Knowledge

Yield Strength? ≥345MPa (slightly lower for thicknesses > 16mm, e.g., ≥325MPa for 16-35mm). Tensile Strength? 470~630MPa. Elongation after Fr

Main chemical composition (%)? C≤0.20; Mn=1.00~1.60; Si≤0.50; S≤0.035; P≤0.035; trace amounts of V/Nb/Ti. Functions of each element? Mn: S

What is Q345 steel? Low-alloy high-strength structural steel, formerly designated 16Mn, with a yield strength ≥345MPa. What does the designation me

What's the maximum thickness for Q235? A: Commercially available up to 200mm; yield strength decreases with thickness. Is Q235 magnetic? A: Yes (ferro

What is the standard for Q235? A: GB/T 700-2006 (Carbon Structural Steels). What are the equivalent grades of Q235? A: International: S235JR (EN 10025

What's the difference between Q235 and A3 steel? A: Same material . A3 is the old Soviet-era designation ; Q235 is the new Chinese GB/T 700 name. Q235

What is the modulus of elasticity of Q235? A: ~206 GPa. What is the Poisson's ratio of Q235? A: ~0.30. Is Q235 corrosion-resistant? A: Poor (unalloyed

What is the impact energy of Q235? A: ≥27J (V-notch) at specified temp (B:20°C, C:0°C, D:-20°C); A: no requirIs Q235 weldable? A: Excel

What does Q235D mean? A: Grade D: -20°C impact test (≥27J); strictest S/P (S≤0.035%, P≤0.035%); for cold regions, low-temperature equipme

The content covers selection principles, rust-proof paper selection, VCI packaging and transportation methods, sealed packaging operation procedures,

The key points are: selection of lifting equipment, protection of contact surfaces, protection of inner core, standardized operation, and damage repai

The biggest challenge in long-distance transportation of galvanized coils is the drastic changes in the environment, especially humidity and temperatu