This Part of EN 843 describes methods for determining the nominal flexural strength of advanced monolithic technical ceramic materials at ambient temperature. The available loading geometries are three- and four-point flexure, using rectangular section test pieces of two prescribed geometries: 20 mm support span (A) and 40 mm support span (B).
The test prescribes four categories of surface finish applied to the test pieces:
I: as-fired or annealed after machining;
II: machined using agreed grinding procedures and material removal rates;
III: standard finishing procedures:
III. 1: finishing by grinding;
III.2: finishing by lapping/polishing.
NOTE. The test may not give representative results if the mean linear intercept grain size exceeds 5 % of the thickness of the test piece, with the exception of single crystals.
DS/EN 843-1:1995 history
2007DS/EN 843-1:2007 Advanced technical ceramics - Mechanical properties of monolithic ceramics at room temperature - Part 1: Determination of flexural strength
1995DS/EN 843-1:1995 Advanced technical ceramics - Monolithic ceramics - Mechanical properties at room temperature - Part 1: Determination of flexural strength