Erichsen test has become a reference standard used to measure the formability of sheet metal. It is an international standard test used to evaluate the formability of a material when subjected to a force measured in units of force. The Erichsen test has been used for many years by many different countries around the world to evaluate the formability of sheet metal.
The Erichsen test involves measuring a sheet metal sample under a material testing machine. The force applied to the sample is measured and recorded using a Piezoelectric force transdicer. The force is gradually increased and the amount of plasticity of the material is measured by comparing the results to the reference point. The Erichsen test also measures the maximum elongation of the material before it starts to fracture.
In the United States, the American Society for Testing and Materials (ASTM) has published a reference standard for the Erichsen test, ASTM E-8. According to the ASTM standard, materials should be tested at a constant temperature of between 70 and 75 degrees Celsius. The ASTM standard requires that the sheet metal samples have a thickness between 0.5 and 1.5 mm and a hardness between 55 and 60 HRB.
In the United Kingdom, the British Standard BS EN 1349-1: 1997 references the Erichsen test and outlines a number of parameters for testing including the maximum contacting force and the maximum applied load. The British Standard is closely related to the American ASTM standards and specifies the same parameters for testing, including the temperature range and the material properties.
In Germany, the DIN 51818 standard references Erichsens test and outlines a number of parameters for testing. The DIN 51818 standard ensures that the material properties tested, such as tensile strength, yield strength and elongation, comply with the Erichsen test requirements. The DIN standard also outlines a range of sample sizes, thicknesses and material properties.
In China, the GB/T11018-2004 references the Erichsen test. The Chinese standard is closely aligned with the American and Euro-Imperial standards and also requires that material properties are tested within certain ranges, including hardness, tensile strength, yield strength and elongation.
In Japan, the JIS Z1209-1975 standard specifies the parameters for the Erichsen test. The Japanese standard outlines typical hardness and tensile strength values and also requires that material properties such as elongation are tested within certain ranges.
In conclusion, the Erichsen test is an international standard test that is used to evaluate the formability of sheet metals. The standards published by a number of countries, including America, China, the UK, Germany and Japan, outline the requirements for carrying out the Erichsen test and the parameters for measuring the performance of a material.
