Round Bar for Your Application
Stainless and alloy round bars in mill or fixed lengths, from stock or on short-term procurement. Certified stockholder and processing facility to AS/EN 9100 and AS/EN 9120.
Request a QuoteRound Bar for Aerospace, Defence, Motorsport and Mechanical Engineering
As a certified stockholder and processing facility to AS/EN 9100 and AS/EN 9120, Tennant Metall & Technologie carries an extensive supply programme of round bar — from martensitic precipitation-hardening stainless steels to low-alloy quenched and tempered steels. Most common grades are available from stock; special grades and unusual dimensions are sourced on short notice on request.
On request we supply cut lengths up to 550 mm diameter to your specification, including a 3.1 mill certificate to EN 10204 and export-ready packaging to IPPC standard. For more on our processing capabilities, see the Processing & Value-Added Services section.
In addition to steel grades, we also source and stock round bar in aluminium and nickel-base alloys such as Inconel® on request.
- Product Form
- Round bar, drawn, peeled or forged
- Diameter Range
- approx. 5 – 550 mm*
- Cutting
- Mill & custom lengths
- Certificate
- 3.1 mill certificate (EN 10204)
- Certification
- AS/EN 9100 & AS/EN 9120
- On Request
- Aluminium & nickel alloys (e.g. Inconel®)
*Guide values, dependent on grade and stock availability — see the dimensions table for details.
Five Grades Backed by Deep Stock and Extensive Experience
These five materials form part of our core round bar programme and are regularly available from stock or on short lead time.
Martensitic precipitation-hardening chromium-nickel-copper steel with high strength combined with good corrosion resistance and toughness. Typical application: landing gear and structural components in aerospace.
The classic among precipitation-hardening stainless steels — high strength, good toughness and corrosion resistance across a broad heat-treatment range. Widely used in aerospace, mechanical engineering and defence.
High-strength precipitation-hardening stainless steel with particularly good toughness at high strength — suited to highly stressed, safety-critical components in aerospace and defence.
Low-alloy chromium-molybdenum-vanadium steel, readily weldable and heat-treatable, with high strength at low weight. Proven in frame construction, landing gear and structural components.
Low-alloy quenched and tempered steel with a balanced combination of strength, toughness and weldability. One of our core programmes — Europe's largest range of stocked dimensions as 25CrMo4 tube, complemented by round bar from stock.
Round Bar Grades & Specifications
An excerpt from our round bar supply programme. Grades not listed and special dimensions are gladly sourced on request.
| German Grade (Werkstoffnummer) | International Grade | Specifications |
|---|---|---|
| 1.2379 | X153CrMoV12 / D2 / Z160CDV12 | EN ISO 4957 / AFNOR / AISI |
| 1.3505 | 100Cr6 / 100C6 / SAE 52100 | EN683-17 / AIR9160C / AMS6440 / MIL-S-7420 |
| 1.4044 | SAE 431 / FE-PM42 | MIL-S-18732 / DIN65038 / AIR9160C |
| 1.4301 | SAE 304 | EN10088-3 / AMS5639 / AMS5857 |
| 1.4305 | AISI 303 / Z8CNF18-9 | AMS5640 / EN 10088 / AFNOR |
| 1.4306 | AISI 304L / Z3CN19-11 | EN 10088-3 / AMS5647 / AFNOR |
| 1.4534 | PH13-8Mo / FE PM 67 | DIN65038 / EN3357 / EN3358 / EN3470 / EN3486 / AMS5629 |
| 1.4542 | 17-4PH | EN10088-1 |
| 1.4544 | SAE 321 / Z6CNT18-10 | DIN65038 / EN2462 / AMS5645 / AMS5689 |
| 1.4545 | 15-5PH / FE-PM64 | DIN65038 / AMS5659 (H1100) / EN2815 / EN2816 |
| 1.4546 | SAE 347 / FE-PA16 | DIN65038 / AMS5646 / QQ-S763 class 347 cond A |
| 1.4548 | 17-4PH / FE-PM61 | DIN65038 / EN2539 / AMS5622 |
| 1.4944 | A286 / FE-PA92 | DIN65038 / EN2171 / AMS5713 / AMS5732 / AMS5737 |
| 1.5815 | 35NiCr6 / 35NC6 | EN10083 / AIR9160C |
| 1.6604 | 30CrNiMo8 / FE-PL74 | DIN65038 / EN2471 |
| 1.6747 | 30NiCrMo16 / 30NCD16 | EN10083 / AIR9160C |
| 1.7214 | 25CrMo4 / 25CD4(S) | DIN65038 / AIR9160C / EN2208 / EN2206 |
| 1.7218 | 25CrMo4 / 25CD4(S) | DIN65038 / AIR9160C / EN2208 / EN2206 |
| 1.7734 | 15CDV6 / FE-PL52 | DIN65038 / AIR9160C / EN2213 / EN2214 / EN2249 / EN2252 / ASNA3120 / ASNA3192 / ASNA3193 |
| 1.7784 | H11 / FE-PM13S | DIN65038 / AIR9160C / EN2269–EN2272 / MIL-S-47262 / AMS6485 / AMS6487 |
Additional grades as well as aluminium, nickel and titanium alloys (e.g. Inconel®) available on request.
Guide Values for Diameter & Supply Lengths
Placeholder data — please replace with binding values from the supply programme. Structure and presentation can be carried over unchanged.
| Form | Diameter Range | Standard Length | Tolerance |
|---|---|---|---|
| Drawn / peeled | 5 – 100 mm | 3,000 – 6,000 mm | h9 / h11 (on request) |
| Hot-rolled | 16 – 250 mm | 3,000 – 6,000 mm | per EN 10060 |
| Forged | 150 – 550 mm | per drawing | machining allowance by agreement |
| Cut-to-length | full range | custom length from 10 mm | ±1 mm (saw cut) |
Note: Available diameters and lengths vary by grade and current stock levels. For binding dimensions and short lengths at special terms, 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.
Sawing
Cutting bars up to 550 mm diameter to your required length.
Peeling & Turning
Precise surface and dimensional machining to drawing.
Heat Treatment
Quenching, tempering and ageing to customer specification.
Material Testing
Chemical analysis, hardness testing, ultrasonic inspection.
Traceability from Heat to Delivery
How We Ensure the Quality of Every Delivery
Every heat of round bar goes through a defined inspection programme before release — from visual inspection to independent laboratory testing.
100% Dimensional & Visual Inspection
Every bar 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.
Round Bar — Questions & Answers
Which round bar grades does Tennant Metall regularly hold in stock?
Our core programme includes 1.4545 (15-5PH), 1.4542/1.4548 (17-4PH), 1.4534 (PH13-8Mo), 1.7734 (15CDV6) and 1.7214/1.7218 (25CrMo4), among others. We also stock 1.4044, 1.4544 and 1.6604 as secondary grades. See the full overview in the grade table above.
Up to what diameter can cut lengths be supplied?
We supply cut lengths of round bar up to 550 mm diameter to your required length, including a 3.1 mill certificate to EN 10204.
Does Tennant Metall also supply special grades or special dimensions?
Yes. Beyond the listed standard programme, we source unusual materials and dimensions on request — please speak to your account manager.
Does Tennant Metall also supply round bar in aluminium or nickel-base alloys such as Inconel?
Yes. We source and stock aluminium alloys (e.g. 6061, 7075) as well as nickel-base alloys such as Inconel® on request.
What certifications apply to round bar 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 ·
