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7.0. GENERAL

7.1.1 Scope

This specification describes the technical properties of RECEMAT metal foam types Ni, NC and NCX.

7.1.2 Description

RECEMAT is a three dimensional skeletal metal structure produced by coating a reticulated polyurethane foam matrix with metal. The structure is then heat treated, resulting in the removal of the polyurethane from the structure.

7.1.3 Materials

The RECEMAT consists essentially of Nickel or Nickel-Chromium and is made according to the manufacturers standard.

7.1.4 Grades

The pore size of the RECEMAT is normally indicated by the pore range number, also called grade number and relates to the approximate number of pores per linear inch (25.4 mm) in the original foam.

7.1.5 Surface Area

The following table shows the grade number in relation to the range of pores and the estimated average pore diameter.

7.2. TECHNICAL PROPERTIES

7.2.1 Composition

The basic chemical composition of RECEMAT is as follows:

Fig. 1: Relative chromium content % of RECEMAT versus the mean pore size in mm.

7.2.2 Dimensional tolerances

7.2.2.1 Thickness tolerance

Thickness with smaller tolerance band available:
presicion rolled: nominal thickness ± 0.25 mm
against 5% price increase.

7.2.2.2 Sheet length and width tolerance

Note:

The cutting of metal foam by shearing produces rounded off edges, while the cutting with a saw results in right angled edges.

7.2.3 Density

The density indication given below relates to RECEMAT in standard quality.
Densities outside these limits may be required for special applications.

The above densities have been derived from the standard plate sizes and thickness, according to:

Density = Mass x 10⁶ / (length x width x thickness)

In which: mass is expressed in kg; width, length and thickness are expressed in mm.

The density of compressed metal foam can be easily computed by using the compressed thickness instead of the nominal thickness in the above formula.