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Technical Specifications
Product Overview
Metallurgical Characteristics
ASTM A992 is a high-strength, low-alloy structural steel specifically designed for wide-flange beam applications. The steel features a controlled chemical composition with optimized carbon equivalent to ensure excellent weldability while maintaining superior mechanical properties. The microstructure consists primarily of ferrite and pearlite phases, providing an ideal balance of strength, ductility, and toughness.
Manufacturing Process
MetalZenith produces ASTM A992 steel using advanced electric arc furnace technology followed by ladle refining for precise chemical composition control. The steel is continuously cast into blooms, then hot-rolled using our state-of-the-art universal beam mill. Our controlled cooling process ensures uniform mechanical properties throughout the cross-section. The rolling process includes precise dimensional control and surface quality optimization.
Heat Treatment & Processing
ASTM A992 steel is typically supplied in the as-rolled condition, eliminating the need for additional heat treatment. The controlled rolling process at MetalZenith achieves the required mechanical properties through thermomechanical processing. For special applications, stress relieving at 580-650°C may be performed to reduce residual stresses without significantly affecting mechanical properties.
Quality Standards & Testing
Every heat of ASTM A992 steel undergoes comprehensive testing including chemical analysis, tensile testing, Charpy V-notch impact testing, and dimensional verification. MetalZenith maintains AISC certification and follows AWS D1.1 welding standards. Our quality management system ensures full traceability from raw materials through final inspection, with complete documentation provided for each shipment.
Weldability & Fabrication
ASTM A992 exhibits excellent weldability due to its controlled carbon equivalent (≤ 0.45) and low sulfur content. The steel can be welded using all common welding processes including SMAW, GMAW, FCAW, and SAW. Preheating is typically not required for most applications, making it highly suitable for field welding and fabrication. The steel also demonstrates good machinability and forming characteristics for structural applications.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.23 |
| Manganese (Mn) | 0.75 - 1.35 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.05 |
| Copper (Cu) | ≤ 0.35 |
| Nickel (Ni) | ≤ 0.30 |
| Chromium (Cr) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.15 |
| Vanadium (V) | ≤ 0.08 |
| Niobium (Nb) | ≤ 0.05 |
| Titanium (Ti) | ≤ 0.06 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (Fy) | 345 MPa (50 ksi) minimum |
| Tensile Strength (Fu) | 450 MPa (65 ksi) minimum |
| Elongation in 200mm | ≥ 18% |
| Elongation in 50mm | ≥ 21% |
| Yield-to-Tensile Ratio | ≤ 0.85 |
| Charpy V-Notch Impact (20°C) | ≥ 27 J (20 ft-lbf) |
| Brinell Hardness | 137-207 HB |
| Modulus of Elasticity | 200 GPa (29,000 ksi) |
| Shear Modulus | 80 GPa (11,600 ksi) |
| Poisson's Ratio | 0.30 |
| Fatigue Strength (2×106 cycles) | 165 MPa (24 ksi) |
| Reduction of Area | ≥ 50% |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1425-1540°C |
| Thermal Conductivity (20°C) | 50 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12×10-6/K |
| Specific Heat Capacity | 490 J/kg·K |
| Electrical Resistivity (20°C) | 0.15 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Thermal Diffusivity | 13×10-6 m²/s |
| Coefficient of Thermal Expansion (20-200°C) | 13×10-6/K |
| Emissivity (Oxidized Surface) | 0.79 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Wide Flange Beams (W-shapes), H-Piles, Columns |
| Size Range | W4×13 to W44×335 |
| Length Range | 6m - 24m (20ft - 80ft) |
| Weight Range | 19.3 kg/m - 498 kg/m (13 - 335 lbs/ft) |
| Standards Compliance | ASTM A992/A992M, AISC 360, AWS D1.1 |
| Surface Finish | Mill Scale, Shot Blasted, Painted |
| Dimensional Tolerances | Per ASTM A6/A6M |
| Straightness Tolerance | L/1000 maximum |
| End Preparation | Square Cut, Beveled, Coped |
| Marking | Heat Number, Grade, Size per AISC |
| Packaging | Bundled, Individually Tagged |
| Testing Certification | Mill Test Certificate, Third-Party Inspection Available |
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Our Advantages in Processing ASTM A992
Advanced Electric Arc Furnace Technology
MetalZenith utilizes cutting-edge electric arc furnace technology with precise temperature control and advanced ladle metallurgy systems. This ensures optimal chemical composition control, superior cleanliness, and consistent mechanical properties throughout every heat of ASTM A992 steel production.
Comprehensive Quality Control Systems
Our integrated quality management system features real-time chemical analysis, automated dimensional inspection, and comprehensive mechanical testing. Every ASTM A992 product undergoes rigorous testing including tensile, impact, and hardness verification with full traceability documentation.
Custom Processing & Global Supply Chain
MetalZenith offers extensive customization capabilities including precision cutting, drilling, and surface treatments. Our global distribution network ensures reliable delivery worldwide, while our technical support team provides engineering assistance for optimal material selection and application.
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