CoreMetal Technical Team

How to Read Steel Grade Designations: Q235, A36, S355, SS400 Explained Steel grade designations look like a secret code. What does Q235 mean? How is A36 different from S355? This guide decodes the most common systems: GB, ASTM, EN, and JIS. Chinese GB Grades Q235: Q = Yield strength, 235 = 235 MPa. Most common […]

Stainless Steel vs Carbon Steel: Cost, Weight & Performance Compared Choosing between stainless steel and carbon steel depends on your application environment, budget, and performance requirements. Let us break down the key differences. Composition Carbon steel is iron + carbon (up to 2.1%). Stainless steel contains at least 10.5% chromium for corrosion resistance, plus nickel

Steel Pipe Size Chart: Nominal Bore, OD, WT & Schedule Explained If you work with steel pipes, you have probably stared at a pipe size chart and felt confused. Nominal Bore (NB), Outside Diameter (OD), Wall Thickness (WT), and Schedule numbers all seem to overlap. In this guide, we break down the complete steel pipe

Green Steel: What It Means for the Future of Construction The steel industry produces ~8% of global CO₂ emissions. As governments tighten carbon regulations, “green steel” is becoming a business imperative for construction professionals. What Is Green Steel? Steel produced with dramatically reduced or zero carbon emissions: Hydrogen-based DRI (H2-DRI): Replacing coal with green hydrogen

Steel Welding Methods Compared: MIG, TIG, SMAW & FCAW Choosing the right welding method is critical for fabrication quality, productivity, and cost. The Four Major Processes 1. SMAW (Stick Welding) Flux-coated electrode creates arc. Equipment: $, Skill: moderate-high, Speed: slow. Excellent for field work and thick sections. All positions, wind-resistant. 2. GMAW (MIG Welding) Continuous

Copper vs Brass vs Bronze: A Complete Alloy Selection Guide Copper, brass, and bronze are all copper-based alloys with significantly different properties, costs, and applications. Composition Basics Alloy Composition Color Pure Copper ≥99.3% Cu Reddish-orange Brass Cu + Zinc (5-45%) Yellow-gold Bronze Cu + Tin (5-20%) Reddish-brown Aluminum Bronze Cu + Al (5-12%) Golden-yellow Property

Steel Packaging Solutions: Strapping, Sheet Piling & Containers Steel plays a critical role in industrial packaging, cargo securing, and containment worldwide. This guide covers the major steel packaging applications. 1. Steel Strapping The most widely used material for heavy-duty cargo securing. Made from carbon steel, stainless, or high-tensile steel. Type Thickness Tensile Best For Regular

Carbon Steel vs Alloy Steel: A Comprehensive Comparison Understanding the difference between carbon steel and alloy steel is fundamental to selecting the right material. Both are iron-based, but alloying elements create dramatically different properties. The Fundamental Difference Carbon steel: Carbon content 0.05-2.1%, manganese up to 1.65%, minimal other elements. Properties come mainly from carbon level

Stainless Steel Surface Finish Guide: 2B, BA, No.4, 8K Mirror Stainless steel finish affects corrosion resistance, cleanability, formability, and cost. Choosing the wrong finish can compromise performance. Standard Finishes Overview Finish Description Ra (μm) Reflectivity No.1 Hot rolled, annealed, descaled 3.0-6.0 Matte gray 2B Cold rolled bright (most common) 0.1-0.5 Semi-bright BA Bright annealed 0.05-0.2