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@@Atitude-SS FE250 and E250 are designations used for structural steel, and they represent different standards and properties of the material. Here's the distinction: 1. FE250 (IS Standard): Standard: Indian Standard (IS 2062). Designation: The term FE stands for "Ferrum" (iron), and 250 refers to the minimum yield strength in MPa (megapascals). Application: Commonly used in construction, structural applications, and general engineering purposes in India. Specifications: Yield Strength: Minimum 250 MPa. Ultimate Tensile Strength: Typically around 410 MPa. Ductility: Good, suitable for structural applications. 2. E250 (IS Standard Revision): Standard: Indian Standard (IS 2062:2011, later revisions). Designation: The term E stands for "Elasticity," and 250 refers to the minimum yield strength in MPa. Application: Also used in structural applications but follows revised or updated standards. Specifications: Yield Strength: Minimum 250 MPa. Ultimate Tensile Strength: Typically around 410 MPa. Grades: Comes in sub-grades like E250A, E250B, and E250C, which denote increasing levels of toughness and weldability requirements. In summary, E250 is a more modern and detailed classification with sub-grades to meet specific structural requirements, while FE250 is an older term with a more general application. Both are same

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@@pranab774 shukriya sir, for replying!!

It is on 14:03 minute on the video

Rebar (reinforcing bar) and HR Coil (Hot Rolled Coil) are two distinct types of steel products, used for different purposes, and their chemical compositions are tailored for their respective applications. Here's a comparison of their typical chemical compositions: 1. Rebar (Reinforcing Bar) Rebar is primarily used in reinforced concrete structures to improve their tensile strength. The chemical composition is designed for ductility, corrosion resistance, and strength. Typical chemical composition of rebar (in percentage): Carbon (C): 0.25% to 0.30% Manganese (Mn): 0.50% to 1.50% Silicon (Si): 0.15% to 0.30% Sulfur (S): ≤ 0.05% Phosphorus (P): ≤ 0.05% Chromium (Cr): Sometimes added for corrosion resistance, up to 0.20% Nickel (Ni): ≤ 0.50% Copper (Cu): ≤ 0.40% Standards like ASTM A615 and A706 guide the composition of rebar. 2. HR Coil (Hot Rolled Coil) HR coils are used in various applications, including construction, automotive, and manufacturing. The chemical composition is usually designed for formability, weldability, and strength. Typical chemical composition of HR coil (in percentage): Carbon (C): 0.10% to 0.25% Manganese (Mn): 0.30% to 1.50% Silicon (Si): 0.10% to 0.35% Sulfur (S): ≤ 0.04% Phosphorus (P): ≤ 0.04% Aluminum (Al): ≤ 0.03% (acts as a deoxidizer) Nitrogen (N): ≤ 0.01% Standards like ASTM A36 and ASTM A1011 define the specifications for HR coils. Key Differences: Carbon Content: Rebar typically has higher carbon content than HR coil, improving its tensile strength but making it less ductile. Manganese: Both products have manganese, which adds strength and toughness, though the levels can vary slightly. Applications: Rebar is more focused on tensile strength for concrete reinforcement, while HR coils emphasize formability for manufacturing.

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@@vishalsabane7952 E stands for the grade of the steel, which indicates its mechanical properties and chemical composition. Same as F and D

For example E 250 250 indicates the minimum yield stress in megapascals (MPa). Therefore, E 250 steel has a minimum yield stress of 250 MPa.

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@@jaibalodi4344 Geometric Dimensioning and Tolerancing" by Prof. Krishnamurthy

Geometric Dimensioning and Tolerancing for Mechanical Design" by Prof. Kulkarni

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Slag formation ke jariye ---- chuna pathhar (lime stone) silicon ke sath react karke silicon dioxide banta hai, jo iron se halka hota hai or ye upar slag banke bahar aa jata hai

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