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EN24 Steel Hardness: Unveiling the Secrets of Strength

Welcome to a comprehensive exploration of EN24 steel hardness! In this detailed guide, we will unravel the mysteries behind the hardness of EN24 steel, a high-performance alloy that has been trusted for over a century. Because of its special combination of qualities, especially its remarkable toughness, EN24 steel is favored in a wide range of sectors. Thus, you’ve come to the correct spot if you’re keen to learn about the nuances of EN24 steel hardness and its importance.

What Sets EN24 Steel Apart?

Before delving into the realm of hardness, let’s first establish what makes EN24 steel a standout performer. The composition of 1.5% nickel, 1% chromium, and 0.2% molybdenum accounts for its remarkable properties. With heat treatment, this alloy can have a wide range of tensile strengths, making it a reliable and versatile material for many uses.

EN24 steel hardnessDecoding EN24 Steel Hardness

EN24 steel’s hardness is one of its most notable attributes. When in its heat-treated condition, it combines high tensile strength with remarkable resistance to shock. What’s more, EN24 steel retains good ductility even in low-temperature environments, ensuring its adaptability to diverse applications. In its annealed state, EN24 steel exhibits a machinability of approximately 53% of that of mild steel (070M20). In the EN24T condition, this value is around 35%-40% of mild steel. This means that EN24 steel can be effectively machined to meet specific requirements.

Applications of EN24 Steel Hardness

EN24 steel’s excellent hardness finds applications in various industries, such as manufacturing, aerospace, and automotive. Some notable uses include:

  • Power transmission gears require maximum hardness.
  • Cranks, axles, propellers, and gearbox shafts demand high tensile properties.
  • Connecting rods, special cranks, and other components need to balance stiffness with toughness.
  • Bolts, screwed parts, stub axles, and swivel arms where toughness is critical.
  • Components for the plastics and rubber molding industry, like molds, hob retaining rings, and stop pins.
  • Structural components with high tensile strength requirements.

Heat Treatment and Hardening

EN24 steel can undergo various heat treatment processes, including conventional hardening and tempering, plasma nitriding, nitriding, case hardening, carburizing, and more. Achieving specific hardness levels depends on factors like component size and shape. For instance, hardening and tempering involve heating the steel to 830-850°C and then quenching it in oil.

Mechanical Properties of EN24 Steel

The mechanical properties of EN24 steel vary based on its condition. For example, in the ‘T’ condition, it exhibits tensile strength ranging from 850-1000 N/mm², while in the ‘Z’ condition, it reaches up to 1550 N/mm².

Exploring EN24’s Rich History

EN24 steel has a history dating back over a century, with its roots in the steel mills of Sheffield. It was initially produced as a nickel chrome steel in the late 19th century. Over time, numerous steel producers worldwide developed their versions of this high-tensile alloy steel, with subtle composition differences.

Finding EN24 Steel Equivalents

Many countries created their equivalents to EN24, such as 4340 in the USA, 34CrNiMo6 in Germany, and 34NiCrMo8 in France. These foreign equivalents catered to local demands with slight variations in composition.

The EN24 Legacy

EN24 steel was officially recognized in 1916 under the British Engineering Standards Association (BESA) as ‘E.S.C. 1 ½ PER CENT NICKEL-CHROME STEEL.’ It later became part of the British Standards Institution (BSI) and saw a name change to 817M40 in 1970.

Conclusion

EN24 steel’s hardness is a key attribute that contributes to its wide-ranging applications. Understanding its properties and heat treatment options is essential when considering this alloy for your projects. Whether you’re in the automotive, aerospace, or manufacturing sector, EN24 Steel’s legacy and versatility make it a top choice for high-performance applications.

FAQs

What makes EN24 steel hardness unique?

EN24 steel uniquely combines high tensile strength with excellent shock resistance, making it suitable for applications requiring both strength and toughness.

Are there international equivalents to EN24 steel?

Yes, EN24 steel has international equivalents, such as 4340 in the USA, 34CrNiMo6 in Germany, and SNCM447 in Japan, with slight compositional variations.

How is EN24 steel heat-treated to achieve specific hardness levels?

EN24 can be heat-treated through various processes, including hardening and tempering, plasma nitriding, case hardening, carburizing, and more, to achieve desired hardness levels.

