EN354 is a high-strength, low-alloy steel known for its exceptional mechanical properties. This webpage will provide you with a comprehensive overview of EN354 steel, covering its country of origin, standards, chemical composition, mechanical and physical properties, equivalent grades, applications, heat treatment processes, size ranges, and available conditions.
Country, Standard, and Specification
EN354 steel, also known as 34CrNiMo6, is a grade of steel that conforms to the European EN 10083 standard. This standard is prevalent in European countries and provides specifications for various steel grades, including EN354.
Chemical Composition
EN354 steel is alloyed with a combination of elements to achieve its remarkable properties. The typical chemical composition of EN354 steel includes:
- Carbon (C): 0.30% to 0.38%
- Silicon (Si): 0.40%
- Manganese (Mn): 0.50% to 0.80%
- Chromium (Cr): 1.30% to 1.70%
- Nickel (Ni): 1.30% to 1.70%
- Molybdenum (Mo): 0.15% to 0.30%
- Phosphorus (P): 0.035% maximum
- Sulfur (S): 0.035% maximum
Mechanical & Physical Properties
EN354 steel is valued for its exceptional mechanical properties, making it suitable for a wide range of applications. Some of the key mechanical properties include:
- Tensile Strength: 1000-1300 MPa
- Yield Strength: 800-1100 MPa
- Elongation: 10%-15%
- Hardness: 248-302 HB
- Density: 7.85 g/cm³
Equivalent/Similar Steel Grades
EN354 steel is equivalent or similar to various steel grades in different international standards, including:
- BS: 817M40
- AISI/SAE: 4340
- DIN: 34CrNiMo6 (1.6582)
- Werkstoff No: 1.6582
- AFNOR: 35NCD6
- JIS: SNCM439
- IS: 40Ni6Cr4Mo3
- GOST: 38Ch2N2MA
Applications & Uses
EN354 steel is versatile and finds applications in several industries, such as automotive, aerospace, and machinery. Common uses include the production of gears, shafts, crankshafts, and structural components that require high strength and durability.
Heat Treatment Process
Heat treatment is crucial to enhance the properties of EN354 steel. The typical heat treatment process includes quenching and tempering to achieve the desired hardness and toughness. The steel is first heated to around 830°C, quenched in oil or water, and then tempered at a lower temperature to reduce brittleness and improve toughness.
Size Ranges & Sections
EN354 steel is available in a variety of forms, including round bars, flat bars, and forgings. Typical size ranges include diameters from 20mm to 400mm and lengths from 2 meters to 6 meters. The condition in which EN354 steel is supplied can vary, from hot-rolled and forged to annealed or normalized, depending on the intended application.
In conclusion, EN354 steel is a high-performance alloy known for its exceptional mechanical properties and wide range of applications. Whether you're in the automotive, aerospace, or machinery industry, EN354 steel could be an excellent choice for your high-strength and durability requirements. Its availability in different sizes and conditions makes it versatile for various manufacturing needs.