MgSO4 Sanding Board
A substrate board of magnesium oxide and magnesium sulfate (MgSO4) with bamboo filler, reinforced with glass-fibre mesh. The surface is sanded for a flatter face and a more accurate thickness, with optional UV sealing for better adhesive bonding.
- Thickness
- 4, 5, 6, 8, 10 mm
- Density
- 1.1–1.2 t/m³
- Bending strength
- ≥ 20–30 MPa
- Bonding strength
- ≥ 1.3 MPa
- Fire resistance
- Heat resistance
- Moisture resistance
- Impact resistance
- Building safe
- Insect resistance
- Mould resistance
- Health safe
Overview
MgSO4 sanding board is a sanded magnesium sulfate board used as the core or underlay of composite boards and flooring. Jiafeng supplies it 4–10 mm thick at 1220 × 2440 mm, density 1.1–1.2 t/m³, A1 non-combustible, with internal bonding strength ≥ 1.3 MPa and optional UV sealing.
It is A1 fire rated, flat, dimensionally stable and environmentally friendly, and is made specifically as the core or underlay material of composite boards and flooring. We can apply UV sealing for better adhesive fusion.
Specifications
Values as published by Jiafeng. Custom thicknesses, sizes and edges on request.
Technical data
| Property | Value |
|---|---|
| Product | Substrate sanded MgSO4 board |
| Composition | MgO + MgSO4 + glass fibre + bamboo fibre |
| Length | 8 ft (2440 mm), custom |
| Width | 4 ft (1220 mm), custom |
| Thickness | 4, 5, 6, 8, 10 mm; others on request |
| Use | Substrate for decorative board |
| Colour | Grey and white |
| Surface | One side or two sides sanded; one side polished |
| Edges | Square |
| Density | 1.1–1.2 t/m³ |
| Combustibility / fire rating | Non-combustible / A1 |
| Moisture content | ≤ 8% |
| Bending strength | ≥ 20–30 MPa |
| Impact strength | > 9 kJ/m² |
| Modulus of elasticity | ≥ 5000 MPa |
| Dry shrinkage | ≤ 0.3% |
| Wet expansion rate | ≤ 0.3% |
| Thermal conductivity | ~0.44 W/m·K |
| Thermal expansion (+20 °C to −20 °C) | 0.01 mm/m·°C |
| Surface alkalinity | pH 8–10 |
| Asbestos analysis | Absent – not measurable |
| Formaldehyde analysis | Absent – not measurable |
| TVOC (ASTM D5116-10) | Below measurable levels of the test instruments |
| Surface / internal bonding strength | ≥ 1.3 MPa |
| Chloride ion content (ASTM C871-11) | 0.012% |
Applications
- Core for composite flooring
- Substrate for decorative boards
- Furniture base and substrate board
Often specified together
Sanded MgO Board
3–30 mm< 0.1 mm
Sanded or polished for accurate thickness, ready for PVC film, HPL and paper lamination.
View product
MgO Floor
15, 18, 19 mm≥ 20–25 MPa
Load-bearing MgSO4 floor board for internal and external subflooring and decking, 15–19 mm.
View product
HPL Laminated MgO Board
6, 8, 10, 12 mm0.5–1 mm
MgO core with HPL on one or both faces, 6–12 mm, for clean rooms, wall systems and furniture.
View productTell us about your project
Send the board type, thickness, size and quantity. We reply with a quotation, loading plan and lead time — usually within 2 hours on working days.
- Your requirementsProduct, thickness, size, edges and the application.
- Quotation and samplesPrice per sheet and per container, and samples for testing.
- Production and shippingTested in our laboratory, packed on pallets, shipped from Shanghai or Ningbo.
Request a quotation
We use your details only to answer your inquiry. See our privacy policy.