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QualityMaterial-No.Standard
38Cr21.7003DIN EN 10083-3Details
46Cr21.7006DIN EN 10083-3Details
34Cr41.7033DIN EN 10083-3Details
34CrS41.7037DIN EN 10083-3Details
37Cr41.7037DIN EN 10083-3Details
37CrS41.7038DIN EN 10083-3Details
41Cr41.7034DIN EN 10083-3Details
41CrS41.7039DIN EN 10083-3Details
25CrMo41.7218DIN EN 10083-3Details
25CrMoS41.7218DIN EN 10083-3Details
34CrMo41.7220DIN EN 10083-3Details
34CrMoS41.7226DIN EN 10083-3Details
42CrMo41.7225DIN EN 10083-3Details
42CrMoS41.7227DIN EN 10083-3Details
50CrMo41.7228DIN EN 10083-3Details
34CrNiMo61.6582DIN EN 10083-3Details
30CrNiMo81.6580DIN EN 10083-3Details
35NiCr61.5815DIN EN 10083-3Details
36NiCrMo161.6773DIN EN 10083-3Details
39NiCrMo31.6510DIN EN 10083-3Details
30NiCrMo16-61.6747DIN EN 10083-3Details
51CrV41.8159DIN EN 10083-3Details
20MnB51.5530DIN EN 10083-3Details
22MnB51.5528DIN EN ISO 683-2, DIN EN 10083-3Details
30MnB51.5531DIN EN 10083-3Details
38MnB51.5532DIN EN 10083-3Details
27MnCrB5-21.7182DIN EN 10083-3Details
33MnCrB5-21.7185DIN EN 10083-3Details
39MnCrB6-21.7189DIN EN 10083-3Details

Quenched and tempered steels for alloy steels according to DIN EN 10083-3

Quenched and tempered steels for alloyed steels, as defined in the DIN EN 10083-3 standard, are characterized by high strength and toughness and are therefore ideal for demanding applications in the mechanical engineering industry, in vehicle construction and for highly stressed mechanical components. Specific alloying elements such as chromium, nickel or molybdenum increase the performance of these steels so that they can withstand extreme stresses. The DIN EN 10083-3 standard specifies both the chemical composition and the mechanical properties of these steels in order to ensure consistently high quality for industrial applications.

Heat treatment conditions of quenched and tempered alloy steels

The performance and properties of quenched and tempered alloy steels depend largely on the heat treatment. The various heat treatment conditions specified in DIN EN 10083-3 offer customized solutions for different application requirements.

Untreated (code letter: without code letter or +U)
In the untreated state, the steels are not further heat-treated after rolling or forging and are therefore in a raw, soft state. This condition is often selected if the components are to be machined before final heat treatment. The soft structure facilitates milling, drilling or turning and allows precise machining without heavy tool wear.
Treated for shear strength (code letter: +S)
This condition is achieved by a specific heat treatment to optimize the shear strength of the material. For components that are exposed to shear stress, this condition ensures increased resistance to wear and mechanical stress. The targeted adjustment of the material hardness prevents cracks or deformation during shearing and thus improves the performance and service life of the component.
Soft annealed (code letter: +A)
In the soft annealed condition, the steels have a particularly high formability and are available in a structure that facilitates mechanical processing. Slow cooling after annealing reduces the hardness and homogenizes the microstructure. This condition is ideal for cold forming processes and also facilitates preparation for subsequent tempering, as the steels in the soft annealed condition have a uniform distribution of alloying elements.
Quenched and tempered (code letter: +QT)
The quenched and tempered condition is the result of a combination of hardening and tempering aimed at achieving high strength and toughness. Here, the steel is first heated and then rapidly cooled (hardened) to produce a particularly hard structure. Tempering is then carried out at moderate heat to achieve the desired toughness and reduce stresses. The quenched and tempered condition is ideal for highly stressed components such as gears, axles and drive shafts, which require both high hardness and a certain elasticity to withstand impact loads. This condition makes the alloyed heat-treated steels particularly resistant and durable.

Possible applications and advantages of alloyed heat-treatable steels

Alloyed heat-treatable steels that meet the requirements of DIN EN 10083-3 are used in demanding mechanical applications where a long service life and high load-bearing capacity are crucial. Their specific alloy composition enables adaptation to special requirements such as corrosion resistance, high abrasion resistance and resistance to fatigue. The selection of suitable heat treatment conditions allows the mechanical properties to be precisely adapted so that quenched and tempered alloyed steels can be used in various applications ranging from drive components and load-bearing structures to highly stressed machine components.

Thanks to standardization and the use of special heat treatment processes, these steels meet the highest requirements in terms of reliability, strength and durability, making them indispensable in many industries.

Quality Guide Download: Alloyed heat treatable steel

Behind this download you will find our ESB Quality Guide (data sheet) for alloyed heat-treatable steel.

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