EN 10025 S275JR Carbon Steel
Description
EN 10025 S275JR is a low carbon, high tensile strength structural steel known for its excellent weldability, machinability, and formability. It is commonly used in various construction and engineering applications.
Applications
EN 10025 S275JR is extensively used in structural and civil engineering projects, including buildings, bridges, machinery, and equipment. It is suitable for fabrication, manufacturing, and general construction purposes.
Blacksmith Applications
EN 10025 S275JR can also be used by blacksmiths for forging various components, such as hand tools, decorative ironwork, and artistic creations. Its good formability and weldability make it a versatile choice for blacksmithing projects.
EN 10025 S275JR Forging Temperature
Forging of EN 10025 S275JR steel should be done between 900°C - 1200°C, followed by slow cooling in a furnace or insulated environment to prevent cracking and achieve desired mechanical properties.
EN 10025 S275JR Heat Treatment
EN 10025 S275JR Annealing Temperature
Annealing is typically performed at 850°C - 900°C for a sufficient amount of time, followed by slow cooling in the furnace to relieve internal stresses and enhance machinability.
EN 10025 S275JR Normalizing Temperature
Normalizing can be carried out at 890°C to 950°C for a proper soak time, followed by air cooling. This process helps improve the steel's mechanical properties and uniformity.
EN 10025 S275JR Hardening Temperature
Hardening is achieved by heating the steel to 820°C - 860°C and then quenching in water or oil. This process enhances the steel's strength and hardness while maintaining its formability.
EN 10025 S275JR Tempering Temperature
Tempering should be performed between 540°C to 680°C to achieve the desired balance of hardness and toughness. It helps reduce internal stresses and improve the steel's ductility.
Machinability
EN 10025 S275JR steel exhibits good machinability with appropriate cutting tools and techniques. It can be easily drilled, turned, and milled, making it suitable for various machining operations.
Weldability
EN 10025 S275JR steel has excellent weldability, allowing it to be easily welded using conventional methods. Preheating and post-weld heat treatment are sometimes recommended to minimize the risk of cracking and achieve optimum weld quality.
Chemical Analysis
The chemical make up of this steel.
| Chemical | Content (%) |
|---|---|
| Carbon (C) | 0.18 |
| Manganese (Mn) | 1.50 |
| Phosphorus (P) | 0.040 |
| Sulfur (S) | 0.040 |
| Nitrogen (N) | 0.014 |
| Copper (Cu) | 0.60 |
| Hydrogen (H) | 0.015 |
| Iron (Fe) | Balance |