Technical Product Specification
High-PurityIndustrialSilicaSandSpecifications(>99%SiO₂)
Mined and refined in Bhuj, Kutch (Gujarat). Engineered with sub-angular grains, ultra-low clay fines (<0.08%), and calibrated AFS sieve distribution.
Important Specification & Custom Recipe Notice:The figures and sieve tables below illustrate our standard production benchmarks. Every consignment is custom-processed, washed, rotary-dried, and screen-classified strictly according to the specific chemical tolerances, particle size distribution (AFS fineness number), and packaging requirements mandated by each client's individual plant process. We do not restrict supply to fixed grades — custom sieve distributions are calibrated upon request.
Chemical Assay Standards
TypicalChemicalAnalysis
Silicon Dioxide (SiO₂)99.10% – 99.45%
Iron Oxide (Fe₂O₃)< 0.035% – 0.045%
Aluminium Oxide (Al₂O₃)< 0.35%
Titanium Dioxide (TiO₂)< 0.02%
Loss on Ignition (LOI)< 0.20% – 0.25%
Free Moisture Content0.00% (Rotary Kiln Dried)
Physical & Thermal Properties
PhysicalPerformanceStandards
Refractoriness / Fusion Point> 1730°C (3146°F)
Grain Shape / MorphologySub-Angular to Rounded
Specific Gravity2.65 g/cm³
Mohs Hardness7.0
AFS Clay Content< 0.08% (Ultra Clean)
pH Value in Water6.8 – 7.2 (Neutral)
Interactive Tool
Grade Recommender & Specification Comparison
Select your manufacturing process or casting type to instantly view the recommended AFS sieve grading and chemical assay.
Step 1: Select Your Manufacturing Process / Foundry Type
Step 2: Recommended Silica Sand Grade & Assay
Medium / High Strength✓ Zero Moisture (0.00%)
Foundry Grade FD-Medium
Target Metal / Application: Spheroidal Graphite (SG) & Ductile Iron
Moulding / Melting System: High-Pressure Automated Green Sand Lines
Technical Rationale:Balanced grain geometry maximizes green compression strength while reducing bentonite clay and resin binder consumption by up to 15%.
Target Grade Parameters
Grain Fineness (AFS):AFS 35 – 40
Mesh Range (ASTM):30 / 60 Mesh (0.25 – 0.60 mm)
Silica Purity (SiO₂):> 99.15%
Iron Oxide (Fe₂O₃):< 0.04%
AFS Active Clay:< 0.06%
Free Lab Evaluation:1–2 KG Dispatched Free
⚡ Custom 3-screen / 4-screen sieve fractions calibrated on plant order.
Standard AFS Sieve Gradation Benchmarks
Download standard specification sheets or request a tailored sieve mesh distribution for your core shooter or furnace batch.
| Grade Classification | AFS Number | ASTM Mesh | SiO₂ % | Clay % | Target Application | Spec Sheet |
|---|---|---|---|---|---|---|
| Foundry Grade FD-Coarse | AFS 25 - 28 | 20 / 40 Mesh | > 99.10% | 0.05% | Heavy Steel Castings, Large Grey Iron Moulds, Resin Coated Sand | PDF Spec |
| Foundry Grade FD-Medium | AFS 35 - 40 | 30 / 60 Mesh | > 99.15% | 0.06% | Ductile Iron, Automotive Castings, Precision Valve Bodies | PDF Spec |
| Foundry & Glass Standard | AFS 40 - 45 | 40 / 70 Mesh | > 99.20% | 0.05% | Non-Ferrous Alloys, Glass Containers, Shell Moulding | PDF Spec |
| Foundry Fine & Specialty | AFS 50 - 55 | 50 / 100 Mesh | > 99.25% | 0.07% | Ultra-Smooth Castings, Core Shooters, Specialty Refractory Mortars | PDF Spec |
| Micro Fine Quartz | AFS 60 - 65 | 60 / 140 Mesh | > 99.30% | 0.08% | Ceramic Glazes, Investment Casting, Filler Applications | PDF Spec |
Complimentary Lab Sample Program
Need a 1–2 KG Sample Batch for Internal Testing?
We dispatch a free 1–2 KG sample directly to your plant address. Shipped across India with coastal vessel (20ft ship containers up to 28 MT) and rail freight coordination for regular orders.