GB 45Mn Steel
GB 45Mn steel is a high-quality carbon structural steel widely used in various manufacturing industries. This steel grade has excellent mechanical and physical properties, making it suitable for use in a variety of applications.
One of the most significant advantages of GB 45Mn steel is its excellent hardenability. This property makes it possible to achieve a high level of surface hardness with excellent wear resistance without compromising its toughness. Additionally, the steel has good strength and ductility, making it easy to form and shape.
The steel is also known for its high machinability, allowing for easy processing and precision cutting. This property ensures that it can be used for a variety of applications that require high precision and accuracy.
GB 45Mn steel's excellent mechanical properties are further enhanced by its wide range of applications. This steel grade is commonly used in the manufacturing of gears, shafts, axles, bearing components, and many other critical parts in machinery and equipment.
Finally, GB 45Mn steel is also highly resistant to corrosion, making it an ideal choice for outdoor applications or in environments where the steel is exposed to moisture or chemicals.
In conclusion, GB 45Mn steel is a versatile and reliable material that has become a staple of modern manufacturing. Its excellent mechanical and physical properties, combined with its ability to resist wear and corrosion, make it an essential component in many industries.
- Chemical composition: Carbon content 0.42-0.50%, manganese content 0.75-1.00%, silicon content 0.17-0.37%;
- Mechanical properties: tensile strength ≥720 MPa, yield strength ≥620 MPa, elongation ≥16%;
- Heat treatment performance: quenching, normalizing and tempering treatment, can adjust its hardness and toughness at different temperatures;
- Machining performance: easy cutting, good surface quality, high machining accuracy;
- Weldability: conventional arc welding, argon arc welding and other welding methods can be used.
| Proof strength Rp0.2(MPa) |
Tensile strength Rm(MPa) |
Impact energy KV(J) |
Elongation at fracture A(%) |
Reduction in cross section on fracture Z(%) |
As-Heat-Treated Condition | Brinell hardness(HBW) |
|---|---|---|---|---|---|---|
| 861(≥) | 762(≥) | 12 | 21 | 24 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 231 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J/kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 499(≥) | 532(≥) | 42 | 11 | 42 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 121 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0)N/mm2 |
Creep rupture strength (10000h) (Rp1,0)N/mm2 |
|||||
| 673 | 918 | 578 |
Hot Tags: gb 45mn steel, China gb 45mn steel manufacturers, suppliers, factory, 45Mn Carbon Steel Round Bar, 40Mn Hot Rolled Steel Plate, Chain Steel, 20Mn Carbon Steel Plate
Previous
Special Alloy Steel 45MnNext
GB 45MnYou Might Also Like
Send Inquiry