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Hard stone (EPUSTONE)

Industrially mined hard stone (commonly known as granite) has been used for several decades for measuring plates, straightness and angle standards, and machine bed components for measuring and high-precision production machinery. Hard stone is an isotropic, homogeneous material that follows Hooke’s law and can be analyzed using linear-elastic FEM modeling.

Product Description

Plutonic rock with a very dense and homogeneous microstructure
Most suitable materials: “Gabbro Impala” from South Africa and “Tarn” from France

Added value

Surface supports the use of air bearings
Outstanding thermal stability
High level of precision

Areas of application

Machine beds for all industries
Machine components (e.g. traveling columns, gantries, traverses)
Measuring machines
Measuring equipment
Suitable for individual pieces or special parts, and for small to medium quantities

Technical Specifications

	Impala	Black Galaxy	Ji Nan Black	Tarn
Origin	Südafrika	Indien	hina	Frankreich
	Bild	Bild	Bild	Bild
Density kg/dm³	2,90	2,90	3,00	2,60

Compressive strength N/mm²	300	190	250	180
Flexural strength N/mm²	20	19	26	24
Modulus of elasticity kN/mm²	90	44	70	46
Thermal expansion 10-6 K-1	6,5	6,0	5,0	6,0

Documents/Downloads

Brochure Hard stone EPUSTONE
With its EPUSTONE brand, RAMPF Machine Systems offers a comprehensive range of services for processing ...
Brochure
English
Download PDF (2 MB)
Broschüre Hartgestein EPUSTONE
Mit der Produktmarke EPUSTONE bietet RAMPF Machine Systems einen umfassenden Service rund um die Verarbeitung ...
Brochure
German
Download PDF (2 MB)

Hard stone (EPUSTONE)

Brochure Hard stone EPUSTONE

Broschüre Hartgestein EPUSTONE