G332 Granite – Sesame Black Granite

• Type: Natural Granite
• Origin: Hebei Province, China
• Color: Medium to dark gray-black with fine, uniform white and light gray specks
• Texture: Fine-grained
• Common Name: Sesame Black Granite
• Commercial Use Name: G332

Visual Characteristics

• Texture: Fine-grained, compact, and uniform crystalline structure
• Pattern: Speckled with light gray and white mineral inclusions on a dark gray to black background
• Aesthetic Appeal: Minimalist, modern, and clean—suitable for large surface areas requiring consistency

Physical Properties

• Density (ASTM C97) .... 2.63 – 2.68 g/cm³ (2630–2680 kg/m³)
• Water Absorption (ASTM C97) .... 0.18% – 0.25%
• Compressive Strength (ASTM C170) .... 180 – 210 MPa (≈26,100 – 30,450 psi)
• Flexural Strength (ASTM C880) .... ~17 MPa (≈2,470 psi)
• Abrasion Resistance (ASTM C241) .... High – 38–42 Ha
• Slip Resistance (DIN 51130 / ASTM) .... R11–R13 (depending on finish)
• Hardness (Mohs Scale) .... 6.5 – 7
• Porosity .... Low (~0.2 – 0.4%)
• Weather Resistance .... Excellent (freeze-thaw proof)

Chemical Composition (% by weight)

• Silicon Dioxide (SiO₂) .... 68–74%
• Aluminum Oxide (Al₂O₃) .... 12–14%
• Iron Oxide (Fe₂O₃) .... 1.5–3%
• Calcium Oxide (CaO) .... <1.5%
• Magnesium Oxide (MgO) .... <1%
• Sodium + Potassium Oxides (Na₂O + K₂O) .... 6–8%
• Other Minerals .... Trace elements

Mineralogical Composition (% by weight)

• Quartz .... 25–30%
• Feldspar (Plagioclase & Orthoclase) .... 50–60%
• Biotite / Hornblende .... 10–15%
• Accessory Minerals .... <1%

Available Surface Finishes

• Polished .... Glossy surface, deepens color, easy to clean
• Honed .... Smooth matte, non-reflective, interior walls/floors
• Flamed .... Rough texture, slip-resistant, ideal for exteriors
• Bush-Hammered .... Coarse texture, anti-slip, public areas
• Leathered .... Soft tactile finish with movement
• Sandblasted .... Lightly textured and muted surface tones

Cutting Sizes (cm)

Slabs: 260 x 160 cm (±), in 2 cm / 3 cm thickness

Standard Tiles:

• 30 x 30
• 30 x 60
• 60 x 60
• 60 x 120
• Custom sizes on request

Recommended Applications

Exterior

• Paving & Landscaping: Curbstones, sidewalks, squares
• Facade Cladding: Dry or wet cladding systems

Interior

• Flooring: High-traffic areas like malls and airports
• Countertops & Vanities: In honed or polished finish

Memorials & Monuments: Tombstones and sculptures

Public Infrastructure: Stairs, benches, bridge edges

Maintenance Guidelines

• Daily Cleaning: Water and pH-neutral cleaner
• Sealing: Optional for polished interior use; recommended outdoors
• Resistance: UV, freeze-thaw, abrasion, and acid rain-resistant
• Lifecycle: Long-lasting with minimal care requirements

Summary

G332 Granite, known for its dense fine-grained structure, high mechanical strength, and minimal water absorption, is one of China's most popular and trusted construction stones. Its elegant neutral appearance, long-term durability, and multiple finish options make it highly versatile in both residential and public space applications.