; calcium silicate board is not a building cladding material.
Technical Documents & How to Request Them
The technical library page links the documents buyers need at each stage of a project — from tender specification to site acceptance. The download list below shows what is available and what needs to be requested by email.
| Document | Availability | Typical Use |
|---|---|---|
| Technical data sheets (TDS) | Request by email | Grade-by-grade physical and thermal properties for specification |
| Material safety data sheet (MSDS) | Request by email | Handling, dust control, and storage requirements for site teams |
| Certificate of analysis (CoA) | Ships with order | Batch-specific measured values matching delivered pallet labels |
| ISO 9001 certificate | Download / request | Vendor qualification files |
| EN 13501-1 / ASTM test reports | Request by email | Reaction-to-fire and mechanical property verification |
| CAD details (DXF/DWG) | Request by email | Shaped part machining and installation drawing integration |
| Installation manuals | Library download | Site installation and acceptance procedures |
Documents are issued in English as standard; Chinese versions available on request. For a tender package, request the documents by email with your company and project details, and the complete set is returned within two business days. The downloads page holds the self-service items; anything marked 'request' is issued with the sender's details attached so the documents carry your project reference.
Maintenance & Field Inspection Guidance
Insulation performs for decades when installed correctly and left undisturbed, but field damage and moisture ingress do occur. The inspection guidance below helps maintenance teams decide when repair is due and when replacement is required.
Routine Inspection
Annual walk-down on insulated systems: check jacket integrity (tears, open laps, missing fasteners), look for water staining at supports and low points, verify insulation is not compressed at saddles or hangers, and record surface temperatures with an IR thermometer at representative points to detect insulation loss.
Wet Insulation Handling
If calcium silicate becomes wet in service, remove the jacket, dry by gradual heating (ramp ≤50°C/hour to 150°C), and re-jacket with a sealed vapor barrier. Properties recover fully because the xonotlite structure is not water-degraded. If the wetting was repeated or long-standing, sample and test before reuse.
Repair vs Replacement
Localized chipping and edge damage: repair with mastic or a fitted patch of the same grade. Compressed or crushed sections (heavy foot traffic, dropped loads): replace, because compressed insulation loses thermal performance permanently. Sections contaminated by oil or chemicals: replace — contamination changes the material's behavior at temperature.
The troubleshooting guide covers the full diagnosis set with decision trees; the pipe repair guide details section replacement procedure for pipe insulation.
Engineers and buyers who work through this library typically start with the standards explained section to align specification language, use the thermal reference data for initial sizing, confirm product choice through the product family map, and close the loop with the documentation chain when writing their tender package. If a technical question is not covered here, the troubleshooting guide, FAQ pages, and the engineering contact form cover the remainder — and every inquiry receives a written answer with the standard or test method cited.
Updates to this library are listed in the What's New section on this page, so returning buyers and site teams can see at a glance which resources were refreshed and when.
Bookmark the library for specification work, and contact the engineering team directly for anything the reference data does not answer.
All technical content reviewed by the Mingfa engineering team before publication.
About the Author — Mingfa Insulation Technical Team
Mingfa Insulation's technical content is authored by our in-house engineering team with 34+ years of specialized experience in calcium silicate R&D and manufacturing. Established in 1991 as a joint venture with the China Building Materials Academy, our team holds ~20 national patents. For technical inquiries, contact lzmfgr@163.com.