Tube 25crmo4

Tube 25CrMo4 is a seamless tube made from low-alloy chromium-molybdenum steel 25CrMo4. It can be processed by hot rolling, cold rolling, and cold drawing. It has high tensile strength, good toughness, and excellent weldability. It is commonly used in the automotive, aerospace, and high-voltage mechanical systems industries.
Outer Diameter: 5mm-420mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Steel Grade: 25CrMo4
Standard:DIN EN 10297-1, EN 10305-1, EN 10083-1

Products Description

Tube 25crmo4

Advantages of Tube 25crmo4

Tube 25CrMo4 can be heat-treated, through quenching and tempering, to achieve a customized combination of hardness, strength, and ductility for parts requiring specific mechanical properties.
Tube 25CrMo4's high strength and fatigue resistance make it ideal for roll cages, suspension arms, drive shafts, and chassis components subject to sustained vibration and dynamic loads.
Tube 25CrMo4 exhibits excellent high-temperature stability, enabling reliable operation in environments exposed to moderately high temperatures, such as engine nacelles in aerospace applications.

Applications of Tube 25crmo4

Automotive Industry: Roll cages and chassis frames, suspension arms and components, drive shafts, and steering columns for racing and high-performance vehicles.
Aerospace Industry: Airframe structural tubes and lightweight support structures, hydraulic lines, landing gear components, and actuation systems.
Mechanical Engineering: Rotating mechanical components in gearboxes and transmissions, precision mechanical parts such as shafts, bushings, and cylindrical housings.
High-Pressure and Hydraulic Systems: Hydraulic and pneumatic cylinders, high-pressure delivery pipes, etc.

Chemical Composition

Element	Carbon	Silicon	Manganese	Phosphorus	Sulfur	Chromium	Molybdenum
Composition (%)	0.22 – 0.29	≤ 0.40	0.60 – 0.90	≤ 0.025	≤ 0.035	0.90 – 1.20	0.15 – 0.30

Mechanical Properties

Property	Tensile Strength	Yield Strength	Elongation	Impact Energy	Hardness
Value	750 – 980 MPa	≥ 500 MPa	≥ 14%	≥ 35 J (at 20°C)	~ 200–240 (annealed)

Physical Properties

Property	Density	Melting Point	Thermal Conductivity	Electrical Conductivity
Value	7.85 g/cm³	1420 - 1460 °C	46 W/m·K	13 - 16 % IACS

Possible Alternative Grades

AISI 4130 (USA) – Very similar composition and properties
SCM430 (Japan) – Equivalent to 25CrMo4 in JIS
42CrMo4 (if higher strength needed) – Stronger but less ductile
16MnCr5 (for carburized applications) – If surface hardening is required

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25CrMo4 Tube

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