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
22MnB5 is a low-alloy manganese-boron steel specifically designed for hot forming and press hardening applications. The addition of boron significantly enhances hardenability, allowing for complete martensitic transformation during rapid cooling from austenitizing temperatures. The steel exhibits excellent formability in the as-delivered condition while achieving ultra-high strength after press hardening.
Heat Treatment Process
The press hardening process involves heating the steel to 900-950°C, forming at elevated temperature, and immediate quenching in the die to achieve cooling rates of 30-50°C/s. This rapid cooling transforms the austenitic microstructure to martensite, resulting in tensile strengths exceeding 1500 MPa. MetalZenith provides detailed heat treatment guidelines to optimize the press hardening process.
Manufacturing Process
MetalZenith produces 22MnB5 through controlled hot rolling followed by precise cooling to achieve the desired microstructure and mechanical properties. Our advanced process control ensures consistent chemical composition and eliminates segregation. Optional Al-Si coating can be applied to prevent oxidation and decarburization during the hot forming process.
Quality Standards
All 22MnB5 steel produced by MetalZenith undergoes comprehensive testing including chemical analysis by optical emission spectroscopy, mechanical property verification through tensile and hardness testing, and microstructural examination. Our quality management system is certified to ISO 9001:2015 and IATF 16949:2016, ensuring consistent quality for automotive applications.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.20 - 0.25 |
| Manganese (Mn) | 1.10 - 1.40 |
| Silicon (Si) | 0.15 - 0.35 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.008 |
| Chromium (Cr) | 0.15 - 0.35 |
| Boron (B) | 0.002 - 0.005 |
| Titanium (Ti) | 0.020 - 0.050 |
| Aluminum (Al) | 0.020 - 0.060 |
| Nitrogen (N) | ≤ 0.009 |
⚙️ Mechanical Properties
| Property | As Delivered | After Press Hardening |
|---|---|---|
| Tensile Strength (Rm) | 500 - 650 MPa | ≥ 1500 MPa |
| Yield Strength (Rp0.2) | 300 - 450 MPa | ≥ 1200 MPa |
| Elongation (A80) | ≥ 23% | ≥ 5% |
| Hardness (HV10) | 160 - 220 | ≥ 470 |
| Impact Energy (KV at 20°C) | ≥ 40 J | ≥ 25 J |
| Young's Modulus | 210 GPa | 210 GPa |
| Fatigue Limit (10&sup7; cycles) | 250 MPa | 600 MPa |
| Poisson's Ratio | 0.27 - 0.30 | 0.27 - 0.30 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1510°C |
| Thermal Conductivity (20°C) | 54 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12×10-6/K |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.16 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Thermal Diffusivity | 13.8 mm²/s |
| Emissivity (oxidized surface) | 0.85 |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Hot rolled sheet, Cold rolled sheet, Coil, Plate |
| Thickness Range | 0.8 - 6.0 mm |
| Width Range | 600 - 2100 mm |
| Length Range | 1000 - 12000 mm |
| Surface Finish | Hot rolled, Pickled, Al-Si coated (Usibor type) |
| Dimensional Tolerance | ±0.05 mm (thickness), ±3 mm (width) |
| Standards Compliance | EN 10083-3, VDA 239-100, JFS A1001 |
| Edge Condition | Mill edge, Trimmed edge, Slit edge |
| Coil Weight | 5 - 25 tons |
| Packaging | Steel strapping, Wooden pallet, Protective wrapping |
Let Us Create Success for Your Project
Professional Team, Premium Products, Complete Service - Your Project Success is Our Mission
Our Advantages in Processing 22MnB5
Advanced Hot Rolling Technology
MetalZenith employs state-of-the-art controlled hot rolling processes with precise temperature and deformation control, ensuring optimal microstructure and consistent mechanical properties throughout the 22MnB5 steel production.
Comprehensive Quality Testing
Our integrated quality control system includes real-time chemical composition monitoring, mechanical property testing, and microstructural analysis, guaranteeing that every batch of 22MnB5 meets stringent automotive industry standards.
Custom Processing Solutions
MetalZenith offers tailored processing services including precision cutting, surface treatment, and specialized packaging to meet specific customer requirements for 22MnB5 steel applications in automotive and industrial sectors.
YOUR TRUSTED STEEL
MANUFACTURING PARTNER
Quick Inquiry
Industries We Serve
Professional steel solutions across major industries
Qualifications & Certifications
