Precision Tube for Roll Cages, Chassis and Structural Parts
Seamless precision tube in high-strength steels — Europe's largest range of stocked dimensions in 25CrMo4, complemented by a deep programme of 15CDV6. Where every gram and every millimetre counts, we supply the raw material for your project.
Request a QuoteTube for Motorsport, Aerospace and Defence
Whether it's a roll cage, a chassis frame, or a structural component in aerospace — with thin-walled, high-strength tube, every detail counts. With more than 29,000 metres in stock, 25CrMo4 is by far our deepest range; complemented by an extensive programme in 15CDV6 and further special grades, up to nickel-base alloys.
Our seamless precision tube is inspected, documented and export-packed in-house, including a 3.1 mill certificate to EN 10204. For details on our processing capabilities, see the Processing & Custom Services section.
In addition to steel grades, we also source tube in aluminium and nickel-base alloys such as Inconel® on request — smaller stocks we already hold today.
- Product Form
- Seamless precision tube
- Outside Diameter
- approx. 6 – 70 mm*
- Wall Thickness
- approx. 0.5 – 5.0 mm*
- Certificate
- 3.1 mill certificate (EN 10204)
- Certification
- AS/EN 9100 & AS/EN 9120
- On Request
- Aluminium & nickel alloys (e.g. Inconel®)
*Based on our current stock levels; guide values, dependent on grade and availability — see the dimensions table for details.
Five Materials Backed by Our Deepest Stock
25CrMo4 and 15CDV6 are the backbone of our tube programme — by far our deepest stock. The further materials round out our range for motorsport, aerospace and special applications.
Low-alloy quenched and tempered steel with a balanced combination of strength, toughness and weldability. Over 29,000 metres in stock across nearly every common dimension — Europe's largest range of stocked 25CrMo4 tube. The classic choice for roll cages and chassis frames.
Low-alloy chromium-molybdenum-vanadium steel, readily weldable and heat-treatable, with high strength at low weight. With around 5,750 metres in stock, our second pillar — proven in frame construction, chassis and structural components in aerospace.
Heat-resistant chromium-molybdenum-vanadium steel with enhanced creep strength. Available from stock in selected dimensions — for applications with elevated heat-resistance requirements.
British cold-drawn precision steel, a classic in FIA motorsport for roll cages and chassis construction — known for its forgiving balance of strength and weldability.
Nickel-base alloy with outstanding corrosion and high-temperature resistance. Smaller stocks already available; larger quantities and special dimensions we source for you on short notice.
Tube Grades in Current Stock
This overview reflects our current, day-to-day stock of seamless tube. Grades not listed and special dimensions are gladly sourced on request.
| German Grade (Werkstoffnummer) | International Grade | Specifications |
|---|---|---|
| 1.7214 / 1.7218 | 25CrMo4 / 25CD4S (seamless, normalised, GBK) | DIN65038 / AIR9160C / EN2208 / EN2206 |
| 1.7734 | 15CDV6 / 15CrMoV6 / FE-PL52 (seamless) | DIN65038 / AIR9160C / EN2213 / EN2214 / EN2249 / EN2252 |
| — | 15CrMoV6.9 | Material standards on request |
| — | T45 (British mill specification) | Certificate on request |
| — | SAE 4130 (Cond. N) | AMS6345 / MIL-S-6758, standards on request |
| 1.4301 | SAE 304 (seamless) | EN10088-3 / AMS5639 |
| 1.4306 | AISI 304L (annealed) | EN10088-3 / AMS5647 |
| 1.4544 | SAE 321 (annealed) | DIN65389 / DIN65390 / AIR9160C |
| 1.4546 | SAE 347 / BS S527 | AMS5512 / BS S100 |
| — | Z10CNT18-11 (annealed, SAE 321 family) | DIN65389 / DIN65390 |
| 2.4856 | Inconel® 625 (annealed) | Material standards on request |
Additional grades as well as further aluminium, nickel and titanium alloys available on request.
Outside Diameter & Wall Thickness from Our Stock
The ranges below are based on our current stock. The actual available combinations of diameter, wall thickness and grade vary — please contact us for your specific size.
| Grade | Outside Diameter | Wall Thickness | Note |
|---|---|---|---|
| 25CrMo4 | 10 – 60 mm | 1.0 – 4.0 mm | 54 dimensions from stock, deepest range in the programme |
| 15CDV6 (1.7734) | 12 – 70 mm | 0.8 – 4.0 mm | 48 dimensions from stock |
| 15CrMoV6.9 | 25 – 30 mm | 1.0 – 1.5 mm | selected dimensions |
| Special & stainless grades | 6 – 50 mm | 0.5 – 1.0 mm | e.g. 1.4301, 1.4306, 1.4544, 1.4546 |
Note: These values reflect our current stock and are not a firm commitment. For binding availability of grade, dimension and length, please contact your account manager.
Processing & Custom Services
Beyond the raw semi-finished product, we offer processing services that support your project from the outset — from chassis construction to aerospace components.
Sawing & Cutting
Precise cutting of tube to your required length.
Bevelling & End Preparation
Preparation for welding and joining, to your drawing.
Heat Treatment
Quenching, tempering and normalising to customer specification.
Material Testing
Chemical analysis, hardness testing, ultrasonic inspection.
Demonstrable Quality on Every Tube Delivery
Our Inspection Programme for Tube
Every heat of tube goes through a defined inspection programme before release — from visual inspection to independent laboratory testing.
100% Dimensional & Visual Inspection
Every tube is fully checked for dimensional accuracy and surface condition.
Spectrographic Analysis
Material analysis to confirm chemical composition for each heat.
Mechanical Testing
Tensile, hardness and further tests per customer requirement and specification.
Independent Materials Laboratory
Additional testing through an external, accredited laboratory on request.
Marking to Customer Requirements
Identification of heat, grade and dimension per your specification.
100% Documentation
Complete traceability with a 3.1 mill certificate to EN 10204.
Tube — Questions & Answers
Why is 25CrMo4 so strongly represented at Tennant Metall?
With over 29,000 metres in stock across nearly every common dimension, we carry Europe's largest range of stocked 25CrMo4 tube. The material is our core programme for roll cages, chassis frames and structural components.
Which tube grades does Tennant Metall regularly hold in stock?
Alongside 25CrMo4 and 15CDV6 (1.7734) as core grades, we carry 15CrMoV6.9, T45, various stainless grades (1.4301, 1.4306, 1.4544, 1.4546) and smaller stocks of Inconel® 625. See the full overview in the stock programme section above.
Does Tennant Metall also supply tube in special dimensions or less common grades?
Yes. Beyond our listed stock programme, we source unusual materials and dimensions on request — please speak to your account manager.
Does Tennant Metall also supply tube in aluminium or nickel-base alloys such as Inconel?
Yes. We already hold smaller stocks of Inconel® 625; larger quantities as well as aluminium alloys we source on short notice on request.
What certifications apply to tube deliveries?
Tennant Metall is certified as a manufacturer/processor to AS/EN 9100 and as a distributor to AS/EN 9120, holds NCAGE number CH223, and has an Airbus approval (ARP ID 203381).
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Castroper Str. 80 · 44628 Herne, Germany · +49 (0) 2323 96540-0 ·