What are the typical applications of EN24 steel in the manufacturing sector?

EN24, especially in the EN24T condition, is used for power transmission gears, crankshafts, axles, connecting rods, and structural components requiring high tensile strength.

How has the steel’s nomenclature evolved over the years?

EN24’s nomenclature evolved from a unique brand name in the late 19th century to becoming part of British standards as E.S.C. 1 ½ PER CENT NICKEL-CHROME STEEL in 1916. In 1970, it was renamed 817M40.

If you need a high-quality supplier, don’t hesitate. OTAI Special Steel is a steel supplier known for its service and quality.

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EN24 Steel Suppliers: Unveiling the Source of Your Toughest Materials

In the world of manufacturing and engineering, the quest for the ideal materials to create strong, reliable, and durable products is never-ending. EN24 steel is one such material, celebrated for its exceptional properties. This comprehensive guide explores EN24 steel, delving into its composition, applications, heat treatment, and, most importantly, where to source it. If you’re looking for EN24 steel suppliers, you’ve come to the right place.

What is EN24 Steel?

EN24 steel has a lengthy history that dates back more than a century. EN24 is the designation for a nickel, chromium, and molybdenum alloy steel. Its chemical composition includes approximately 1.5% nickel, 1% chromium, and 0.2% molybdenum, which explains why it is so highly sought after in a variety of industries.

The Quest for Equivalents

EN24’s popularity has led to the production of similar alloy steels worldwide, each with subtle differences in composition. Here are some equivalents from different countries:

  • USA: 4340 (AISI/SAE)
  • Germany: 34CrNiMo6 (DIN)
  • France: 1.6582 (Werkstoff)
  • Sweden: 34NiCrMo8/35NCD6 (SIS)
  • Spain: 14.2541 (UNE)
  • Japan: SNCM447 (JIS)
  • Aerospace Industry: S95/S119

These equivalents showcase the global demand for high-tensile, nickel-chrome-molybdenum steel like EN24.

Properties and Applications

EN24’s heat-treated condition offers an excellent combination of high tensile strength and shock resistance. It’s easily workable, whether forged or stamped. Some of its diverse applications include power transmission gears, cranks, axles, propeller and gearbox shafts, connecting rods, bolts, and structural components. It’s even utilized in the plastics and rubber molding industry for molds and related parts.

EN24 Steel Suppliers

Now, the crucial question: where can you find reliable EN24 steel suppliers? Several companies specialize in providing this high-quality material. When selecting a supplier, ensure they offer EN24 in various forms, including round bars and flat sections. Moreover, consider their heat treatment services, as different processes are available, such as hardening and tempering, plasma nitriding, nitriding, case hardening, and more.

en24 steel suppliers

Conclusion

EN24 steel and its equivalents have a rich history and find application in a wide array of industries. Choosing the right supplier for your EN24 steel needs is paramount for ensuring product quality and performance.

EN24 steel and its equivalents have a rich history and find application in a wide array of industries. Choosing the right supplier for your EN24 steel needs is paramount for ensuring product quality and performance. OTAI Special Steel is a supplier of high-standard material quality and services.

FAQs

1. What is the composition of EN24 steel?

Component Elements Properties Metric US/Imperial
Carbon, C 0.35 – 0.45 % 0.35 – 0.45 %
Chromium, Cr 0.90 – 1.40 % 0.90 – 1.40 %
Silicon, Si 0.10 – 0.35 % 0.10 – 0.35 %
Manganese, Mn 0.45 – 0.70 % 0.45 – 0.70 %
Molybdenum, Mo 0.20 – 0.35 % 0.20 – 0.35 %
Nickel, Ni 1.30 – 1.80 % 1.30 – 1.80 %

2. Can EN24 steel be welded?

While EN24 can be welded when it is annealed, it is not advised to weld EN24T or higher tensile variations because of the possibility of cracking

3. What are some applications of EN24 steel?

EN24 steel is used for power transmission gears, cranks, axles, propellers, gearbox shafts, connecting rods, bolts, structural components, and parts in the plastics and rubber molding industry.

