Description
Specifications and Equivalent Grades
| 34CrMo4 Specification | Equivalent Grades |
|---|---|
| DIN 1.7220 | AISI 4135 |
| EN 10083 | 34CrMoS4 |
| JIS G4105 | SCM435 |
Chemical Composition
| Element | 34CrMo4 (%) | AISI 4135 (%) | SCM435 (%) |
|---|---|---|---|
| C | 0.30-0.37 | 0.33-0.38 | 0.33-0.38 |
| Si | 0.40 max | 0.15-0.35 | 0.15-0.35 |
| Mn | 0.60-0.90 | 0.60-0.90 | 0.60-0.90 |
| P | 0.025 max | 0.035 max | 0.030 max |
| S | 0.035 max | 0.040 max | 0.040 max |
| Cr | 0.90-1.20 | 0.80-1.10 | 0.90-1.20 |
| Mo | 0.15-0.30 | 0.15-0.25 | 0.15-0.30 |
Properties of 34CrMo4 Steel
34CrMo4 / 1.7220 steel has high tensile strength and toughness, even at varying temperatures. 34CrMo4 has good hardenability. DIN 34CrMo4 also has excellent wear resistance and fatigue strength.
Forging of 34CrMo4 Material
Forging of 34CrMo4 steel should be done between 900-1200°C, followed by cooling in still air.
Heat Treatment
Annealing: Heat to 650-700°C, cool slowly.
Normalizing: Heat to 870-900°C, cool in air.
Quenching: 830-870°C, oil or water quench.
Tempering: 540-680°C.
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The automotive industry also makes extensive use of 34CrMo4 alloy steel tubes. These tubes are used in the manufacturing of engine components, such as crankshafts and connecting rods, where high strength and durability are required. The tubes can withstand the stresses and strains of engine operation, ensuring reliable performance and longevity. Additionally, 34CrMo4 alloy steel tubes are used in the suspension and steering systems of vehicles, providing stability and safety.
In the construction industry, 34CrMo4 alloy steel tubes are used for structural applications. They are commonly used in the construction of bridges, buildings, and other infrastructure projects. The strength and durability of these tubes make them ideal for supporting heavy loads and withstanding the forces of nature. They are also used in the manufacturing of scaffolding and other temporary structures, providing a safe and reliable working platform.
The aerospace industry also relies on 34CrMo4 alloy steel tubes for various applications. These tubes are used in the manufacturing of aircraft components, such as landing gear and engine mounts, where high strength and lightweight materials are required. The tubes can withstand the extreme temperatures and pressures encountered during flight, ensuring reliable performance and safety. Additionally, 34CrMo4 alloy steel tubes are used in the aerospace industry for hydraulic and pneumatic systems, providing reliable fluid transfer and control.
In the power generation industry, 34CrMo4 alloy steel tubes are used in the construction of boilers and heat exchangers. These tubes can withstand the high temperatures and pressures of steam and hot water, ensuring reliable performance and long service life. They are also used in the manufacturing of turbine components, where high strength and resistance to wear and corrosion are required.
In addition to the above industries, 34CrMo4 alloy steel tubes are also used in many other applications, such as in the manufacturing of machinery and equipment, chemical processing plants, and marine applications. The versatility and durability of these tubes make them an essential material in a wide range of industries.
In conclusion, 34CrMo4 alloy steel tubes are a highly versatile and reliable material that finds extensive use in various industries. Their exceptional mechanical properties and durability make them ideal for applications where strength, toughness, and resistance to wear and corrosion are required. Whether in the oil and gas, automotive, construction, aerospace, or power generation industries, 34CrMo4 alloy steel tubes play a crucial role in ensuring reliable performance and long service life.
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