41Cr4 | Equivalent Materials & Metal Specifications

41Cr4 steel is a robust alloy that surpasses C45 steel in hardenability, making it apt for surface hardening techniques. It has superior mechanical properties, including toughness and wear resistance, which make it pivotal in machinery manufacturing. This article explores the technical specifications, properties, and applications of 41Cr4 steel. It highlights its versatility and relevance in producing mechanical parts for medium load and speed applications.

Overview

41Cr4/1.7035 Steel, with its notable mechanical properties such as enhanced toughness, plasticity, and wear resistance, holds a significant place in the machinery manufacturing industry and is commonly provided in a quenched and tempered state. This steel grade’s machinability and tolerance requirements are precise and critical to its performance.

Heat treatment techniques such as quenching and tempering processes enhance the mechanical properties of 41Cr4/1.7035 steel. In comparison with other steel grades, it exhibits superior hardenability and is highly amenable to surface hardening methods, including induction hardening and flame hardening. These methods increase the steel’s surface hardness, thereby improving wear resistance while maintaining a tough core.

The machinability of this steel grade is also of considerable importance. A careful balance between hardness and machinability is essential to ensure that the steel can be efficiently processed into final components. The steel’s high machinability, coupled with its precise tolerance requirements, contribute to its widespread use in the machinery manufacturing industry.

41Cr4 is a steel for quenching and tempering recommended for components with strength requirements lower than the steel 42CrMo4

Reference standard: DIN EN ISO 683-2 standard (formerly EN 10083-3).

Equivalent Materials

Equivalents to this material are found in several international standards, including GB 3077:40Cr in China, ASTM A29:5140 in the USA, JIS G4104:SCr440 in Japan, and BS970:530M40 in the UK. A comparative analysis of these standards is integral to material selection.

The material’s characteristics can be broken down as follows:

1. GB 3077:40Cr from China is known for its high wear-resistance and high-temperature strength.
2. ASTM A29:5140 from the USA has a good balance of strength and ductility, making it an excellent choice for applications requiring high stress.
3. JIS G4104:SCr440 from Japan is renowned for its high toughness and impact resistance.
4. BS970:530M40 from the UK possesses high tensile strength and good wear resistance.

The performance comparison of these materials offers various substitution options. However, the application considerations for these materials differ due to their varying mechanical properties. Therefore, understanding these differences is critical when considering substituting one steel for another in specific applications. These materials’ suitability for a particular application should be confirmed by thorough testing and analysis.

Ultimately, the selection of equivalent materials should be guided by the intended application’s specific requirements.

a See the sources in Bibliography

b US steel listed in ASTM A 830 and in UNS (if the steel number is given in brackets, then the steel has only a UNS number).

c European steel listed in EN 10083–3 and in the “Stahl-Eisen-Liste” (if the steel number is given in parentheses/brackets, the steel is only listed in the “Stahl-Eisen-Liste”).

d Japanese Industrial Standard.

e Chinese National Standard.

f i = identical steel to ISO steel grade; n = steel grade with closer match of composition, but not identical; w = wider match.

Characteristics

Characteristics of DIN41Cr4/1.7035 material include impressive toughness, plasticity, and wear resistance, making it a preferred choice in the machinery manufacturing industry. This steel alloy outshines its counterparts in terms of hardenability, achieved through heat treatment techniques such as quenching and tempering.

When compared with other steel alloys like C45 steel, DIN41Cr4/1.7035 exhibits superior mechanical properties and resistance to wear and tear, making it a viable choice for industrial applications that require robustness and durability. It is particularly suited for surface hardening methods, including high-frequency quenching and flame quenching.

One crucial aspect of DIN41Cr4/1.7035 is its potential to undergo carbonitriding treatment. This surface modification technique enriches the material’s surface layer with carbon and nitrogen, significantly enhancing its hardness and wear resistance.

In terms of industrial applications and case studies, DIN41Cr4/1.7035 is notably used in the manufacturing of mechanical parts for medium load and medium-speed applications such as gears, shafts, and steering knuckles. Its comprehensive set of properties, combined with adaptable heat treatment techniques, positions it as a material of choice for diverse industrial applications.

Uses

In the realm of machinery manufacturing, DIN41Cr4/1.7035 material is frequently sought after for the production of diverse mechanical parts due to its robust mechanical properties and exceptional wear resistance. This steel grade is renowned for its versatility in various manufacturing applications, including the production of gears, shafts, and steering components.

Heat Treatment Methods: The material’s mechanical properties can be optimized through the application of various heat treatment methods. The commonly used methods include quenching and tempering, which enhance its toughness, plasticity, and wear resistance.

