Wollastonite · Exclusive Australian distributor

The needle-shapedmineral that makesmaterials stronger.

Pacificlink Minerals supplies the complete wollastonite range from Dalian Huanqiu Minerals, the company that pioneered the mineral in China, to Australian manufacturers of plastics, coatings, ceramics and steel.

Explore the range See the certificates

ISO 9001 · 14001 · 45001: Certified manufacture
35 grades: Full Huanqiu wollastonite range
Since 1980: China’s wollastonite pioneer
Melbourne: Delivered Australia-wide

Close view of natural wollastonite: fans of fine white needle-shaped crystals radiating from a point

01 · The mineral

Look closer. It is all needles.

Wollastonite grows as fans of long, straight crystals. That shape is the whole point: milled with care, each needle works like a short reinforcing fibre.

Scroll to open the lens

Formula: CaSiO₃; Calcium metasilicate, Ca₃[Si₃O₉] chain structure
Theoretical CaO: 48.25%; Balance is SiO₂ at 51.75%
Mohs hardness: 4.5 – 5.5; Hard enough to reinforce, gentle on tooling
Density: 2.75 – 3.10; g/cm³

Acicular structureA naturally needle-shaped crystal. It behaves as a mineral fibre, which is what gives filled systems their stiffness and dimensional stability.
Super white, asbestos freeNon-toxic, odourless and harmless, with whiteness up to 91 in the finest polymer grades.
Stable at high temperatureHolds its structure and insulates under heat, from ceramic kilns to continuous casting.
Low water and oil absorptionHigher loadings with less resin demand, and less moisture pick-up in the finished part.
Resists corrosion, weather and wearDurable in coatings, friction materials and exterior building products.

Photo: Zbyněk Burival, Wikimedia Commons, CC BY-SA 4.0 (cropped)

02 · The range

35 grades. One mineral.

The full Huanqiu wollastonite range, now available in Australia. Pick a family to see every grade with its published specification.

Polymer grade

Wollastonite mineral fibre for engineering plastics and compounds, sorted by aspect ratio. High L/D grades reinforce like a short fibre; low L/D grades fill with minimal effect on flow.

PP, PA and PBT compounds
Automotive lightweighting
Thin-wall mouldings

High L/D. Aspect ratio up to 20:1. Maximum stiffness, heat deflection and scratch resistance.

High L/D specifications. Aspect ratio up to 20:1. Maximum stiffness, heat deflection and scratch resistance.
Grade	HK-8000F	HK-5000F	HK-2500F	HK-1250F	HK-90
Shape, to scale
D50 (μm)	1.7 ± 0.3	3 ± 1	5 ± 1	10 ± 2	30 ± 3
Whiteness	≥ 91	≥ 90	≥ 90	≥ 88	≥ 70
Loose density (g/cm³)	0.15 – 0.20	0.21 – 0.33	0.24 – 0.36	0.32 – 0.43	0.35 – 0.42
Tapped density (g/cm³)	0.31 ± 0.1	0.50 ± 0.1	0.60 ± 0.1	0.75 ± 0.1	0.75 ± 0.1
Sedimentation (200 ml / 30 g, 30 min)	≥ 120	≥ 110	≥ 100	≥ 80	≥ 70
L/D	12–20 : 1	15–20 : 1	15–20 : 1	15–20 : 1	15–20 : 1
SiO₂ %	≥ 48	≥ 49	≥ 49	≥ 49	≥ 47
CaO %	≥ 43	≥ 43	≥ 43	≥ 43	≥ 43
Fe₂O₃ %	≤ 0.50	≤ 0.35	≤ 0.35	≤ 0.35	≤ 0.50
MgO %	≤ 1.5	≤ 1.5	≤ 1.5	≤ 1.5	≤ 1.8
Al₂O₃ %	≤ 0.80	≤ 0.80	≤ 0.80	≤ 0.80	≤ 1.0
L.O.I. %	≤ 3.0	≤ 3.0	≤ 3.0	≤ 3.0	≤ 5.0

HK-8000F

D50 (μm): 1.7 ± 0.3
Whiteness: ≥ 91
Loose density (g/cm³): 0.15 – 0.20
Tapped density (g/cm³): 0.31 ± 0.1
Sedimentation (200 ml / 30 g, 30 min): ≥ 120
L/D: 12–20 : 1
SiO₂ %: ≥ 48
CaO %: ≥ 43
Fe₂O₃ %: ≤ 0.50
MgO %: ≤ 1.5
Al₂O₃ %: ≤ 0.80
L.O.I. %: ≤ 3.0

Values are the manufacturer’s published specifications. L/D is the length-to-diameter (aspect) ratio. A certificate of analysis for the batch is supplied with each shipment. How to read these figures.

