Alloy steels
EU
35CD4 - 34CrMo4 - 1.7220
US
35CD4 steel is a nickel-chromium-molybdenum alloy offering excellent mechanical properties, high tenacity thanks to its hardness, significant resistance to both fatigue and shock. Suitable for machine parts under high stress, this steel is ideal for the automotive and aerospace industries, as well as other heavy-duty applications.
35CD4 steel - Available from stock
35CD4 steel is analloy steel used for high-quality mechanical engineering, suitable forapplications requiring good mechanical strength and tenacity at relatively hightemperatures. This steel belongs to the chrome moly (chromium molybdenum)family of steels, with unique properties thanks to its specific chemicalcomposition.
Here’s a technical breakdown of the typical properties and uses of35CD4 steel:
- Europe: 35CD4 | 34CrMo4 | 1.7220
- Europe: EN 10083-3 | EN 10132-3 | EN 10250-3 | EN 10263-4 | EN 10297-1 | EN 2446 | EN 2448 | EN 3329 | EN 3330 | SEW 550
- High strength and hardness: thanks to its composition, 35CD4 steel offers exceptional strength and hardness, especially once it has gone through appropriate heat treatment (quenching and tempering).
- Good hardenability: the presence of chromium and molybdenum in the steel ensures effective quenching even on thick diameters, guaranteeing uniform mechanical properties.
- Fatigue strength: 35CD4 steel is known for its fatigue strength, making it suitable for mechanical parts subject to cyclic stress.
- In order to optimiseits properties, 35CD4 steel requires an appropriate heat treatment, usuallyinvolving quenching and tempering. This process aims to adjust the steel’smicrostructure, maximising its strength, hardness and tenacity.
Properties
- High strength and hardness: thanks to its composition, 35CD4 steel offers exceptional strength and hardness, especially once it has gone through appropriate heat treatment (quenching and tempering).
- Good hardenability: the presence of chromium and molybdenum in the steel ensures effective quenching even on thick diameters, guaranteeing uniform mechanical properties.
- Fatigue strength: 35CD4 steel is known for its fatigue strength, making it suitable for mechanical parts subject to cyclic stress.
Standards and Designations
Heat treatment
- In order to optimiseits properties, 35CD4 steel requires an appropriate heat treatment, usuallyinvolving quenching and tempering. This process aims to adjust the steel’smicrostructure, maximising its strength, hardness and tenacity.
Special advantages
Conclusion
Application
35CD4 steel is used in a range of heavy-duty applications such as:
- Automobile and machine components, such as axles, connecting rods and drive shafts.
- Aerospace parts requiring good resistance to high temperatures and excellent mechanical strength.
- Gears, screws, bolts and other fasteners under high loads or temperatures.
- Components for the energy sector, such as wind turbines and equipment subject to temperature cycling and mechanical stresses.
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