Surface Hardness: Through processes like carbonitriding treatment, the surface hardness of DIN41Cr4/1.7035 can be significantly improved. This increases the material’s resistance to wear and extends the lifespan of the manufactured parts.

Carbonitriding Treatment: This method is often applied to enhance wear resistance and surface hardness. During this treatment, the material is heated in a carbon-rich environment, which results in a hard, wear-resistant surface layer.

Manufacturing Applications: The improved mechanical properties make DIN41Cr4/1.7035 an ideal choice for manufacturing a wide range of mechanical parts. Its applications span across industries, from automotive to heavy machinery, where durability and resistance to wear are paramount.

Physical Properties

Physical properties of DIN41Cr4/1.7035 material, such as density, hardness, and melting point, play a vital role in determining its suitability for various industrial applications. These properties, coupled with the material’s thermal conductivity, ensure efficient heat dissipation during processing and operation, contributing to its overall performance and durability.

Moreover, the DIN41Cr4/1.7035 alloy exhibits commendable corrosion resistance, which makes it a preferred choice in environments susceptible to corrosive elements. This characteristic reduces maintenance requirements and extends the material’s service life. In terms of magnetic properties, DIN41Cr4/1.7035 possesses a ferromagnetic nature, which can be advantageous in certain applications, such as electric motors and transformers.

The material’s fatigue strength and weldability also contribute significantly to its widespread use. Fatigue strength represents the material’s ability to withstand cyclic stress, while weldability refers to its compatibility with various welding processes without losing its fundamental properties. These characteristics make DIN41Cr4/1.7035 a versatile material, suitable for a wide range of applications.

With the understanding of these physical properties, we can now proceed to analyze the mechanical properties of DIN41Cr4/1.7035, further elucidating its application potential in various industries.

Mechanical Properties

Mechanical properties of DIN41Cr4/1.7035, such as toughness, plasticity, and wear resistance, make it a highly desirable material for various industrial applications. These properties can be enhanced or tailored by applying various heat treatment methods.

1. Quenching and Tempering: This method refines the grain structure, improving the toughness and strength. The resulting surface hardness is suitable for many wear-resistant applications.
2. Normalizing: This method refines the ferrite-pearlite grain size, leading to improved strength and toughness.
3. Annealing: This method is used to remove stresses, improve machinability, and increase hardness.
4. Surface Hardening: This method focuses on enhancing only the surface hardness, leaving the core material with its original properties.

The supply form of DIN41Cr4/1.7035 is typically quenched and tempered, covering a size range as per ASTM A29 standards. The initial forging temperature is 1150℃, decreasing to 850℃. The appropriate forging temperature and slow cooling post-forging contribute to the material’s desirable properties.

This detailed, technical, and analytical approach to understanding DIN41Cr4/1.7035’s mechanical properties, heat treatment methods, and forging temperature ensures its optimal use in industrial applications.

a Rp0.2: 0.2% – proof stress

   Rm: tensile strength, A: percentage elongation after fracture, Z: reduction in cross-section on fracture.

   KV2: impact strength of lontitudinal charpy V-notch test pieces with striker radius 2mm; average of 3 individual values, no individual value shall be lower than 70% of the minimum average value.

b These values are optional and can be agreed at the time of enquiry and order.

Chemical Composition

The specific and controlled chemical composition of DIN41Cr4/1.7035, including elements like carbon, manganese, and sulfur, contributes significantly to its desired mechanical properties. The precise blend of these elements ensures optimum hardness, corrosion resistance, and impact toughness.

Microstructure analysis reveals a fine-grain structure, a testament to its robust heat treatment techniques. These techniques, including quenching and tempering, significantly influence the hardness and toughness of the steel. Furthermore, surface hardening methods such as carburizing and nitriding can be employed to enhance the surface hardness and wear resistance of this steel grade.

c Maximum values unless otherwise stated.

d Steels may be supplied with a lower sillicon content. In thi case, alrernative means of deoxidation shall be used.

The table above provides details of the crucial elements in DIN41Cr4/1.7035 steel. Each element plays a vital role in determining the characteristics of the steel. For instance, carbon enhances hardness and strength, manganese improves hardenability and wear resistance, and chromium boosts toughness and corrosion resistance. Thus, the controlled chemical composition of DIN41Cr4/1.7035 is pivotal in achieving the desired mechanical properties and performance in various applications.

Redstone Manufacturing does not guarantee the accuracy of the information contained within the above table. Some metrics have been rounded, converted, or estimated. Consult a qualified engineer to confirm the accuracy of the information contained on this webpage.