20 Years Experience | 1000+ Brand Partners | Full Customization
We have 20 years of industry experience, have partnered with over 1,000 brands, and support any customization needs.
Technical Specifications
Product Overview
Metallurgical Characteristics
HSLA 340 features a fine-grained ferritic-pearlitic microstructure with controlled precipitation of microalloying carbides and nitrides. The strategic addition of niobium, vanadium, and titanium promotes grain refinement through precipitation strengthening and grain boundary pinning, resulting in an optimal balance of strength, toughness, and formability essential for high-strength applications.
Heat Treatment Process
MetalZenith employs thermomechanical controlled processing (TMCP) with controlled rolling temperatures between 850-950°C followed by accelerated cooling. This process optimizes austenite conditioning and promotes fine ferrite grain formation while ensuring proper precipitation of strengthening phases. Alternative normalization at 900-920°C may be applied for specific applications requiring enhanced toughness.
Manufacturing Process Excellence
MetalZenith's advanced manufacturing process incorporates continuous casting, controlled rolling with multi-pass deformation, and precise cooling rate control. Our state-of-the-art facilities ensure consistent chemical composition, optimal microstructure development, and superior surface quality. Real-time process monitoring guarantees reproducible mechanical properties and dimensional accuracy.
Specialized Quality Testing
Comprehensive testing protocols include forming limit curve analysis for automotive applications, weldability assessment through controlled thermal severity testing, hydrogen-induced cracking resistance evaluation per NACE TM0284, and delayed fracture testing under sustained loading conditions. These specialized tests ensure HSLA 340 steel meets the stringent requirements of high-strength structural applications.
Application-Specific Technical Considerations
For automotive manufacturing, HSLA 340 provides excellent crash energy absorption and weight reduction capabilities. In building and bridge construction, the steel offers superior load-bearing capacity with reduced section thickness. For pressure vessels and lifting equipment, the combination of high strength and impact toughness ensures safe operation under dynamic loading conditions. Specialized welding procedures and preheating requirements are optimized for each application category.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.23 |
| Manganese (Mn) | 1.35 - 1.65 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 |
| Niobium (Nb) | 0.005 - 0.050 |
| Vanadium (V) | 0.01 - 0.15 |
| Titanium (Ti) | 0.006 - 0.024 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 340 |
| Tensile Strength (MPa) | 450 - 590 |
| Elongation (%) | ≥ 20 |
| Impact Energy at 0°C (J) | ≥ 27 |
| Fatigue Strength (MPa) | 170 - 200 |
| Hardness (HB) | 140 - 190 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 49.8 |
| Thermal Expansion (×10??/K) | 11.7 |
| Elastic Modulus (GPa) | 200 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Coils, Bars, Structural Sections |
| Thickness Range | 1.5 - 50mm |
| Width Range | 600 - 2100mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A572 Grade 50, SAE J410, EN 10149-2 |
| Heat Treatment Condition | Hot Rolled, TMCP, Normalized |
| Surface Finish | Hot Rolled, Pickled & Oiled, Cold Rolled |
Let Us Create Success for Your Project
Professional Team, Premium Products, Complete Service - Your Project Success is Our Mission
Our Advantages in Processing HSLA 340 Steel
Advanced Thermomechanical Processing
MetalZenith employs cutting-edge TMCP technology with precise temperature control and controlled rolling schedules to achieve optimal grain structure and microalloying element precipitation. Our advanced processing ensures consistent high strength and superior formability throughout the material thickness.
Comprehensive Performance Testing
MetalZenith conducts extensive testing protocols including forming limit diagrams, weldability assessments, hydrogen-induced cracking resistance, and delayed fracture testing. Our rigorous quality assurance ensures HSLA 340 steel meets the demanding requirements of high-strength applications.
Custom Processing Solutions
MetalZenith offers tailored processing services including precision cutting, forming, heat treatment optimization, and surface preparation. Our technical support team provides comprehensive assistance for material selection and application-specific requirements.
YOUR TRUSTED STEEL
MANUFACTURING PARTNER
Quick Inquiry
Industries We Serve
Professional steel solutions across major industries
Qualifications & Certifications
