| Quality | 42CrMo4 |
| Category | Special steel, carbon steel |
| Standard ref. |
EN 10083 |
| Werkstoff nr. | 1.7225 |
Description
42CrMo4 is the most used among tempered steel thanks to its great hardenability, good strenght, forgeability and workability to the tools machinery. It is normally supplied in hot rolled, peeled, forged and turned bars. It is used to produce gears, axles and tie rod.
Chemical composition 42CrMo4 (%)
| C | Mn | P | S | Cr |
Si | Mo |
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| min | max | min | max | max | max | min | max | max | min | max |
| 0,38 | 0,45 | 0,60 | 0,90 | 0,025 | 0,035 | 0,90 | 1,20 | 0,40 | 0,15 | 0,30 |
Mechanical characteristicse 42CrMo4
| Hot rolled normalized (Ø of the specimen in mm) |
||||||
| ≤ 16 | > 16 ≤ 40 | > 40≤ 100 | > 100 ≤ 160 | > 160 ≤ 250 | ||
| Yield Limit, Rp0,2 (MPa) min | 900 | 750 | 650 | 550 | 500 | |
| Tensile Strength Rm (MPa) |
min | 1100 | 1000 | 900 | 800 | 750 |
| max | 1300 | 1200 | 1100 | 950 | 900 | |
| Elongation A (%) min | 10 | 11 | 12 | 13 | 14 | |
| Resilience Kv (J) min | – | 35 | 35 | 35 | 35 | |
| Hardness HB | min | – | – | – | – | – |
| max | – | – | – | – | – | |
Matches table 42CrMo4
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Italiy (UNI)
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Europe (EN)
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Germany (DIN)
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France (AFNOR)
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United Kingdom (BS)
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USA (AISI/SAE)
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| 42CrMo4 | 42CrMo4 | 42CrMo4 | 42CD4 | 708M40 | A 829 4140 |
