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40Mn Ultrahigh strength steel

40Mn Ultrahigh strength steel

40Mn carbon structural steel has cutting performance, cold deformation of the plastic medium, poor welding performance. 40Mn HRC is used for parts subject to fatigue load, such as the shaft roller and high stress work under the screws, nuts and so on.

After heat treatment, the strength, hardness, toughness of 40Mn is slightly higher than the 40 steel, cold deformation of the plastic medium, good machinability, low weldability, with overheating sensitivity and temper brittleness, water quenching and cracking. For fatigue-resistant parts, crankshaft, roller, shaft, connecting rod.

40Mn HRC chemical composition %


Grade

C

S

Mn

P

Si

Cr

Cu

Ni

40Mn

0.19-0.25

≤0.035

0.7-1.0

≤0.035

0.37-0.44

≤0.25

45-58

≤0.30

40Mn steel mechanical properties


Grade

Yield strength(Mpa)

Tensile strength (MPa)

Elongation%

40Mn

355min

590min

17min

40Mn Ultrahigh strength steel delivery condition:Normalizing, 860 ℃; quenching, 840 ℃; tempering, 600 ℃.
Supply size: thickness 1.2-25mm; coils width 600-2000mm; strips width≦600mm
Product type : 40Mn steel coil, 40Mn steel strip,40Mn steel sheet
Delivery time : Promptly ( Stock) or 10-40 days (Production)

Shanghai RoYal Industry keeps more than 10,000 tons in stock each month, including 40Mn Ultrahigh strength steel and other kinds steels. Our advantage industry also spread into steel process like : cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.

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