4. Are there any heat treatment options for EN24 steel?

Yes, EN24 can undergo various heat treatment processes, including hardening and tempering, plasma nitriding, nitriding, case hardening, carburizing, nitrocarburizing, induction hardening, flame hardening, and stress relieving.

5. How does EN24 compare to its equivalents in different countries?

EN24’s equivalents from various countries, such as 4340 in the USA and 34CrNiMo6 in Germany, have similar compositions and properties, making them suitable for comparable applications.

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EN24 Steel Equivalents: Understanding the Alternatives

When it comes to steel, the quest for the perfect alloy is never-ending. EN24, a well-established steel grade, has served various industries for over a century. But what if you’re looking for an equivalent? Perhaps you need a different option for your specific application? This blog delves into the realm of EN24 steel equivalents.

What Is EN24 Steel?

EN24 is a sturdy steel alloy with high tensile strength, excellent ductility, and seismic resistance, making it the preferred choice for various industries.

EN24 Steel Equivalents

Chemical composition of EN24

Component Elements Properties Metric US/Imperial
Carbon, C 0.35 – 0.45 % 0.35 – 0.45 %
Chromium, Cr 0.90 – 1.40 % 0.90 – 1.40 %
Silicon, Si 0.10 – 0.35 % 0.10 – 0.35 %
Manganese, Mn 0.45 – 0.70 % 0.45 – 0.70 %
Molybdenum, Mo 0.20 – 0.35 % 0.20 – 0.35 %
Nickel, Ni 1.30 – 1.80 % 1.30 – 1.80 %

EN24 Steel Equivalents 

Steel knows no borders, and various countries around the world have developed their own versions of nickel-chrome-moly steel to serve their industries. Below are some of the EN24 equivalents from around the world:

  • USA (AISI): 4340
  • Germany (DIN): 34CrNiMo6
  • France (AFNOR): 34NiCrMo8 / 35NCD6
  • Sweden (SIS): 14.2541
  • Spain (UNE): F1.272
  • Japan (JIS): SNCM447
  • China (GB/T): 34Cr2Ni2Mo

These international equivalents cater to the diverse needs of different regions, offering similar properties to EN24.

EN24 Steel Properties and Applications

EN24, particularly in the ‘T’ condition, is renowned for its high tensile strength and shock resistance. It is also easy to machine and can be forged or stamped without difficulty. This versatility makes it an excellent choice for:

  • Power transmission gears
  • Cranks, axles, and shafts
  • Connecting rods
  • Bolts and screws
  • Parts in the plastics and rubber molding industry
  • Structural components requiring high tensile strength

Whether it’s a high-stress gear or a critical axle, EN24 can handle the pressure.

Typical Mechanical Properties for EN24

Condition Tensile N/mm² Yield N/mm² Elongation (%) Izod KCV J Hardness Brinell
T 850-1000 650 13 35 248-302
U 925-1075 755 12 42 269-331
V 1000-1150 850 12 42 293-352
W 1075-1225 940 11 35 311-375
X 1150-1300 1020 10 28 341-401
Y 1225-1375 1095 10 21 363-429
Z 1550 1235 5 9 444

Heat Treatment and Machinability

EN24 can undergo various heat treatment processes, such as hardening, tempering, nitriding, and more. It’s machinable both in the annealed condition and when hardened and tempered, offering flexibility in manufacturing.

Welding and Stress-relieving

While EN24 can be welded in the annealed state, welding it in higher tensile conditions isn’t recommended due to the potential impact on its properties. Stress relieving can be beneficial after welding or heavy machining to ensure stability.

The History of EN24

EN24 boasts a rich history dating back to the late 19th century. Initially produced as nickel-chrome steel in Sheffield, various steel mills created their versions with unique names. However, during World War II, efforts to standardize steel specifications led to the birth of EN24, then known as ‘ESC 1 ½ percent NICKEL-CHROME STEEL.’ In 1970, it was officially designated as 817M40.

EN24’s journey highlights its enduring presence and continual adaptation to industry needs.

In your quest for the perfect steel alloy, understanding EN24 and its equivalents opens the door to a world of options. Whether you choose the classic EN24 or opt for one of its international counterparts, rest assured that these alloys have a strong global legacy and a promising future in various applications. If you need any help, please feel free to contact us!

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