Hardness Testing Method of Strip Steel Strip Steel Introduction: Strip steel is a narrow and long steel plate produced to meet the needs of different industrial sectors. Its width is generally within 300mm, but with the development of the economy, the width is no longer limited. Strip steel is ... Read More

Hardness Test of Welded Pipe Welded pipe is made of steel plate or steel strip after bending and then welding. According to the form of weld seam, it is divided into straight seam welded pipe and spiral welded pipe. According to the purpose, it is divided into general welded pipe, galvanized welded ... Read More

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

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

The Minimal Cabinet of Salt Spray Test Chamber According to ISO 9227:2022 Corrosion tests in artificial atmospheres — Salt spray tests The cabinet shall have a capacity of not less than 0.4m3 since, with smaller volumes, difficulties have been experienced in ensuring an even distribution of spray. ... Read More

What is Cyclic Corrosion Testing (CCT)? Cyclic Corrosion Testing (CCT) has evolved in recent years, largely within the automotive industry, as a way of accelerating real-world corrosion failures, under laboratory controlled conditions. As the name implies, the test comprises different climates which ... Read More

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

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

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

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