EN 10083-2 C45E carbon steel seamless pipe

EN 10083-2 C45E is a medium-carbon steel grade used for mechanical engineering applications, particularly in producing seamless steel pipes that require good strength and wear resistance. Here is an overview of EN 10083-2 C45E carbon steel seamless pipe.

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Chemical Composition (Typical Values) of EN 10083-2 C45E Carbon Steel Seamless Pipes

Mechanical Properties (After Heat Treatment) of EN 10083-2 C45E Carbon Steel Seamless Pipes

Heat Treatment Options of EN 10083-2 C45E Carbon Steel Seamless Pipes

Normalized (N): Improves strength and toughness.

Quenched and Tempered (Q&T): Enhances wear resistance and mechanical properties.

Applications of EN 10083-2 C45E Carbon Steel Seamless Pipes

Hydraulic and pneumatic cylinders

Machinery parts and shafts

Automotive and structural components

Precision engineering

Advantages of EN 10083-2 C45E Carbon Steel Seamless Pipes

Good machinability and workability

Moderate wear resistance

Suitable for hardening and tempering

Manufacturing Process & Testing Requirements for EN 10083-2 C45E Carbon Steel Seamless Pipes

1. Manufacturing Process

The production of C45E seamless pipes follows strict quality control measures to ensure mechanical properties and dimensional accuracy. The key manufacturing steps include:

(1) Raw Material Selection

High-quality C45E billets are used, meeting EN 10083-2 chemical composition standards.

(2) Hot Rolling or Hot Extrusion

The billets are heated to a controlled temperature (typically above 1200°C) and pierced to form a hollow shell.

The shell is elongated using a Mannesmann process or pilger rolling to achieve the required dimensions.

(3) Cold Drawing (If Required)

For precision applications, pipes may undergo cold drawing to improve surface finish and dimensional accuracy.

(4) Heat Treatment

C45E pipes can be supplied in different heat treatment conditions based on the application:

Annealed (A): Softens the material for better machinability.

Normalized (N): Enhances toughness and refines grain structure.

Quenched and Tempered (Q&T): Improves strength and wear resistance.

(5) Surface Treatment

Pipes may be black-painted, oiled, galvanized, or phosphate-coated to enhance corrosion resistance.

Machined surfaces (if required) may be polished.

(6) Cutting & End Finishing

Pipes are cut to specified lengths and can have plain ends (PE), beveled ends (BE), or threaded ends (TE).

2. Testing Requirements

To ensure compliance with EN 10083-2 standards, the following tests are commonly performed:

(1) Chemical Analysis

Verified through spectrochemical analysis to confirm compliance with EN 10083-2 composition requirements.

(2) Mechanical Testing

Tensile Test: Ensures yield strength, tensile strength, and elongation meet specifications.

Hardness Test: Typically Brinell (HBW) or Rockwell (HRC) to check hardness limits.

Impact Test (if required): Charpy V-notch test to evaluate toughness at low temperatures.

(3) Non-Destructive Testing (NDT)

Ultrasonic Testing (UT): Detects internal flaws.

Magnetic Particle Inspection (MPI): Checks surface defects (for pipes in quenched & tempered condition).

(4) Dimensional & Surface Inspection

Pipes are measured for outer diameter (OD), wall thickness (WT), and length tolerances as per EN 10305-1 (for precision tubes) or EN 10297-1 (for general structural use).

Surface finish is checked to ensure smoothness and absence of defects like cracks, scales, or laps.

(5) Pressure & Leak Testing (if applicable)

Hydraulic or pneumatic pressure tests may be conducted to ensure pipe integrity, especially for high-pressure applications.