35Mn2 alloy steel Plate

Standard: GB / T 3077-1999

Main Features
Cold deformation of the plastic medium, cutting resistance is acceptable but poor welding. Compared with the 30Mn2 steel, high carbon content, higher strength, abrasion resistance and hardenability, quenching in oil critical diameter of 7.5 ~ 20mm, but the plastic is slightly lower, and the sensitivity of white spots overheating and temper brittleness and tendency to crack easily formed when water quenching tendency.

Application examples
Usually quenched and tempered or normalized state to use in heavy and medium machine building, used as connecting rod, spindle, axle, crank, cold heading bolts and other mechanical parts requiring high stress; in agricultural machinery, used as a shovel hoe, hoe shovel handle and other wear-resistant parts; in the manufacture of small cross section (diameter <20mm) steel parts can be used instead of 40Cr.

 Chemical composition 
 mass fraction) (%)
C: 0.32 ~ 0.39
Si: 0.17 ~ 0.37
Mn: 1.40 ~ 1.80
P: max 0.025
S: max 0.025
Cr: max 0.30
Ni: max 0.30
Cu: max 0.25
   
35Mn2

Mechanical Properties
 
Sample blank size (mm): 25
Heat treatment:
The first quenching temperature centigrade: 840; Coolant: Water
The second quenching temperature centigrade: -
Tempering heating temperature centigrade: 500; Coolant: Water
Tensile strength ( MPa): min 835
Yield point (MPa): min 685
Elongation (%): min 12
Section shrinkage (%): min 45
Impact energy (Aku2 / J): min 55
Brinell hardness (HBS100/3000) (annealing or high temperature tempered condition): max 207