45Cr alloy structural steel

45Cr steel is an alloy structural steel material widely used in machinery manufacturing, automotive parts, tool manufacturing and other fields. 45Cr alloy steel has good mechanical properties, wear resistance, heat treatment performance and is easy to process. 45Cr alloy steel primarily used in China under the GB/T 3077 standard, offers a balanced combination of strength, toughness, and wear resistance, making it a preferred choice for manufacturing critical components. 45Cr alloy structural steel incorporates chromium as an alloying element, enhancing its hardenability and corrosion resistance. 

45Cr alloy structural steel is characterized by medium carbon content and chromium alloying, which contribute to its superior strength and ability to withstand high stress and wear. After appropriate heat treatment, such as quenching and tempering, 45Cr exhibits enhanced hardness and durability, making it suitable for demanding environments.

Conventional Dimensions:
Round bars: Diameter ranging from 10 mm to 300 mm.
Flat bars: Thickness from 5 mm to 50 mm, width from 20 mm to 200 mm.
Steel Plates: Thickness from 10 mm to 100 mm, width up to 2000 mm.

Chemical Composition of 45Cr alloy steel

The chemical composition of GB/T 45Cr alloy steel is critical to its performance.

Mechanical Properties of 45Cr alloy steel

The mechanical properties of 45Cr alloy steel vary depending on the heat treatment process.

Equivalent Steel Grades 45Cr

45Cr alloy structural steel has comparable grades in international standards, which can be used as alternatives depending on regional availability.