Glossary

Definitions

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Ablation

In physics, ablation means the wear of material by thermo-mechanical loads. Ablative materials are capable of delaying the heat flow. This is accomplished by including components that form a kind of heat shield as soon as the material is exposed to heat from convection or radiation.

Abrasion

Abrasion is a loss of material on the surface caused by relative movement.

Coefficient of linear expansion

The thermal coefficient of expansion indicates the relative dimensional change of a material per degree of temperature change. This is caused by heat expansion. The Parameters given in our technical specifications on our product pages are the expansion in x- and y- direction (length and width). Further Details could be provided on request!

Composites

Composites are combinations of several materials into one.

Compressive strength

Breakage value of a material sample when exposed to pressure. The breakage value is indicated in N/mm². Compressive strength is determined by exposing a material to pressure. Compressive strength is usually expressed as a force per area (N/mm²). Tested according to EN ISO 604.

Contact pressure

Contact pressure occurs when two solids are pressed together with a force. The distribution of force over the contact surface of individual bodies is taken into consideration. The unit of contact pressure is Pascal
(1 pascal = 1 N/m²; 1 megapascal = 1 N/mm²)

Density

Density describes the ratio of mass and volume in a material. Density is usually measured in grams per cubic centimetre. The formula is p = m/v (p = density; m = mass; v = volume)

Dimensional and positional tolerance

General values for dimensional and positional tolerance (ISO 2768-2) apply to all dimensional and positional tolerances not specified in a drawing. They are indicated above the written field in the so-called drawing header. They are used as tolerances for the finished shape of the workpiece in the context of the assembly or function.

Dimensional stability

The degree to which a material maintains its original dimensions when subjected to changes in temperature and humidity.

DIN 52 612

This is the German standard for testing the heat conductivity of a material.

DIN EN ISO 9001

This is a quality management standard to define and describe the requirements to a company's management system.

DIN ISO 2768

This standard deals with general manufacturing tolerances for the manufacture of individual components.

Elastomer

In contrast with thermosets, elastomers are plastics capable of elastic deformation. Elastomers can be deformed by tension or pressure. They return to their original shape after the stress ceases.

Fibre cement

Fibre cement is a composite material of cement and fibres with high tensile strength. The main characteristics of fibre cement are durability, flame resistance, and comparatively low weight.

Flatness

Flatness is a value for the dimensional tolerance of a ground or machined component. The limits of tolerance are formed by two virtual planes that are parallel with the generated surface of the component.

Flexural strength

In industrial mechanics, flexural strength is a value for the tension in a component under flexural stress. Exceeding this value causes the component to fail by breaking.

FP-BRA-Coating

Protective coating that can be applied primarily to our organic insulation materials. This coating protects our materials against oils and other media to prolong the service life.

GFRP

GFRP is the acronym for glass-fibre reinforced plastic. Both thermosets and thermoplastics are eligible substrates. The plastic is usually laminated from several types of resins and glass fibres.

Impact resistance

Impact resistance is the ability of a material to absorb shocks and impacts without breaking. Impact resistance is indicated as the ratio between the work of impact and the sample cross-section. The unit for impact resistance is Kilojoule/m².

Inorganic insulation materials

Inorganic materials are materials that do not contain carbohydrates, such as metals and steels. In the field of insulation materials, we consider a material inorganic if it does not have an organic matrix. These materials are able to withstand considerably higher thermal loads, but have less mechanical strength.

Mica

Mica is a class of silicate materials. Micas are among the most common rock-forming minerals and are important components of many magmatic (such as granite, diorite, pegmatite) and metamorphic (mica schist, gneiss) rock types.

Modulus of elasticity

The modulus of elasticity (Young modulus) is a characteristic in materials technology. It describes the relationship between tension and expansion in the deformation of a solid body with linear elastic behaviour.

Organic Insulation Material

In the field of insulation materials, we consider a material organic if it has an organic matrix. These materials are able to withstand thermal loads of up to 350 °C and usually have a much higher mechanical strength than inorganic insulation materials.

Parallelism / plane parallelism

Two flat surfaces that are parallel to each other are called plane parallel. This can also be applied to an arrangement of points in a plane. These points are flush with one another.

Prepreg

Prepreg is short for “pre-impregnated fibres”. Prepregs are semi-finished materials pre-impregnated with reactive resins that are cured under the influence of temperature and pressure to form components.

REACH

REACH is for “Registration, Evaluation, Authorisation and Restriction of Chemicals”. Regulation (EC) no. 1907/2006 (REACH Regulation) is a European chemicals regulation that came into force on 01 June, 2007. The REACH system is based on the responsibility of businesses. According to the “no data, no market” principle, chemical substances may only be introduced to the market after they have been registered.

Roving

A roving is a bundle of parallel filaments (fibres of unlimited length) that is primarily used in the manufacture of composite fibre plastics or fibre-reinforced plastics.

Sliding friction

Sliding friction occurs on the contact surfaces between bodies that move relative to each other. The sliding friction is usually less than the static friction for the same normal force.

Standard plate

A standard plate is the maximum sized, unmachined cutting of a product.

Tensile strength

Tensile strength is the maximum mechanical tension that a material can withstand before breaking. It is calculated from the maximum tensile force before breaking relative to the original cross-section of the sample. The dimension of tensile strength is force per area. Commonly used units are Newton/mm² or megapascal.

Thermal conductivity

The coefficient of thermal conductivity, or heat conductivity, is a material characteristic used to calculate heat flow based on conductance. Heat conductivity is the amount of energy passing through a 1 meter thick layer of material with an area of 1 m² in 1 second when the temperature difference is 1 Kelvin.

Thermoplastic

Thermoplastics, also called plastomers, are plastics that can be deformed while in a certain temperature range. The process is reversible, which means that it can be repeated indefinitely through cooling and re-heating to the molten state, unless overheating causes the material to thermally decompose.

Thermoset

Thermosets are plastics that can no longer be deformed after curing. Glassy polymers are the main component of thermosets.