EN9 (070M55) Engineering steel
EN9 (070M55) grade steel is a medium carbon steel with good tensile strength.
Although this grade is capable of through hardening by quenching and tempering , it is more commonly supplied in the untreated or normalised condition.
It possesses good wear resistance, but poor weldability.
Steel stock range
High Peak Steels stock offer EN9 (070M55) in round bar, flat bar and square bar.
Associated standards
UK Standard EN9 | European Grades C55, C60 | Werkstoff 1.0535 | SAE/AISI 1050
EN9 (070M55) Black
| Product | Min size | Max size |
|---|---|---|
 | 32mm dia | 280mm dia |
 | 40mm x 4mm | 100mm x 20mm |
 | 16mm | 50mm |
 |
EN9 (070M55) Bright
| Product | Min size | Max size |
|---|---|---|
| 25mm | 50mm |
| ||
| ||
|
EN9 (070M55) Chemical Composition
| C | Si | Mn | S | P | Cr | Ni | Mo | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.5 | 0.1 | 0.5 | |||||
| Max | 0.6 | 0.4 | 0.9 | 0.05 | 0.05 | 0.3 | 0.4 | 0.15 |
EN9 (070M55) Mechanicals
| Yield N/mm2 | 0.2% proof N/mm2 | UTS (Rm) N/mm2 | Elong (A) % | Red of Area (Z) % | Hardness HB | Impact Test (KV) J |
|
|---|---|---|---|---|---|---|---|
| Normalised (min) | 355 | 700 | 12 | 201 | |||
| Normalised (max) | 255 | ||||||
| Drawn (min) | 600 | 750 | 7 | ||||
| Drawn (max) | |||||||
| Quenched & Tempered to condition R (min) | 415 | 700 | 14 | 201 | |||
| Quenched & Tempered to condition R (max) | 850 | 255 |
EN9 (070M55) Typical applications
- Gears
- Cylinders
- Cams
- Sprockets