Medium-Carbon Steel For Engineering Applications
EN 8D is a medium-carbon steel grade offering a practical combination of strength, toughness, machinability, and wear resistance for demanding engineering and industrial components.
Available Forms: Round Bars, Blocks
Key Properties
| Property | Specification |
|---|---|
| Material | EN 8D |
| Steel Type | Medium-Carbon Engineering Steel |
| Carbon (C) | 0.40–0.45% |
| Manganese (Mn) | 0.70–0.90% |
| Silicon (Si) | 0.05–0.35% |
| Phosphorus (P) | 0.060% Max* |
| Sulphur (S) | 0.060% Max* |
| Available Forms | Round Bars, Flats, Blocks |
| Supply | Full Length / Cut-to-Size |
|
Element |
Range / Maximum |
|---|---|
|
Carbon (C) |
0.40 – 0.45% |
|
Silicon (Si) |
0.05 – 0.35% |
|
Manganese (Mn) |
0.70 – 0.90% |
|
Phosphorus (P) |
0.060% Max |
|
Sulphur (S) |
0.060% Max |
|
Iron (Fe) |
Balance |
Where EN 8D Is Used
Shafts & Axles
For rotating and load-bearing mechanical components.
Gears & Pinions
Suitable for selected power-transmission applications.
Studs & Bolts
Used for engineered fastening components.
Bushes & Pins
Suitable for machined components requiring strength and durability.
Sprockets
Used in mechanical power-transmission systems.
Machine Components
For a wide range of general engineering requirements.
EN 8D applications reported in technical and supplier sources include shafts, axles, studs, pinions, sprockets, pump shafts, gears and other machine components.
EN 8D can be heat treated to achieve the required combination of strength, hardness and toughness for different engineering applications.
| Heat Treatment | Typical Temperature | Purpose |
|---|---|---|
| Normalising | 820–860°C | Refines grain structure and improves uniformity |
| Annealing | 800–850°C | Reduces hardness and improves machinability |
| Hardening | 820–860°C | Increases hardness and strength |
| Tempering | 550–650°C | Reduces brittleness and improves toughness |
Round bars
Suitable for shafts, pins, axles and machined components.
Blocks
Suitable for machining and component manufacturing.
Custom sizes
Material can be supplied in customised sizes according to requirements.
Reliable Steel Supply, From Stock To Delivery
TSI Metals is structured to simplify industrial steel sourcing—from understanding the material requirement to preparing and supplying the required steel.
Our Supply Chain Process
01 — Requirement
Understand the required grade, size, form, quantity, and delivery location.
02 — Material Sourcing
Identify and arrange the required EN 8D material through the supply network.
03 — Stock & Quality Check
Verify material availability and required specifications before dispatch.
04 — Cutting & Preparation
Provide full-length or customised cut-to-size material as required.
05 — Packing & Dispatch
Prepare the material for safe transportation and dispatch.
06 — Delivery
Coordinate supply to the required delivery location.
3000+ MT Stock
Substantial inventory to support diverse industrial steel requirements.
20+ Bandsaw Machines
Cutting capability for accurate and consistent material preparation
Share your requirement with our team and get the right steel solution for your application.
