25CRMo4 40×2,5 TUBE 4,3 Meters

General Information

This Chromium-Molybdenum alloy steel tube (25CrMo4) is designed for high-strength structural applications, commonly used in motorsport and off-road builds such as roll cages and tubular frames.

Product Details:

• Material: 25CrMo4 (Chromium-Molybdenum Alloy Steel)
• Brand: Endurotube
• Applications: Roll cages / Tube frames / Structural builds
• External Diameter: 45.00 mm
• Internal Diameter: 40.00 mm
• Wall Thickness: 2.50 mm
• Length: 5,500 mm
• Weight: 2.62 kg/m
• Standardization: UNI 6403 / DIN 2391
• Yield Strength: >700 N/mm²
• Tensile Strength: 800–1000 N/mm²
• GTIN: 0

This tube offers an excellent strength-to-weight ratio, making it ideal for demanding environments where durability and rigidity are essential.

Product Description

25CrMo4 +SR is a seamless, cold-drawn precision steel tube designed for high mechanical performance and demanding applications in motorsports and aviation. In production since 2006, it is one of our best-selling products, specifically manufactured to meet our strict quality criteria and the standards expected by professional racing and automotive customers.

25CrMo4 steel is alloyed with Chromium (Cr) and Molybdenum (Mo), which significantly improve its strength and durability compared to mild carbon steel. Thanks to its excellent strength-to-weight ratio, it is widely used in structural and safety-critical applications like roll cages, frames, and suspension components.

Each tube is:

• Easy to weld
• Delivered ground inside and outside
• Free from scale and oil-coated for corrosion protection
• Clearly marked with: Dimension, Certificate Number, Heat Number, and Article Number

Certification & Quality

Not all chromium-molybdenum steel tubes are created equal. Over time, we’ve identified several manufacturers whose materials fail to meet the strict standards we and our clients demand.

On request, we provide each tube with an Inspection Certificate EN 10204-3.1, guaranteeing traceability, mechanical properties, and chemical composition.