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4130 4140 30CrMo 42CrMo Chromoly Alloy Round Steel Tube

  • alloy steel

  • as per request

  • as per request

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4130 4140 30CrMo 42CrMo Chromoly Alloy Round Steel Tube supplier


Description of 4130, 4140, 30CrMo, and 42CrMo Chromoly Alloy Round Steel Tubes

Overview

Chromoly alloy steel tubes are known for their strength, toughness, and resistance to abrasion and impact. Common grades include 4130, 4140, 30CrMo, and 42CrMo, each with specific properties that make them suitable for various industrial applications.

Key Properties

4130 Alloy Steel Tube

  • Composition: 0.28-0.33% Carbon, 0.40-0.60% Manganese, 0.80-1.10% Chromium, 0.15-0.25% Molybdenum

  • Mechanical Properties: High strength, good weldability, and toughness. Typically used in the aviation and motorsport industries.

  • Applications: Aircraft engine mounts, roll cages, bicycle frames, and other high-stress components.

4140 Alloy Steel Tube

  • Composition: 0.38-0.43% Carbon, 0.75-1.00% Manganese, 0.80-1.10% Chromium, 0.15-0.25% Molybdenum

  • Mechanical Properties: High fatigue strength, excellent toughness, and good wear resistance. It is more robust than 4130 due to higher carbon content.

  • Applications: Shafts, gears, spindles, high-strength bolts, and other heavy-duty components.

30CrMo Alloy Steel Tube

  • Composition: 0.26-0.34% Carbon, 0.40-0.70% Manganese, 0.90-1.20% Chromium, 0.15-0.25% Molybdenum

  • Mechanical Properties: Good hardenability, high strength, and impact toughness. It offers good ductility and weldability.

  • Applications: Structural parts, aircraft components, and high-stress machinery parts.

42CrMo Alloy Steel Tube

  • Composition: 0.38-0.45% Carbon, 0.60-0.90% Manganese, 0.90-1.20% Chromium, 0.15-0.25% Molybdenum

  • Mechanical Properties: Superior strength, excellent toughness, and high fatigue strength. It provides outstanding hardenability and uniform strength.

  • Applications: High-strength machine parts, automotive components, and engineering structures.

Manufacturing and Heat Treatment

  • Chromoly alloy steel tubes can be manufactured using various methods, including seamless and welded processes.

  • Common heat treatments include normalizing, quenching, and tempering, which enhance mechanical properties like hardness and strength.

Dimensions and Tolerances

  • These tubes are available in a wide range of diameters and wall thicknesses to meet diverse application requirements.

  • Precise dimensional tolerances ensure the tubes meet specific industrial standards for uniformity and compatibility.

Applications

Automotive Engineering

  • Widely used in roll cages, drive shafts, and suspension components due to their high strength-to-weight ratio and durability.

Aerospace

  • Preferred for structural and engine components where high performance and reliability are critical.

Industrial Machinery

  • Used in making shafts, gears, and other components that require high strength and wear resistance.

Testing and Quality Control

  • Tubes undergo rigorous testing to ensure quality, including:

    • Tensile and Hardness Tests: To measure strength and hardness.

    • Impact Tests: To assess toughness and resistance to impact.

    • Non-Destructive Testing: Such as ultrasonic testing to detect internal flaws.

Marking and Certification

  • Each tube is marked with essential information, including the grade, size, and heat number for traceability.

  • Certification documents provide detailed chemical composition, mechanical properties, and test results to ensure compliance with specifications.

Summary

4130, 4140, 30CrMo, and 42CrMo chromoly alloy round steel tubes offer a combination of high strength, toughness, and excellent mechanical properties. These characteristics make them suitable for demanding applications in automotive, aerospace, and industrial machinery sectors.


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