Austral Coffee Brown Granite

About
Item Details
- Material Type:
- Granite
- Origin:
Brazil - Primary Color(s):
- Brown
- Recommended Usage:
- kitchen and bathroom countertop, wash basins, building stone, ornamental stone, stairs, interior wall and floor applications, mosaic, water-jet pattern, wall panels, table tops, balustrades, columns, fireplaces, luxury furniture
- Additional Names:
- Austral Coffee Granite, Brazil Austral Coffee Granite, Austral Coffee, Austral Coffee Brown Granite
- Finished Surface:
- Polished,Flamed,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Leathered,Water Jet,Chiseled,Pickling
Testing
- Water Absorption:
- less than 0.4%
- Density:
- 2690 - 2730 kg/m³
- Flexural Strength:
- 12 - 15 MPa
- Compressive Strength:
- 180 - 200 MPa
- Stone texture:
- a rich coffee-brown to dark brown background, accented with fine to medium grains of black, grey, and occasional lighter beige mineral speckles that create a warm, consistent, and earthy visual effect. Its appearance is generally uniform with subtle crystalline variation, giving it a natural depth without strong veining, making it suitable for both interior and exterior architectural applications. In texture and structure, it is a medium- to coarse-grained crystalline granite composed mainly of quartz, feldspar, and biotite, forming a dense interlocking mineral structure that provides high strength, durability, and low porosity
Description
Austral Coffee Brown Granite is a visually appealing natural stone, characterized by its rich coffee-brown to dark brown background. This granite is highlighted with fine to medium grains of black, grey, and occasional lighter beige mineral speckles, creating a warm, consistent, and earthy visual effect. Its uniform appearance with subtle crystalline variation provides a natural depth without strong veining, making it highly desirable for various architectural applications, both interior and exterior.
Physical and Mechanical Properties:
- Water Absorption: Low (generally less than 0.4%)
- Density: Approximately 2,690 - 2,730 kg/m³
- Flexural Strength: Typically between 12 - 15 MPa
- Compressive Strength: Around 180 - 200 MPa
- Hardness: Ranges from 6 to 7 on the Mohs scale
- Porosity: Low porosity, usually less than 1%
- Slip Resistance: Generally considered good, especially with textured finishes
Chemical and Mineral Composition (% by Weight):
- Quartz: 20-30%
- Feldspar (Orthoclase and Plagioclase): 55-65%
- Biotite: 5-10%
- Iron Oxides: Minor amounts
- Others (such as muscovite, amphiboles): Trace amounts
Usage:
- Interior Applications: Countertops, backsplashes, bathroom vanities, fireplace surrounds, flooring, staircases, and wall cladding.
- Exterior Applications: Building facades, paving stones, monuments, and landscaping features.
- Commercial Projects: Suitable for high-traffic areas due to its durability and strength.
Maintenance:
- Requires regular cleaning with mild soap and water.
- Sealing recommended every 1-2 years to enhance stain resistance.
- Avoid harsh acidic cleaners which can dull the surface over time.
Cutting Sizes (cm):
- Common slab sizes: 240cm x 120cm and larger.
- Thickness available: Typically 2cm or 3cm, but other custom sizes can be available upon request.
Available Common Surface Finish Options:
- Polished: Offers a glossy, reflective surface, enhancing the stone's natural colors and patterns.
- Honed: Provides a matte, smooth finish that is less reflective and good for flooring.
- Leathered: Adds texture and depth to the stone surface without a high gloss, offering a unique tactile experience.
- Flamed: A rough, textured finish ideal for slip-resistance, commonly used for outdoor applications.
Austral Coffee Brown Granite's high strength, low porosity, and diverse aesthetic appeal make it a versatile choice for both decorative and functional purposes in residential and commercial settings. Its easy maintenance and the wide range of finishes available further enhance its popularity.





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