25CrMo4 Tube — Europe's Largest Range From Stock
Seamless cold-drawn precision tube in 25CrMo4 (1.7218) to Tennant's in-house specification TE012 — tested, documented and available immediately in more than 50 dimensions.
Request a Quote- AS/EN 9100 (Manufacturer)
- AS/EN 9120 (Distributor)
- NCAGE CH223
- Airbus Approval ARP ID 203381
- EN 10204 3.1 Certificates on Request
What Is 25CrMo4?
25CrMo4 (material number 1.7218, also known as 25CD4 or Chromoly) is a low-alloy chromium-molybdenum quenched-and-tempered steel. Its combination of high strength, good toughness and weldability makes it one of the most requested materials in motorsport, aerospace and general engineering.
After heat treatment, 25CrMo4 reaches tensile strengths of 650–850 N/mm² with a minimum elongation of 18 %. The material is readily cold-formable and hardenable, and can be reliably welded and brazed with appropriate pre- and post-heating. Our tube is used to build roll cages, chassis and suspension components, shafts, and structural and connecting elements for aerospace applications.
Our tubes are hot rolled, cold drawn and heat treated to our in-house specification TE012, which covers the requirements of 1.7214.9 and 25CD4S and, in mechanical properties, complies with SAE 4130 / MIL-T-6736 (N) with controlled carbon content.
At a Glance
- Material
- 25CrMo4 / 25CD4
- Material No.
- 1.7218
- Condition
- Cold drawn, heat treated
- Tensile strength
- 650–850 N/mm²
- Proof strength Rp0.2
- ≥ 520 N/mm²
- Elongation
- ≥ 18 %
- Hardness
- ≥ HV 204
- Tolerances
- EN 10305-1
| Property | TE012 (Tennant) | Reference standard / values |
|---|---|---|
| Designation | 25 CrMo 4 / 25 CD 4 | 1.7214.9, 25CD4S, SAE 4130 |
| C | 0.22 – 0.29 % | controlled carbon content per MIL-T-6736 (N) |
| Mn | 0.60 – 0.90 % | – |
| Si | 0.10 – 0.40 % | – |
| S | ≤ 0.035 % | – |
| P | ≤ 0.035 % | – |
| Cr | 0.90 – 1.20 % | – |
| Mo | 0.15 – 0.25 % | – |
| Ni | ≤ 0.30 % | – |
| Tensile strength Rm | 650 – 850 N/mm² | 95,000 – 123,000 psi |
| Proof strength Rp0.2 | ≥ 520 N/mm² | 76,000 psi |
| Elongation A | ≥ 18 % | – |
| Hardness (control only) | ≥ HV 204 | tensile properties are deciding |
| Dimensional tolerances | EN 10305-1 | – |
| Condition | Hot rolled, cold drawn, heat treated | – |
| Marking | Grade – dimension – cast number, on tags | – |
Source: Tennant in-house specification TE012, version 15.11.13. Chemical analysis and mechanical properties meet the requirements of 1.7214.9 and 25CD4S; mechanical properties comply with SAE 4130 / MIL-T-6736 (N) with controlled carbon content. Inspection certificates (2.2 / 3.1 per EN 10204) available on request.
What Is 25CrMo4 Used For?
The balanced combination of strength, toughness, weight and weldability makes 25CrMo4 tube the standard material for safety-critical structural components.
Motorsport & Racing
Roll cages, chassis and suspension frames for rally, circuit racing and karting. Good weldability and flexibility make 25CrMo4 the FIA-recognised standard material for safety cages.
Aerospace & Defence
Structural components, landing-gear elements and frame parts where high strength at low weight is required. Comparable properties to SAE 4130 / MIL-T-6736 (N).
Mechanical & Automotive Engineering
Shafts, crankshafts, fasteners, vehicle frames and other highly loaded structural elements. Good hardenability allows strength to be tailored to the component.
Bicycle & Motorcycle Frame Building
Light, stiff frame tubing for racing and performance bicycles as well as motorcycle frames — high strength with thin-walled, weight-optimised design.
Cylinders & Pressure Applications
Tube for the safe transport of pressurised gases, as well as hydraulic and pneumatic systems with demanding load requirements.
Defence & Special Vehicles
Structural components for armoured and protected vehicles as well as military applications, where strength and toughness under load are critical.
