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.Heat treatment of 40cr steel
Forging:1100~900â°c
Normalization:860~880â°c
Subcritical annealing:680~720â°c
Isothermal annealing:830~900 670x3hâ°c
Hardening:830~860 oil
Tempering:550~650â°c
3.Machanical properties
Tensile str. (n/mm2):1080
Yield point (n/mm2):930
Elongation (%):12
Contraction (%):45
Impack work (j/cm2):63
Hardness (hb):217
4.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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Buyer: Hardwood and softwood logs usa and canada
souther yellow pine logs, eastern white pine logs
walnut logs, red oak logs, cherry logs, african teak logs & various other specie
lumber sd and kd, syp lumber , ewp lumber
lumber : ashwood ,redoak, white oak ,walnut sawn timber hardwood : red merantiwood malaysia
european hardwood, beechwood,ashwood,red oak ,white oak , whitewood : ad ast, kd ,kd s4s white wood and wood pallets
austrian whitewood, bosnian whitewood, romanian whitewood, usa pine wood brazil whitewood
plywood :china ,malaysia,indonesia ,vietnam commercial plywood, veneer plywood ,melamine plywood, hpl plywood
mdf: china ,thailand ,malaysia
plain mdf ,melamine mdf , veneer mdf , high glossy mdf , film faced plywood (marine plywood): china,india,vietnam
shuttering plywood
solid chipboard, particular board and osb board
doors and frames
