45mn Carbon Structural Steel
45mn carbon structural steel
is a medium carbon steel that has a carbon content of 0.42-0.49%. It contains small amounts of manganese, silicon, and phosphorus, which improve its mechanical properties and make it suitable for a range of engineering applications.
45mn steel is known for its high strength and good ductility. It has excellent toughness and can withstand high levels of stress. It is commonly used in manufacturing machinery parts, structural components, and cutting tools.
Additionally, 45mn steel can be easily machined and welded, making it a versatile material for various applications. Its hardness can be increased through heat treatment, which improves its wear resistance.
Overall, 45mn carbon structural steel is a reliable choice for applications that require high strength and durability.
Standard: GB /T 711-2017 chemical element requirements for 45Mn high-quality carbon structural steel:
| chemical elements | C | Si | Mn | P | S | Cr | Ni | Cu |
| Min | 0.42 | 0.17 | 0.7 | - | - | - | - | - |
| Max | 0.5 | 0.37 | 1 | 0.035 | 0.03 | 0.2 | 0.3 | 0.25 |
Standard: GB /T 711-2017 for 45Mn high-quality carbon structural steel mechanical properties requirements:
| category | yield strength | strength of extension | ductility | ercentage reduction of area | hardness | decarburized layer | grain size | banded structure |
| Rm | Rm | % | % | （hot rolling） | （two-sided） | |||
| （Mpa） | （Mpa） | HRB | ||||||
| Min | 620 | 15 | 89 | |||||
| Max | 105 | 5% | ||||||
| numerical value |
45Mn can supply cold rolled spot specifications:
Thickness: 0.2mm~6.0mm
Width: 15mm~620mm or 1000mm~1250mm
Hardness: Cold (hrb89~ hrb 105)
Soft state (hrb75~ hrb 85)
45Mn cold rolled delivery surface treatment: blue, black, polished, bright, mirror
45Mn available hot rolled spot specifications:
Thickness: 2.0mm~6.0mm
Width: 15mm~620mm or 1000mm~1250mm
Hardness: conventional steel delivery status (hrb80~ hrb 90)
45Mn Uses and features
After quenching and tempering treatment, 45Mn carbon structural steel can obtain better comprehensive mechanical properties, cutting performance is good, but poor welding performance, low cold deformation plasticity, temper brittleness tendency, generally used in the quenching state, and can also be used in quenching and tempering or normalizing state. 45Mn commonly used after tempering hardness in hrc36~hrc45 degrees, a wide range of use, good toughness.
45Mn is used to manufacture worn parts such as shafts, mandrels, crankshafts, spline shafts, connecting rods, universal joint shafts, engaging rods, gears, clutch discs, bolts, nuts, etc.
45Mn round steel Shipping Methods
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