Heat-resistant steel means one type of steel possesses inoxidizability, enough high-temperature strength and excellent heat- resistant quality under high temperature. Heat resistant steel is divided into oxidation resistant steel and refractory steel according to its performance. Further into Austenitic heat-resistant steel, Martensitic heat-resistant steel, Ferritic heat-resistant steel and Pearlitic heat-resistant steel according to its normalizing.
Superalloy is a kind of metal material that operating under high temperature above 600℃ and certain stress condition for a long time. It holds combination properties, such as exellent high temperature strength, antioxidation and heat resist- ance corrosion property, favourable fatigue property, fracture toughness property. which has become irreplaceable key material of hot end parts for military and civilian gas turbine engine.
Valve steel is a subbranch of heat resistant steels, which is a special material for processing the vent valve & intake valve of combustion engines. This steel material is always under the high temperature 450 ~ 900℃ and also in the operating conditions of 3000~7000kPa explosion pressure.
High speed steel (abbreviated HSS), a sub-branch of tool steels, commonly used in tool bits and cutting tools. HSS is a complex steel with carbon content 0.70~1.65% generally, and alloying elements composition can reach totally 10~25%. HSS is ferrous based alloys of the Fe–C–X multicomponent system where X represents a group of alloying elements comprising mainly Cr, W or Mo, V, and Co.
Structural steel means one type of steel conforms to specific strength and forming property grade that is expressed by interruption elongation during the tensile test. Structural steels are normally used to load bearing, and steel strength is a key design standard in those purposes.
Spring steel is specialized in producing the spring and elastic components due to its elasticity under the condition of quenching and tempering. The elasticity of steel depends on its capacity of elastic deformation. This allows objects made of spring steel to return to their original shape despite significant bending or twisting occurs.
Bearing steel is a type of steel used in the field of fabricating the ball, pin roller, sleeve for antifriction bearing. and also measuring implements, cold-punching die, lead screw and precision components of diesel engine oil pump. Bearing steel is divided into high-carbon chromium bearing steel, carburizing bearing steel, stainless bearing steel, high temperature bearing steel, medium-carbon bearing steel.
Cast iron is generic terms of alloy consist of iron, carbon and silicon. Carbon content exceeds the eutectic temperature, can remain the volume in the austenitic solid solution Cast iron is iron-carbon alloy with carbon content up to 2%.
Welding material is generally called consumable material while welding. Such as welding rod, welding wire, metal powder, soldering flux, gas and so on. With the rapid development of welding industry, mainly divided into argon welding, Co2 welding, oxygen cutting, electric welding.