High-Carbon Engineering Steel For Demanding Applications
EN 9 / 070M55 is a medium-carbon engineering steel designed for applications requiring a practical combination of strength, hardness and wear resistance.
Available in: Round Bars | Flats | Blocks | Custom Sizes
Performance Where It Matters
Provides Useful Strength For A Wide Range Of Engineering Components.
Suitable For Applications Where Components Experience Repeated Mechanical Wear.
Can Be Hardened And Tempered To Achieve Application-specific Mechanical Properties.
Can Be Machined In Suitable Supply Conditions Before Subsequent Heat Treatment.
EN 9 Can Be Flame Or Induction Hardened To Develop A Harder, Wear-Resistant Surface.
Used Across General Engineering, Automotive And Industrial Component Applications.
EN 9 — Technical Specifications
| Property | Specification |
|---|---|
| Material | EN 9 |
| BS Designation | 070M55 |
| Steel Type | High-Carbon Unalloyed Engineering Steel |
| Carbon (C) | 0.50–0.60% |
| Silicon (Si) | 0.10–0.40% |
| Manganese (Mn) | 0.50–0.90% |
| Phosphorus (P) | 0.050% Max |
| Sulphur (S) | 0.050% Max |
| Available Forms | Round Bars, Flats, Blocks* |
| Supply | Full Length / Cut-to-Size |
| Element | Composition |
|---|---|
| Carbon (C) | 0.50 – 0.60% |
| Silicon (Si) | 0.10 – 0.40% |
| Manganese (Mn) | 0.50 – 0.90% |
| Phosphorus (P) | 0.05% Max. |
| Sulphur (S) | 0.05% Max. |
| Iron (Fe) | Balance |
Where En 9 Is Used
En 9 Is Used For A Variety Of General Engineering And Wear-resistant Components, Including:
Gears & Sprockets
Shafts & Axles
Crankshafts
Camshafts
Bushes
Pins & Mechanical Components
Machine Tools
Knives & Blades
Hammers
Pulleys & Cams
Its Use In Gears, Camshafts And Surface-hardened Components Is Specifically Documented In Engineering Steel
Control The Material. Control The Performance.
En 9 Can Undergo Several Heat-treatment Processes Depending On The Required Mechanical Properties.
| Treatment | Typical Temperature |
|---|---|
| Annealing | 680–710°C |
| Normalizing | Approx. 810–840°C |
| Hardening | Approx. 820–840°C |
| Tempering | Approx. 550–660°C |
Available to match your requirement
Round bars
Suitable for shafts, pins, gears and machined components.
Flat bars
Suitable for tooling, fabrication and engineered components.
Blocks
For machining and component manufacturing requirements.
Custom sizes
Material can be prepared according to customer dimensional requirements.
Choose the condition you need
As rolled
As forged
Normalized
Hardened & tempered
Full length
Cut-to-size
The exact supply condition should be specified according to the required application and material
Share your requirement with our team and get the right steel solution for your application.
