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45Mn2 steel plate

45Mn2 steel plate

 

45Mn2 alloy steel
Standard: GB / T 3077-1999

 

Size:
Thickness 0.5mm-500mm
Width:1m-3m
Length 3m-6m or as requirement

 

 


Main Features
The carbon steel is quenched and tempered steel, strength, wear resistance and hardenability were relatively high, the critical quenching in oil diameter 10 ~ 25mm, the critical quenching diameter in water of 22 ~ 45. After quenched with good mechanical properties, machinability is still good; but when overheating heat sensitivity and tendency to temper brittleness, water quenching easy to crack, white spot sensitive, and cold welding of plastic deformation and low defects. 

 

Application examples
The steel generally used in the quenched state can also be used in the normalizing condition, suitable for manufacture of high stress and wear conditions in the work of the parts. When the workpiece diameter is less than 60mm, the performance and 40Cr steel quite. Tractors and general machinery in the automotive manufacturing, for the manufacture of universal joint shaft, axles, connecting rod cap, friction plate, worm gears, gear shafts, axle tram and steam locomotive, carriage shafts, heavy duty racks, and cold-drawn state bolts and nuts, etc.


Chemical Composition (mass fraction) (%) 
C: 0.42 ~ 0.49 
Si: 0.17 ~ 0.37 
Mn: 1.40 ~ 1.80 
S: to allow the residual content of max 0.35 
P: to allow the residual content of max 0.35 
Cr: max 0.30 to allow the residual content
Ni: max 0.30 to allow the residual content
Cu: max 0.30 to allow the residual content
   
45Mn2 


 Mechanical properties

Sample blank size (mm): 25
Heat treatment:
The first quenching temperature centigrade: 840; cooling agent: oil
The second quenching temperature : -
Tempering heating temperature centigrade 550; Coolant: water, oil
Tensile strength (MPa): min 885
Yield point ( MPa): min 735
Elongation (%): min 10
Section shrinkage (%): min 45
Impact energy (Aku2 / J): min47
Brinell hardness (HBS100/3000) (annealing or high temperature tempered condition): max 217

 

 

Date:2013/3/10
Last:50Mn2 steel plate
Next:35Mn2 Alloy Steel Plate

 

 

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