Meaning
International testing protocol establishes the standard procedure for measuring the transverse rupture strength of cemented carbides and hardmetals. Adhering to iso 3327 ensures that manufacturers produce materials with consistent resistance to mechanical failure under bending loads. The standard specifies the geometry of the test pieces and the distance between the support points.
Results obtained through this method allow for the direct comparison of different material grades across the global market.
Testing Geometry
Specific dimensions for the rectangular or cylindrical specimens are mandated to ensure data repeatability. When applying iso 3327, the specimen is placed across two support rollers and loaded until fracture.
Strength Calculation
Measured force at the point of failure is used to derive the maximum stress the material can withstand. The iso 3327 value is expressed in megapascals and represents the outer fiber stress at the moment of breakage. Porosity or inclusions within the hardmetal will lower this figure.
Engineers rely on this data to design tools that must survive high pressure and impact.
Material Comparison
Consistency in the application of the test enables a benchmark for quality control in the powder metallurgy industry. Data from iso 3327 helps buyers verify that a batch of carbide meets the required specifications for wear resistance and toughness. Variations in the cobalt binder content often lead to different rupture strengths.
Manufacturers provide these values as a standard part of the technical datasheet. This comparison guides the procurement of materials for demanding industrial environments.