Europe's Largest Range of 25CrMo4 Tube — Available From Stock
We stock cold-drawn, seamless 25CrMo4 tube in 53 dimensions with around 28,800 metres constantly on hand — the basis for short-term availability without long lead times. If you need a special dimension or profiles such as tear-drop or square tube, we source them for your project at short notice.
| OD × Wall | OD × Wall | OD × Wall | OD × Wall | OD × Wall |
|---|---|---|---|---|
| 10 x 1.0 mm | 18 x 2.0 mm | 25 x 1.0 mm | 30 x 3.0 mm | 40 x 2.5 mm |
| 12 x 1.0 mm | 20 x 1.0 mm | 25 x 1.5 mm | 32 x 1.0 mm | 40 x 3.0 mm |
| 12 x 2.0 mm | 20 x 1.5 mm | 25 x 2.0 mm | 32 x 1.5 mm | 45 x 1.5 mm |
| 14 x 1.0 mm | 20 x 2.0 mm | 25 x 2.5 mm | 32 x 2.0 mm | 45 x 2.0 mm |
| 14 x 2.0 mm | 22 x 1.0 mm | 25 x 4.0 mm | 32 x 2.5 mm | 45 x 2.5 mm |
| 16 x 1.0 mm | 22 x 1.5 mm | 28 x 1.0 mm | 35 x 1.0 mm | 50 x 1.5 mm |
| 16 x 1.5 mm | 22 x 2.0 mm | 28 x 1.5 mm | 35 x 1.5 mm | 50 x 2.0 mm |
| 16 x 2.0 mm | 22 x 3.0 mm | 28 x 2.0 mm | 35 x 2.0 mm | 50 x 2.5 mm |
| 18 x 1.0 mm | 24 x 1.0 mm | 28 x 3.0 mm | 40 x 1.0 mm | 50 x 3.0 mm |
| 18 x 1.5 mm | 30 x 1.0 mm | 40 x 1.5 mm | 50 x 3.5 mm | |
| 30 x 1.5 mm | 40 x 2.0 mm | 60 x 1.0 mm | ||
| 30 x 2.0 mm |
All dimensions available as hot-rolled, cold-drawn 25CrMo4 tube (1.7218) in random mill length (HL). In addition, we stock 25CD4S normalised and 25CrMo4 GBK in selected special dimensions. Standard length, cut-to-length or fixed length to your specification.
Prepared to Your Specification
Sawing & Cutting
Cut to length, saw-cut or deburred, ready for collection or shipping.
Special Profiles
Tear-drop and square tube as well as special dimensions on request.
Inspection Certificates
EN 10204 2.2 / 3.1 certificates available on request.
Just-in-Time
Stockholding for framework orders and recurring demand.
Exceptional Quality, Not Just Standard Compliance
Every process is subject to continuous monitoring, control and documentation. Each batch of 25CrMo4 tube is tested to our in-house specification TE012 and marked with grade, dimension and cast number.
- AS/EN 9100 — certified as manufacturer/processor
- AS/EN 9120 — certified as distributor
- NCAGE CH223
- Airbus approval, ARP ID 203381
- Inspection certificates per EN 10204 (2.2 / 3.1) on request
- Dimensional tolerances per EN 10305-1
25CrMo4 Tube — FAQ
What is the material number of 25CrMo4?
25CrMo4 carries the material number 1.7218 (also known as 25CD4 or 25CD4S). Our tube is supplied to Tennant's in-house specification TE012, whose chemical analysis and mechanical properties meet the requirements of 1.7214.9 and 25CD4S.
Is 25CrMo4 weldable?
Yes, 25CrMo4 is generally readily weldable, which is why it is widely used for roll cages and frame construction. Given its carbon and alloy content, pre- and post-heating is recommended for larger wall thicknesses to avoid cold cracking in the heat-affected zone.
What tensile strength does the tube achieve?
In the heat-treated condition, our 25CrMo4 tube to TE012 achieves a tensile strength of 650–850 N/mm² with a minimum proof strength Rp0.2 of 520 N/mm² and a minimum elongation of 18 %.
Which dimensions are available from stock?
We hold 53 dimensions of seamless 25CrMo4 tube with around 28,800 metres constantly in stock, from 10 x 1.0 mm to 60 x 1.0 mm. Special dimensions and profiles such as tear-drop or square tube are sourced at short notice on request.
Do you also supply private customers?
For motorsport and hobby applications in smaller quantities, we recommend our online shop motorsport-metall.de. For commercial requirements and larger volumes, we supply directly from our stock in Herne, Germany.
Also of Interest
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