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Hardness testing method for precision seamless steel tube
Nov 30, 2018

Precision seamless steel tube is a kind of high-precision steel pipe product. It has the advantages of no oxidation layer on the inner and outer walls, high pressure and no leakage, high precision, high smoothness, no deformation in cold bending, flaring, flattening without cracks, etc. Products that produce pneumatic or hydraulic components, such as cylinders or cylinders, use seamless tubes. The chemical composition of precision seamless steel tube is carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, chromium Cr.


For the analysis of the performance of precision seamless steel tubes, it is often necessary to pass the hardness test, and it is necessary to take into account its mechanical properties, which is related to the performance and quality of deformation, stamping, cutting and other processing using stainless steel as a raw material. Therefore, all seamless steel tubes are tested for mechanical properties. The mechanical properties test methods are mainly divided into two categories, one is tensile test and the other is hardness test.


Hardness testing is a relatively simple and easy to implement method, and it is convenient to convert hardness to strength, so more and more people only test the hardness of the material and test its strength less. Especially due to the continuous improvement of the hardness tester manufacturing technology and the innovation, the precision seamless steel tube can directly test the hardness.

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