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Free Cutting Bar
Free Cutting Bar
Free Cutting Bar

Free Cutting Steel Bar

Free cutting steel bar usually refers to a rod-like material with excellent cutting properties. This material in the machining process, due to its special physical and chemical properties, can be more easily and quickly processed by cutting tools, thereby improving production efficiency and reducing production costs.
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Specification
Introduction
Features
Mechanical Properties
Related Products
Specification Of Free Cutting Bar
Model NO. 1020 1045 CK45 S45C 4140 4340 4130, etc.
Standard AISI, ASTM, GB, JIS, DIN, BS
Application Structural Steel Bar, Tool Steel Bar, Die Steel Bar
Surface Treatment Black
Process Eaf + Lf + Vd + Forged + Heat Treatment
Diameter 6mm-500mm
Length 2000mm-15000mm or Cut to Length
Transport Package Standard Sea Export Packaging

Product Introduction

Free cutting bar usually refers to a rod-like material with excellent cutting properties. This material in the machining process, due to its special physical and chemical properties, can be more easily and quickly processed by cutting tools, thereby improving production efficiency and reducing production costs. It is widely used in various fields requiring high precision and high efficiency cutting, such as automobile manufacturing, machinery manufacturing, aerospace and so on.

Standard: AISI, ASTM, GB, JIS, DIN, BS

Material: Q235B, Q345b, Q345c, Q345D, Ss400, Ck45, 4140, 42CrMo, etc.

Grade(take AISI type as an example): AISI 201, 202, 204CU, 430, 410, 416, etc.

Length: 6m, 9m, 12m or Customized

Tolerance: 6M(+/-50MM)12M(+/-100MM)

Certification: ISO 9001:2008

Advantageous Features
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Cutting performance
Free cutting steel has excellent cutting performance, which is mainly due to its unique chemical composition and manufacturing process. During the cutting process, it can quickly remove materials, reduce cutting forces, reduce tool wear, and thus improve processing efficiency.
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Processing performance
In addition to cutting performance, it also has good processing performance. Whether it is cold processing or hot processing, it can show excellent plasticity and malleability, and adapt to various cutting methods, such as turning, milling, drilling and so on.
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Mechanical properties
After proper heat treatment, this bar can obtain certain mechanical properties, such as tensile strength, yield strength and elongation. These properties make it able to maintain good stability and reliability when subjected to external forces.
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Corrosion resistance
In general corrosive media, free cutting bright bars have good corrosion resistance, which helps to extend the service life and reduce maintenance costs.

Mechanical Properties

Free cutting steel is a type of steel specifically designed to enhance the efficiency and quality of cutting processes. We usually improve its cutting performance by adjusting the chemical composition, such as adding appropriate amounts of sulfur, lead and other elements.
01
Tensile strength σb (MPa)
Hot rolled: 390~540;
Cold drawn Steel thickness or diameter:
8~20: 530~755;
>20~30: 510~735;
>30:490~685;
02
Elongation δ5 (%)
hot rolled: ≥22;
cold rolled: ≥7.0
03
Reduction of area ψ (%)
hot rolled: ≥ 36
04
Hardness
hot rolled: ≤170HB;
cold drawn:152~217HB

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