Baosteel high hardness 60Si2CrA carbon spring steel spring steel spring steel spring steel bomb ..

Spring steel refers to steel due to the elasticity in the quenched and tempered condition, and specifically for the manufacture of springs and elastic components. Spring steel depends on its ability to elastically deform, i.e., within the prescribed range, the ability to withstand a certain elastic deformation so that the load does not occur in the permanent deformation after the load is removed. ??? Spring steel should have excellent properties such as mechanical properties (especially elastic limit, ultimate strength, yield ratio), ballistic performance reduction (ie anti decreased elasticity properties, also known as sag resistance), fatigue properties, hardenability, physical and chemical properties (heat resistance, low temperature, oxidation, corrosion, etc.). To meet these performance requirements, spring steel with excellent metallurgical quality (high purity and uniformity), good surface quality (strict control of surface defects and decarburization), the exact shape and size. ??? 1 ??? carbon content of carbon spring steel carbon spring steel (mass fraction) is generally 0.62% to 0.90%. In accordance with its manganese content is divided into general manganese content (mass fraction)? (0.50% - 0.80%) as 65,70,85 and high manganese content (mass number)? (0.90 to 1.20%), as 65Mn categories. ??? 2 ??? alloy spring steel alloy spring steel is based on the carbon steel, through appropriate one or more alloying elements added to improve the mechanical properties of steel, hardenability and other properties to meet manufacturing the desired properties of various spring steel. ??? Alloy spring steel basic composition series, silico-manganese spring steel, chrome silicon spring steel, chrome-manganese spring steel, chrome vanadium spring steel, tungsten chrome vanadium spring steel. On the basis of these series, there are a number of brands in order to improve certain aspects of their performance and added molybdenum, vanadium or boron and other alloying elements. ? In addition, from other types of steel, such as high-quality carbon structural steel, carbon tool steel, high speed tool steel, stainless steel, select some grades as spring steel. ? Spring steel is due to the elasticity in the quenched and tempered condition, and dedicated to the manufacture of steel springs and elastic components. Jia Wang elasticity of steel depends on its ability to elastic deformation, that is, within the specified range, the ability to withstand a certain elastic deformation so that the load does not appear permanent deformation after load removed. Spring steel should have excellent properties such as mechanical properties (especially elastic limit, ultimate strength, yield ratio), ballistic performance reduction (ie anti decreased elasticity properties, also known as sag resistance), fatigue properties, hardenability physical and chemical properties (heat resistance, low temperature, oxidation, corrosion, etc.). To meet these performance requirements, - Jia Wang spring steel with excellent metallurgical quality (high purity and uniformity), good surface quality (strict control of surface defects and decarburization), the exact shape and size. ?? ?? 60CrMnA spring steel high strength, ductility and toughness, good hardenability, heat sensitivity is lower than steel, higher than silico-manganese steel, silico-manganese steel decarburization tendency than small, temper brittleness. ?? ?? 60CrMnA use for a vehicle, making heavy load on the tractor industry, large stress larger diameter coil spring leaf springs and the chemical composition ?? C ?? C:?? 0.56 ~ 0.64 Si Si??: ? 0.17 to 0.37 Mn Mn:? 0.70 ~ 1.00 Sulfur S:??? ≤0.030 phosphorus P:??? ≤0.030 chromium Cr:?? 0.70 ~ 1.00 Ni-Ni:?? ≤0.35 copper Cu:?? ≤0.25 [ 2] ?? ?? Mechanical Properties Tensile strength σb (MPa):??? ≥1225 (125) Conditions yield strength σ0.2 (MPa):??? ≥1078 (110) Elongation δ5 (%?? ): ≥9 (for reference) section shrinkage ψ (%): ≥20 Hardness: hot, ≤321HB; Cold Drawn + heat treatment, ≤321HB [3] ?? Heat Specifications:?????? quenching 830 ~ 860 ℃, oil cooling;? tempering 460 ~ 520 ℃. ? Delivery status: hot-rolled steel to heat treatment or heat treatment delivery, cold-drawn steel to heat treatment delivery ??? ?? chemical composition Carbon C:?? 0.56 ~ 0.64 Si Si:? 0.17 ~ 0.37 Mn Mn? : 0.70 to 1.00 sulfur S:?? ≤0.030 phosphorus P:?? ≤0.030 chromium Cr:? 0.70 ~ 1.00 Ni-Ni:? ≤0.35 copper Cu:? ≤0.25 ?? ?? mechanical properties of tensile strength σb (?? MPa): ≥1225 (125) Conditions yield strength σ0.2 (MPa):?? ≥1078 (110) Elongation δ5 (%):?? ≥9 (for reference) section shrinkage ψ (%)?? ?: ≥20 Hardness: hot, ≤321HB; Cold Drawn + heat treatment, ≤321HB ?? ?? Heat treatment and microstructure Heat Treatment Specification: quenching 830 ~ 860 ℃, oil cooling; tempering 460 ~ 520 ℃?. Delivery status: hot-rolled steel to heat treatment or heat treatment delivery, cold-drawn steel to heat treatment delivery ???? spring steel concept and application range. . . ?? Spring steel mainly used in locomotives, vehicles, cars, tractors, airplanes and other various coil springs and leaf springs. ?? ???? Spring steel should have excellent properties such as mechanical properties (especially elastic limit, ultimate strength, yield ratio), ?? Save ballistic performance (ie anti decreased elasticity properties, also known as sag resistance ), fatigue properties, hardenability, physical and chemical properties ?? energy (heat resistance, low temperature, oxidation, corrosion, etc.). ~ ~ ~ ~ ~ In order to meet these performance requirements, spring steel with excellent metallurgical quality (high purity and uniformity), good ?? good surface quality (strict control of surface defects and decarburization), the exact shape and size . The above information is provided by the Dongguan City, Chiayi contact Wang Metal Materials Co.; Lin Tel 13712969796; 0769-81629576 or 81629676