Request a quote for polymer grade

03 · Applications

Eight industries. One reason: the fibre.

01 / 08
Polymers
Reinforcement without glass.
- Higher flexural strength and modulus
- Higher heat deflection temperature
- Better scratch and wear resistance
- Lower shrinkage and warpage in thin walls
- Recyclable, with a significant cost saving
GradesHigh L/DMedium L/DLow L/D
See polymer grades
02 / 08
Coatings
Tougher films, less titanium dioxide.
- Improved scrub and weather resistance
- Higher tensile strength in the film
- Fewer cracks and better levelling
- Replaces part of the TiO₂ to cut cost
GradesY series
See coating grades
03 / 08
Ceramics & building materials
Fire faster, shrink less.
- Lower firing temperature and a shorter cycle
- Stronger green and fired bodies
- Less shrinkage during sintering
- Lower moisture expansion
GradesCeramic bodyGlaze
See ceramic & glaze grades
04 / 08
Metallurgy
A stable base for mould flux.
- Excellent low-temperature fusibility
- Superior continuous casting performance
- Thermal stability
- Consistent chemical composition
GradesWelding and metallurgical
See welding & metallurgy grades
05 / 08
Welding rod
A cleaner, steadier arc.
- Faster melting of the coating
- More stable welding arc
- Less slag spatter, easier slag removal
- Better all-position welding
GradesWelding and metallurgical
See welding & metallurgy grades
06 / 08
Friction materials
An asbestos-free fibre for brakes.
- Low thermal expansion
- Excellent thermal shock resistance
- High friction coefficient
- Higher rigidity and impact strength
GradesHK fibre series
See building material grades
07 / 08
Papermaking
A mineral fibre in the web.
- High whiteness and dielectric strength
- Interweaves with plant fibre into a network
- Resists acids, bases and heat
- Lower production cost
Ask us for the right grade
08 / 08
Pigments
Smooth, glossy, durable.
- Keeps the coating surface smooth and glossy
- Lower oil absorption, better corrosion resistance
- Improved durability and weatherability
- Replaces lithopone and part of the TiO₂
GradesY series
See coating grades

04 · Quality you can check

Three ISO certifications. Open any one.

Every tonne we supply is processed by Dalian Huanqiu Minerals under independently audited quality, environmental and safety systems. Select a badge to see the certificate behind it.

Certificate holder: Dalian Huanqiu Minerals Co., Ltd.
Scope: Processing of non-metallic mineral products (wollastonite and synthetic wollastonite)
Issued: 22 June 2026
Valid to: 21 June 2029
Accreditation: CNAS-accredited certification body, IAF Multilateral Recognition Arrangement

The certificates are issued in Chinese. Numbers can be verified with China’s certification authority. See our quality policy.

Tested batch by batch.

Each batch is tested before release, and the results travel with it as a certificate of analysis.

A mound of fine white wollastonite powder on a blue surface

01ChemistryChemical composition by XRF and XRD.
02Particle sizeFull particle size distribution, D50 reported.
03WhitenessWhiteness and brightness measured per batch.
04MoistureMoisture content and loss on ignition.
05PhysicalDensity, sedimentation and aspect ratio.
06ContaminationScreening before the batch is released.

The manufacturer’s standing

President unit of the China Wollastonite Association
National High-Tech Enterprise
National “Specialised and Novel” Leading Enterprise
CNMIA Enterprise Technology Centre
AAA enterprise credit rating
Listed on China’s NEEQ, stock code 833285

05 · Origin

From the people who found it first.

Dalian Huanqiu Minerals was among the first to discover wollastonite in China, helped write its national standards, and still mines, processes and researches it today. Its mineral fibres hold a leading export share in Japan and South Korea.

