ETG® for technically complex parts and production processes
Our high-strength ETG® steels exhibit high strength and excellent machinability even in their as-delivered state. They are also characterized by high fatigue strength and wear resistance. The presence of manganese sulfide results in short-breaking chips and the properties of these steels show a high degree of uniformity across different production batches. Users benefit from longer tool lives and reduced machine downtimes.
Product range
ETG® steels are available in various grades, designs and dimensions:
| Steel category | Process | Size range mm | Tolerance |
| ETG® 88 | drawn, round | ≥ 5,0 – ≤ 20,5 | h 9 |
| > 20,5 – ≤ 64,0 | h 11 | ||
| > 64,0 – ≤ 114,3 | h 12 | ||
| ground, round | ≥ 5,0 – ≤ 100,0 | ≥ IT 6 | |
| ETG® 100 | drawn, round | ≥ 6,0 – ≤ 64,0 | h 11 |
| > 64,0 – ≤ 70,8 | h 12 | ||
| ground, round | ≥ 6,0 – ≤ 70,8 | ≥ IT 6 | |
| ETG® 88 | drawn, hexagonal | SW 13 – 27 | h 11 |
- Bar lengths: 3 - 6,5 m
- Colour coding end face: ETG® 88 white, ETG® 100 gold
- peeled or peeled / ground on request
- The common dimensions are available from stock
- The surface fi nish and surface quality class 3 (hex: QC 2) as per EN 10277-1
Chemical and mechanical properties
Chemical composition
ETG® 88/100, melt analysis by mass in %
| Element | C | Si | Mn | P | S |
| min. | 0,42 | 0,21 | 1,35 | - | 0,24 |
| max. | 0,48 | 0,30 | 1,65 | 0,04 | 0,33 |
The analysis corresponds to SAE 1144 and 44SMn28 (1.0762).
Piece analysis and melt analysis may vary according to EN 10087, table 2.
Mechanical properties
Typical values - static
| ETG® 88 | ETG® 100 | |||
| Dimensions | Ø | mm | 5,0 – 114,3 | 6,0 – 70,8 |
| Proof stress, drawn | Rp0,2 | N/mm2 | ≥ 685 | ≥ 865 |
| Proof stress, ground | Rp0,2 | N/mm2 | ≥ 685 | ≥ 800 |
| Tensile strength | Rm | N/mm2 | 800 – 950 | 960 – 1100 |
| Ultimate elongation | A5 | % | ≥ 7 | ≥ 6 |
| Reduction of area | Z | % | ca. 30 | ca. 20 |
| Elastic modulus | N/mm2 | ca. 200 000 | ca. 200 000 | |
| Tensile strength (transverse) | Rm | N/mm2 | ca. 600 | ca. 720 |
| Hardness | ||||
| HRC | ca. 28 | ca. 32 | ||
| HB 30 | ca. 280 | ca. 320 | ||
| Lateral shear strength | Ʈs | N/mm2 | ca. 510 | ca. 590 |
| Torsional shear strength | Ʈt | N/mm2 | ca. 440 | ca. 540 |
| Notched impact energy | AvRT | J | ca. 25 | ca. 10 |
Typical values - dynamic
| ETG® 88 | ETG® 100 | |||
| Tension/compression | σw | N/mm2 | ca. 350 | ca. 370 |
| Pulsating | σsch | N/mm2 | ca. 250 | ca. 270 |
| Reverse bending | σbw | N/mm2 | ca. 390 | ca. 420 |
| Torsional reversal | Ʈtw | N/mm2 | ca. 195 | ca. 225 |
| Torsional pulsating | Ʈsch | N/mm2 | ca. 345 | ca. 390 |
Downloads
