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This alloy responds well to heat treatment. Its chromium content provides good hardenss penetration, and the molybdenum imparts uniformity of hardness and high strength. In the annealed condition it machines at 110 sfm. Other desirable properties include good wear resistance, excellent toughness and good ductility in the quenched and tempered condition.
| Shape |
Round, Hexagon, Flats |
| Grade |
4140 |
| Tolerance |
Meets cold finished carbon steel bar manufacturing tolerances |
| Application |
Highly stressed parts, or parts subject to severe wear. |
Rounds |
All popular sizes |
| Hexagon |
All popular sizes |
| Flats |
All popular sizes |
|
Round |
For best delivery lengths should be specified as 11'/13'. |
| Hexagon |
For best delivery lengths should be specified as 11'/13'. |
| Flats |
For best delivery lengths should be specified as 11'/13'. |
|
| Rounds, Hexagon, Flats |
Standard "as drawn" finish |
| Rounds, Hexagon, Flats |
Ground and Polished |
| Rounds, Hexagon, Flats |
Turned Ground and Polished |
| Rounds, Hexagon, Flats |
Turned and Polished |
| Rounds, Hexagon, Flats |
Rough Turned |
|
| Carbon |
0.38/0.43 |
| Manganese |
0.75/1.00 |
| Phosphorus |
0.035 (Max) |
| Sulphur |
0.04 (Max) |
| Silicon |
0.15/0.35 |
| Chromium |
0.80/1.10 |
| Molybdenum |
0.15/0.25 |
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