Loading Port:China main port
Payment Terms:TT or LC
Min Order Qty:30 m.t.
Supply Capability:10000 m.t./month
Alloy Steel Cr40,Steel Material,40cr Steel Specification
Product information:
| Alloy Steel Cr40,Steel Material,40cr Steel Specification | |||||||||
| 1.Specifications of 40Cr Steel | |||||||||
| Round bar | Diameter(mm) | Length (mm) | |||||||
| 20~800 | 3000~5800 | ||||||||
| Plate | Thickness(mm) | Width (mm) | Length (mm) | ||||||
| Max:800 | 205~800 | 2000~4000 | |||||||
| The specification can be customized. | |||||||||
| 2.Chemical compositon(%) of 40Cr Steel | |||||||||
| Standard | C | Mn | Si | Cr | Mo | P | S | ||
| Number | Ni | ||||||||
| GB | 42CrMo | 0.38~0.45 | 0.50~0.8 | 0.17~0.37 | 0.9~1.2 | 0.15~0.25 | ≤0.035 | ≤0.035 | ≤0.3 |
| AISI | 4140 | 0.40~0.45 | 0.75~1.0 | 0.15~0.35 | 0.8~1.1 | 0.15~0.25 | ≤0.035 | ≤0.040 | |
| JIS | SCM440 | 0.38~0.43 | 0.60~0.9 | 0.15~0.35 | 0.9~1.2 | 0.15~0.30 | ≤0.030 | ≤0.030 | ≤0.25 |
| EN (DIN) | 1.7225 | 0.38~0.45 | 0.60~0.9 | ≤0.40 | 0.9~1.2 | 0.15~0.30 | ≤0.025 | ≤0.035 | |
| 4.Heat treatment of 40Cr Steel | |||||||||
| Forging:1100~900°C | |||||||||
| Normalization:860~880°C | |||||||||
| Subcritical annealing:680~720°C | |||||||||
| Isothermal annealing:830~900 670x3h°C | |||||||||
| Hardening:830~860 oil | |||||||||
| Tempering:550~650°C | |||||||||
| 5.Machanical Properties | |||||||||
| Tensile str. (N/mm2):1080 | |||||||||
| Yield point (N/mm2):930 | |||||||||
| Elongation (%):12 | |||||||||
| Contraction (%):45 | |||||||||
| Impack work (J/cm2):63 | |||||||||
| Hardness (HB):217 | |||||||||
| 5.Characteristic of 40Cr Steel | |||||||||
| Chromium molybdenum high tensile steel with yield strength of 550N/mm2. | |||||||||
| Chromium renders steel oil hardenable and increase hardenability. | |||||||||
| Weldability suffers with increasing chromium content. | |||||||||
| High temperature strength and high pressure hydrogenation properties are | |||||||||
| promoted by chromium and molybdenum. | |||||||||
| Molybdenum significantly reduces temper brittleness. | |||||||||
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40Cr steel, is a high quality alloy structural steel. The main components are 0.37-0.44 Si 0.17-0.37 Mn 0.50-0.80 Cr 0.80-1.10 C.
40Cr steel is used as a mechanical part and a variety of engineering components and contains one or more of the alloy elements of a certain amount of steel.This kind of steel is suitable for the heat treatment of metal, and the microstructure is uniform, bainite, or very fine pearlite after heat treatment.
So the 40Cr steel with wear consumption, chemical corrosion resistance, tensile strength, high elasticity, high pressure load, wear-resistant high strength, ceiling shock resistance, tear resistance, radiation resistance, high load and shock absorption, good performance.
Import of 40 Cr steel has better elastic recovery performance and better hardness and toughness, wear resistance, machinability is superior.
Used in metallurgy, mines, petroleum, automobile, building materials, sports, heavy machinery, large stamping equipment shock absorbing cushion, cushion block, a spring and a metal plate, pipe punching material mold, general machinery and equipment and other accessories cushion or damping effect is ideal material for mould spring.