1980Wollastonite found in ChinaFounder Mengxian Zhang, then a mining engineer in Lishu County, Jilin, is among the first to identify wollastonite in China.
1981First exportsThe Lishu operation becomes China’s first wollastonite exporter.
1982Writing the standardsZhang leads work on the industry’s first standards and test methods for wollastonite.
1985Dalian processing plantA dedicated wollastonite processing plant is established in Dalian.
1993Dalian Huanqiu foundedThe company is founded and elected president unit of the China Wollastonite Association.
2011R&D centreRelocation to Jinzhou New Area, with a research centre, testing centre and pilot plant.
2015Publicly listedQuoted on China’s National Equities Exchange and Quotations, stock code 833285.
2019First prize for inventionFunctional wollastonite fibre wins the first prize for technical invention from the China Non-Metallic Minerals Industry Association.
2021Group standard publishedThe group standard for wollastonite mineral fibres, drafted with Huanqiu’s participation, is released.
TodaySupplied in Australia by PacificlinkPacificlink Minerals is the exclusive Australian distributor, quoting, importing and delivering from Melbourne.

A hand specimen of white wollastonite showing fans of needle-shaped crystals — Natural wollastonite, 15 cm across. Photo: Zbyněk Burival, Wikimedia Commons, CC BY-SA 4.0.

A wollastonite mine site set into a green hillside — The mine

The processing plant beside the water in Dalian — The plant

06 · Supply

Mine to your door, one accountable chain.

The manufacturer owns its mines and does its own processing and research. We are its exclusive distributor in Australia, so there is nobody in between.

1MinedOre from the manufacturer’s own wollastonite mines in north-east China.
2Processed and testedMilled and classified in Dalian under ISO 9001, 14001 and 45001 systems. Every batch is tested.
3ShippedShipped by sea from Dalian to Australia.
4DeliveredDelivered Australia-wide from Melbourne, with a certificate of analysis for the shipment.

1 tonne: Minimum order
Australia-wide: Delivery from Melbourne
Every shipment: Certificate of analysis

Drag the globe to turn it.

07 · Questions

Asked often.

Something else? Ask our team.

What is wollastonite?

Wollastonite is a naturally occurring calcium metasilicate, CaSiO₃. Its crystals grow as needles, so when it is milled carefully it behaves as a mineral fibre. It is white, chemically stable and has low water and oil absorption.

Is it safe? Does it contain asbestos?

Wollastonite is asbestos free, non-toxic and odourless. It is widely used as a replacement for asbestos in building boards and friction materials. A safety data sheet is supplied with your order.

Which grade do I need?

It depends mostly on aspect ratio and particle size. High L/D grades reinforce plastics, low L/D grades fill them, and the CY, GY and Y series are milled for ceramics, glazes and coatings. Tell us your application and we will recommend a grade.

What is the minimum order?

One tonne. Larger volumes can be shipped as full container loads direct from the manufacturer.

What paperwork comes with a shipment?

A certificate of analysis for the batch, and a safety data sheet. The manufacturer’s ISO certificates are shown on this page and can be verified with the China certification authority at cnca.gov.cn.

Can you supply a specification that is not listed?

Often, yes. Particle size, aspect ratio and surface treatment can be tailored by the manufacturer’s R&D centre. Ask us with your target specification.

08 · Talk to us

Tell us the application. We will find the grade.

Send your specification, target properties or current filler, and we will come back with a recommended grade and a quote.

Australian office

Pacificlink Minerals Pty. Ltd.
46 Melview Drive
Ringwood North, VIC 3134

+61 430 596 558

General:: info@plminerals.com.au
Sales and quotes:: sales@plminerals.com.au
Orders and product support:: support@plminerals.com.au

Mon – Fri: 9:00 am – 6:00 pm
Sat: 9:00 am – 2:00 pm

Manufacturing partner

Dalian Huanqiu Minerals Co., Ltd.
Stock code 833285

No. 159 Jinma Road, Development Area, Dalian, China 116600

Visit the manufacturer’s website

The needle-shapedmineral that makesmaterials stronger.

Look closer. It is all needles.

35 grades. One mineral.

Polymer grade

Eight industries. One reason: the fibre.

Polymers

Coatings

Ceramics & building materials

Metallurgy

Welding rod

Friction materials

Papermaking

Pigments