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- pipe fitting standard
40CrMnNiMo8-6-4 Standard
40CrMnNiMo8-6-4 Standard flanges, Pipe Fitting, Steel Pipe, Heat Exchanger and Reducer, Gasket, Tee, Pipe Fitting, Tube Plate, have all specifications. With many yeas production experience, strict control ASTM 11Q chemical composition and ASTM 11Q mechanical properties.
Production specification
Data center describes many of the common steel models, we can not determine the company's warehouse has all types of steel products inventory or raw materials.
Angle bar: 1mm to 1300mm
Steel Pipe: 1 - 1300mm, also can be customed.
Pipe fitting Size: 1/8 inch - 80 inch (DN6 - DN2000)
Flange Size: DN6 - DN2000
Lenth: Any lenth based on the customer's requirement.
Steel Pipe: 1 - 1300mm, also can be customed.
Pipe fitting Size: 1/8 inch - 80 inch (DN6 - DN2000)
Flange Size: DN6 - DN2000
Lenth: Any lenth based on the customer's requirement.
1.2738 40CrMnNiMo8-6-4Chemical Composition :
C Si Mn P S Cr Mo Ni
Min. % 0.35 0.20 1.30 1.80 0.15 0.90
Max. % 0.45 0.40 1.60 0.030 0.030 2.10 0.25 1.20
Material Code : DIN ASTM JIS GOST
1.2738 P20+Ni - -
40CrMnNiMo8-6-4
Properties :
Plastic mould steel with excellent polishability properties, good wear resistance, contains 1 % Ni alloy in addition to 1.2311, because of the Ni addition there is no hardness decrease in the center of large sizes over 400 mm thickness, easy to machine, requiring no heat treatment, 280 - 325 HB hardened and tempered condition. Suitable for nitriding, welding, hard chrome plating, photo etching and flame hardening.
Applications : Plastic injection moulds with high mirror surface requirements, large injection and compression moulds for plastic proc-essing over 400 mm thickness such as bumpers, insturment panels, garbage containers, dashboards, waste bins, chairs, bottle crates, television cabinets etc., mould carrier frames for the plastic moulds, components for general mechanical engineering and tool manufacture, synthetic plastic moulding dies, pressure casting frames, hydro forming tools, struc-tural components, shafts, blow moulds, extrusion dies for thermoplastics.
Physical Properties : Density : at 20 °C 7,85 kg/dm 3
Thermal conductivity : at 20 °C 33,0 W/(m.K) Thermal expansion between : 20°Cand..°C, 10 -6 m/(mK)
100 °C 200 °C 300 °C 400 °C 500 °C
12.8 13.0 13.8 14.0 14.2
Heat Treatment :
Annealing : 710 - 730 °C
Hardness after annealing : Max. 240 HB
Stress relieving : Approx. 600 °C
Hot forming : 1050 - 850 °C
Hardening : 870 - 890 °C
Quenching media : Oil, Salt bath, Vacuum
Hardness after quenching : 50 - 54 HRC
Hardness after tempering :
100 °C 200 °C 300 °C 400 °C
52 HRC 51 HRC 49 HRC 46 HRC
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