Steel 45mn

Steel 45MN is a type of steel that is widely used in various industries due to its outstanding mechanical properties. This type of steel has high strength and good toughness, which makes it ideal for a wide range of applications.

One of the significant advantages of Steel 45MN is its high strength, which means that it can withstand a considerable amount of stress without cracking or breaking. This makes it a popular choice for manufacturing heavy-duty machinery and equipment that requires high tensile strength.

Furthermore, Steel 45MN exhibits excellent toughness, which makes it an ideal choice for constructing buildings, bridges, and other structures that require durability and resilience. The steel can withstand harsh environmental conditions, such as extreme temperatures and humidity levels, without losing its strength or integrity.

In addition, Steel 45MN is corrosion resistant, which enhances its longevity and durability. When exposed to harsh environmental conditions, the steel is less likely to rust, oxidize, or corrode, which means that it can last longer than other types of steel.

Steel 45MN is also an affordable and versatile material that can be easily molded, machined, and welded to meet different design specifications and requirements. This makes it a popular choice for various industries, such as automotive, construction, energy, and manufacturing.

Chemical composition

The main component is Fe (iron) and contains small amounts of the following elements:

Carbon C: 0.42 ~ 0.50%

Silicon Si: 0.17 ~ 0.37%

Mn: 0.70 ~ 1.00%

Sulfur S: ≤0.035%

P: ≤0.035%

Chromium Cr: ≤0.25%

Nickel Ni: ≤0.25%

Copper: ≤0.25%

Mechanical property

Tensile strength σb (MPa) : ≥620(63)

Yield strength σs (MPa) : ≥375(38)

Elongation δ5 (%) : ≥15

Section shrinkage ratio ψ (%) : ≥40

Impact power Akv (J) : ≥39

Impact toughness value αkv (J/cm2) : ≥49(5) Hardness: no heat treatment ≤241HB; Annealed steel ≤217HB

Heat treatment process: 850℃ normalizing, 840℃ quenching, 600℃ tempering.

Corresponding brand

Us standard: 1035

Day mark: S45C

British standard: 080A52

Standard: XC35

Former Soviet Union: 50Γ

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