45Mn Steel Grades
45Mn steel is a type of high-quality carbon structural steel that is widely used in many industries due to its excellent mechanical properties. This steel grade is known for its high strength, toughness, and wear resistance, making it ideal for applications where heavy loads and harsh operating conditions are present.
One of the key advantages of 45Mn steel is its versatility. It can be easily processed and shaped into various forms such as rods, bars, plates, and tubes, making it suitable for use in a range of different structures and components.
Moreover, this steel grade is also known for its excellent heat treatment properties. It can be heat treated to increase its hardness and strength, which makes it suitable for applications where higher durability and longer service life are required.
In addition to its mechanical properties, 45Mn steel is also highly resistant to corrosion and rust, which makes it ideal for use in harsh environments. With proper maintenance and treatment, it can last for many years without showing any signs of wear or degradation.
Overall, 45Mn steel is a highly reliable and durable steel grade that has been proven to perform well in a wide range of applications. Its excellent mechanical properties, heat treatment capabilities, and corrosion resistance make it an ideal choice for use in many industries, including engineering, construction, manufacturing, and more. As such, it is a steel grade that continues to be in high demand by businesses and industries worldwide.
- Chemical composition
- Chemical composition includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S) and other elements. Among them, the carbon content is 0.42%~0.49%, and the manganese content is 0.70%~1.00%.
- Mechanical property
- It has the characteristics of high strength, high toughness and good wear resistance. After proper heat treatment, its performance can be further improved.
- Application field
- Widely used in the manufacture of heavy duty components, such as bearings, gears, sprockets, leaf springs, etc. In addition, it is also commonly used in the manufacture of mechanical parts and sheet welded parts.
- Production technology
- The production process mainly includes smelting, casting, heat treatment and other steps. Its manufacturing process is complex and requires strict control of each link to ensure product quality.
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | 45Mn | GBT | China |
Chemical composition%of the ladle analysis
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Cu(%) |
|---|---|---|---|---|---|---|---|
| 0.42-0.50 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | 0.25 | 0.3 | 0.25 |
| 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 |
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