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Hardness Test of Tinplate 1. What is tinplate? Tinplate is a sheet of iron with a layer of tin on the surface. It is not easy to rust and is also called tin-plated iron. It is made by dipping the iron sheet into molten liquid tin. Tin is a metal that is less active than iron. It is neither oxidized ... Read More
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Hardness Test Method for Seamless Steel Pipe The hardness test of stainless steel should take into account its mechanical properties, which is related to the performance and quality of deformation, stamping, cutting and other processing with stainless steel as raw material. Therefore, all seamless ... Read More
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Metal Coating Hardness Test Method Metal coatings mainly include electrodeposition layer, self-catalytic coating, spray coating (including explosion spray coating and plasma spray coating) and aluminum anodized coating layer. Generally, the coating is relatively thin, and its hardness is often ... Read More
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Limitations of Hardness Test 1) Hardness value alone cannot reflect the mechanical properties of different materials. For different materials, if their tensile strength (σb), yield strength (σs, or 00.2), elongation (ε), cross-sectional shrinkage (ψ) and impact toughness (ak) or impact energy (Ak) ... Read More
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Advantages of Hardness Test in Application 1) When testing hardness, the stress state of its loading mode is the softest (a>2), that is, the maximum shear stress is much greater than the maximum normal stress. Any metal material will undergo plastic deformation under this stress state, and the ... Read More
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Ductile Fracture of Metal Materials There are many ways for engineering materials to fail, and fracture is one of them. Other failure modes include deformation, wear, corrosion, etc. Fracture failure is the most dangerous and often causes casualties or major economic losses. Fracture is also divided ... Read More
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Hardness of Carbon Materials The hardness of carbon materials mainly depends on the type of material and the final heat treatment temperature. There are many measurement methods, including Mohs, Brinell, Rockwell and Shore hardness measurement methods. Artificial graphite: a product made from ... Read More
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Heat Treatment and Hardness The hardness of metal materials has a certain empirical relationship with their static strength and fatigue strength, and is related to the processing performance of metals such as cold formability, machinability and weldability. The hardness test does not damage the ... Read More
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Hardness Test of Welded Parts Welding is an indispensable common basic technology in the manufacturing industry. Since the formation process of the welded joint (weld) involves heat, stress and microstructural changes, it often becomes a weak link in the welded structure. Especially when there is a ... Read More
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Ceramic Material Hardness Test Method The hardness of ceramics is a relatively wide range, which varies due to its material composition, preparation process and microstructure. Generally speaking, the hardness of ceramics is between 6.5 and 9.0 on the Mohs hardness scale. Special ceramics such as ... Read More
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