Main product
BASALT ROVING
Continuous-fiber roving
Continuous fiber drawn and wound into spools, supplied by linear density and sizing type; suitable for composite processing, weaving and R&D prototyping.
Basalt Fiber · Material Overview
BASALT FIBER MATERIALS
A continuous fiber made from natural basalt rock: tensile strength 3,500–3,800 MPa, long-term service temperature −260 to 700 °C, Class A non-combustible. Wufang Zhigong supplies basalt fiber materials to specification, with samples for verification and bulk supply.
WHAT IS BASALT FIBER
From a Rock to a Thousand Threads
Basalt is one of the most widespread volcanic rocks in the Earth's crust (about 30%), with abundant reserves and stable composition. Basalt fiber is melt-drawn from natural rock at around 1,450 °C, with no pollution in production, and the fiber is naturally flame-retardant and weather-resistant.
Alongside carbon fiber and aramid, it is one of the four high-performance fibers promoted under China's national 863 research program (1986–2016) and was listed as a key strategic new material in China's 14th Five-Year Plan (2021–2025); China accounts for over 60% of global basalt fiber capacity (source: publicly available industry data, 2024).
In short: carbon-fiber-class performance at glass-fiber prices, the cost-effective choice for engineering composites.
PERFORMANCE IN FOUR DIMENSIONS
Four Dimensions of Performance for Demanding Conditions
3500–3800 MPa
Tensile strength
Specific strength about 20–35× that of steel · 30–50% weight savings
−260 to 700 °C
Long-term service temperature range
Limiting oxygen index ≥68% (Class A non-combustible)
<0.5%
24h water absorption
Salt spray >3,000 h · resists acids, alkalis and UV degradation
>98%
RF transmittance
Dielectric loss tangent <0.01 (50% lower than glass fiber)
Sources: publicly available industry data and project experience (2025); typical values are subject to test reports.
WHAT WE SUPPLY
What We Supply: Materials in Stock, Specs on Request
Mainly continuous basalt fiber roving; fabric and composite panel samples can be sent for verification, and bulk requirements are supplied to specification.
Main product
Supplied to order
BASALT FABRIC
Basalt fiber fabric
Plain weave and other standard fabrics supplied by width and areal weight, for hand lay-up, compression molding, vacuum infusion and other composite processes.
Samples available
SAMPLES
Physical samples · prototype comparison
Roving spools, fabric swatches and composite panel samples can all be shipped: see the material and verify its properties before you buy.
MATERIAL COMPARISON
At a Glance Against Common Materials
Compiled from publicly available industry data for material selection reference (2025 figures). US$ figures converted at the Sep 21, 2026 CNY/USD central parity rate (6.7487).
| Parameter | Basalt fiber ★ recommended | Carbon fiber (T300) | E-glass | Aluminum alloy |
|---|---|---|---|---|
| Tensile strength (MPa) | 3500–3800 | ~3500 | ~2400 | ~310 |
| Density (g/cm³) | 2.65 | 1.78 | 2.54 | 2.7 |
| Long-term service temperature (°C) | −260 to 700 | ~500 | ~350 | 200–300 |
| Typical price (CNY/kg) | 30–80 ≈ US$4.5–12 | 150–300 ≈ US$22–44 | 8–15 ≈ US$1.2–2.2 | 20–40 ≈ US$3–6 |
| Flame resistance | Class A non-combustible (LOI ≥68%) | Non-combustible (carbon-based) | Non-combustible | Non-combustible |
| Value for money | ★★★★★ | ★★★ | ★★★ | ★★★ |
Sample First, Order Later
Roving spools, fabric swatches and composite panel samples can all be shipped for verification.
Request Samples
Hotline4008-119-722