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Posted by Admin on August, 26, 2026
B Grade Quartz is the cost-effective tier of processed quartz used wherever a formulation needs bulk, hardness and abrasion resistance from silica — not whiteness or optical purity. Here's where it's used across industries, plus Vietnam and Taiwan destination ports, indicative pricing and packing options for buyers sourcing from India.
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What Is B Grade Quartz?
B Grade Quartz is a lower-purity, lower-whiteness tier of processed quartz — typically 90% to 97% SiO2, with higher iron oxide content and less tightly controlled particle consistency than premium ceramic, glass or electronics grades. It comes from the same mining and crushing process as higher grades, but skips the intensive beneficiation and purification steps that push a batch up to white-body or optical-grade specification.
That's not a downside for filler use — it's the point. A filler's job is to add bulk, hardness and abrasion resistance to a resin, rubber, plastic or cementitious system. None of that depends on the material being bright white or exceptionally low in iron, which is precisely why B Grade Quartz is the economically sensible choice across a wide range of industries that need silica's physical properties without paying for purity they'll never use.
Why B Grade Works for Filler Applications
- Color doesn't matter once it's bound into a matrix: resin, rubber, plastic and cement all mask the natural off-white to grey tone of B Grade material.
- Hardness and abrasion resistance are unaffected by purity tier: B Grade quartz is just as hard as A Grade — SiO2's mechanical properties don't change meaningfully between 92% and 99.5% purity.
- Cost per ton is meaningfully lower: skipping iron-removal and fine purification steps reduces processing cost, which passes through to a lower filler price — the main reason formulators specify it.
- Available at higher volumes: because it doesn't require the tightest beneficiation pass, B Grade output is generally more abundant than premium-grade material from the same mine.
Typical Specification Range
| PARAMETER | TYPICAL B GRADE RANGE | COMPARISON TO PREMIUM GRADE |
|---|---|---|
| SiO2 | 90% - 97% | Premium grades run 98.5% - 99.6% |
| Fe2O3 | 0.1% - 0.5% | Premium low-iron grades run 0.02% - 0.05% |
| Whiteness (GE) | Off-white to grey, not tightly specified | Premium grades target 85-93 GE |
| Mesh / Particle Size | Mixed or coarser grind, less tightly screened | Premium grades are precisely mesh-controlled |
| Moisture | Under 0.5% (less strictly controlled) | Premium grades typically under 0.1% |
Industries Using B Grade Quartz as a Filler
Engineered / Artificial Quartz Stone
One of the largest-volume uses: B Grade quartz aggregate bound with resin to manufacture artificial quartz slabs for countertops and surfaces, where the resin and pigment control final appearance, not the raw mineral's color.
Plastics & PVC Compounding
Used as a bulk filler in PVC pipes, profiles and compounded plastics to reduce resin content and add rigidity, at a cost point that makes sense for high-volume extrusion.
Rubber Goods
Lower-cost filler in general rubber products (non-tire) where reinforcement requirements are less demanding than in tire compounding.
Paints & Coatings
Extender in primers, undercoats and lower-cost paint lines, adding bulk and texture without needing premium whiteness since pigments carry the color.
Adhesives, Sealants & Putty
Bulk filler in construction adhesives, caulks and wall/wood putty formulations where cost efficiency matters more than optical properties.
Construction Chemicals
Used in tile adhesives, wall putty, mortars, grouts and self-leveling compounds as a cost-effective bulking filler alongside cement and polymer binders.
Epoxy & Resin Flooring
Filler component in industrial epoxy flooring systems, adding bulk and abrasion resistance to the cured resin layer.
Foundry Sand Blends
Used in mould and core sand mixtures for metal casting, where consistent grain hardness matters more than color purity.
Synthetic Turf Infill
Quartz-based infill material used beneath synthetic grass fibers in sports and landscaping turf systems.
Roofing Granules
Used as a base or blending component in mineral granules applied to asphalt roofing shingles.
Soap & Scouring Products
Fine B Grade quartz used as a mild abrasive component in scouring soaps, hand cleaners and industrial scrub formulations.
General Ceramic Frit & Filler
Lower-cost silica source in non-white-body ceramic formulations and general-purpose frit where iron tolerance is higher.
Destination Ports in Vietnam
Cai Mep-Thi Vai / Cat Lai (Ho Chi Minh City area)
Main gateway for southern Vietnam's plastics, construction chemical and engineered stone manufacturing belt, with deep-water berths supporting large bulk shipments.
Hai Phong Port
Vietnam's principal northern port serving Hanoi-area manufacturers, with expanding capacity at the Lach Huyen terminal.
Da Nang Port
Serves central Vietnam buyers, connected via the East-West Economic Corridor to Laos and Thailand.
Destination Ports in Taiwan
Kaohsiung Port
Taiwan's largest harbor and primary hub for bulk and container cargo, serving southern Taiwan's plastics and construction materials industries.
Taichung Port
Alternative routing for buyers based in central Taiwan.
Keelung Port
Serves northern Taiwan and the Taipei metropolitan area.
Indicative FOB Pricing
| GRADE | TYPICAL SPECIFICATION | INDICATIVE FOB RANGE (USD/MT) |
|---|---|---|
| B Grade — Coarse Filler | 90-94% SiO2, mixed mesh | $20 - $35 |
| B Grade — Standard Filler | 94-97% SiO2, 100-200 mesh | $28 - $45 |
| B Grade — Engineered Stone Aggregate | 93-97% SiO2, sized/graded aggregate | $25 - $50 |
B Grade material is priced meaningfully below premium ceramic or glass grades, which is the core commercial reason formulators choose it for filler roles. Freight to Vietnam and Taiwan adds to this FOB base, and buyers typically request CIF or CFR quotes for total landed cost comparison.
Packing Options for Export
1-Ton Jumbo Bags
The most common format for B Grade filler buyers, balancing handling ease with low per-ton packaging cost for high-volume orders.
50 kg PP/HDPE Bags
Standard bagged format for mid-volume buyers in construction chemicals, plastics and paints.
25 kg Bags
Used for smaller trial orders or buyers without bulk handling infrastructure.
Bulk Vessel Loading
For very high-volume, recurring buyers such as engineered stone manufacturers, loose bulk loading reduces cost further versus bagged cargo.
Frequently Asked Questions
What is B Grade Quartz?
A lower-purity, lower-whiteness tier of processed quartz, typically 90-97% SiO2 with higher iron content, priced below premium ceramic or glass grades because it skips intensive purification steps.
Which industries use B Grade Quartz as a filler?
Engineered/artificial quartz stone, plastics and PVC compounding, rubber goods, paints and coatings, adhesives and sealants, construction chemicals, epoxy flooring, foundry sand, synthetic turf infill, roofing granules and soap/scouring products.
Why is B Grade used instead of higher-purity grades in fillers?
Filler applications don't need whiteness or trace-purity control since the material is bound into a resin, rubber, plastic or cementitious matrix — so the lower cost of B Grade is a straightforward advantage.
Which ports in Vietnam and Taiwan accept shipments?
Vietnam: Cai Mep-Thi Vai/Cat Lai (south), Hai Phong (north), Da Nang (central). Taiwan: Kaohsiung (primary), Taichung (central), Keelung (north).
How is B Grade Quartz packed for export?
25 kg or 50 kg bags on pallets, or 1-ton jumbo bags for bulk buyers, loaded into standard containers, with bulk vessel loading available for very high-volume orders.
Sourcing Filler-Grade Quartz for Your Formulation?
Share your target application and volume, and we'll recommend the right B Grade specification with pricing and a sample for shipment to Vietnam or Taiwan.
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