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
EN 1.4125 is a high-carbon martensitic stainless steel with a complex microstructure consisting of tempered martensite matrix with uniformly distributed chromium carbides. The high carbon content (0.95-1.20%) combined with 16-18% chromium provides exceptional hardness and wear resistance while maintaining adequate corrosion resistance in mild environments.
Heat Treatment Process
MetalZenith's optimized heat treatment process includes annealing at 850-900°C, hardening at 1020-1050°C with oil or air quenching, followed by tempering at 150-200°C to achieve maximum hardness (58-62 HRC). Our controlled atmosphere furnaces ensure uniform heating and prevent decarburization, maintaining consistent mechanical properties throughout the cross-section.
Manufacturing Process Excellence
Our manufacturing process begins with vacuum induction melting using premium raw materials, followed by electroslag remelting for enhanced cleanliness. Hot forging and rolling operations are performed within precise temperature ranges to optimize grain structure and carbide distribution. Cold finishing operations utilize advanced machinery to achieve superior surface quality and dimensional accuracy.
Quality Standards & Testing
All EN 1.4125 products undergo comprehensive testing including chemical analysis by optical emission spectroscopy, mechanical property verification, ultrasonic testing for internal soundness, and metallographic examination. Our quality management system complies with ISO 9001:2015, AS9100D, and NADCAP requirements, ensuring full traceability and documentation for aerospace and critical applications.
Technical Support & Engineering Services
MetalZenith provides comprehensive technical support including material selection guidance, heat treatment optimization, machining recommendations, and application-specific testing. Our metallurgical engineers work closely with customers to develop customized solutions and provide ongoing technical assistance throughout the product lifecycle.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.95 - 1.20 |
| Chromium (Cr) | 16.00 - 18.00 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Molybdenum (Mo) | ≤ 0.75 |
| Nickel (Ni) | ≤ 0.60 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | 1900 - 2100 MPa | Hardened & Tempered |
| Yield Strength (0.2%) | 1650 - 1850 MPa | Hardened & Tempered |
| Elongation | 2 - 5% | Hardened & Tempered |
| Hardness | 58 - 62 HRC | Hardened & Tempered |
| Impact Energy (Charpy V) | 15 - 25 J | Room Temperature |
| Fatigue Limit | 800 - 900 MPa | 10&sup7; cycles |
| Young's Modulus | 200 GPa | Room Temperature |
🔬 Physical Properties
| Property | Value | Temperature |
|---|---|---|
| Density | 7.70 g/cm³ | 20°C |
| Melting Point | 1450 - 1510°C | - |
| Thermal Conductivity | 24.2 W/m·K | 20°C |
| Thermal Expansion Coefficient | 10.4×10-6/K | 20-100°C |
| Specific Heat Capacity | 460 J/kg·K | 20°C |
| Electrical Resistivity | 0.60 µΩ·m | 20°C |
| Magnetic Properties | Ferromagnetic | Hardened Condition |
| Curie Temperature | ~750°C | - |
📏 Product Specifications
| Specification | Available Options | Standards |
|---|---|---|
| Product Forms | Round bars, flat bars, sheets, plates, tubes, forgings | EN 10088, ASTM A276 |
| Round Bar Diameter | 6mm - 300mm | EN 10088-3 |
| Flat Bar Dimensions | 10×3mm - 150×50mm | EN 10088-2 |
| Sheet Thickness | 0.5mm - 6mm | EN 10088-2 |
| Plate Thickness | 6mm - 100mm | EN 10088-2 |
| Surface Finish | Hot rolled, cold drawn, ground, polished | Custom specifications |
| Tolerance Class | h9, h11 (bars), ±0.1mm (sheets) | EN 10088 |
| Length | Up to 6000mm (standard), custom lengths available | Customer specification |
Let Us Create Success for Your Project
Professional Team, Premium Products, Complete Service - Your Project Success is Our Mission
Our Advantages in Processing EN 1.4125
Advanced Vacuum Melting Technology
MetalZenith employs vacuum induction melting (VIM) and electroslag remelting (ESR) processes to achieve exceptional cleanliness and homogeneity in EN 1.4125 production. Our controlled atmosphere melting eliminates inclusions and ensures optimal carbide distribution for superior mechanical properties.
Comprehensive Quality Control System
Our state-of-the-art testing laboratory features advanced spectroscopy, mechanical testing equipment, and metallographic analysis capabilities. Every batch undergoes rigorous chemical composition verification, hardness testing, and microstructural examination to guarantee consistent quality and performance.
Custom Processing & Global Supply
MetalZenith offers extensive customization capabilities including precision machining, heat treatment optimization, and surface finishing services. Our global distribution network ensures reliable supply chain management with just-in-time delivery and comprehensive technical support worldwide.
YOUR TRUSTED STEEL
MANUFACTURING PARTNER
Quick Inquiry
Industries We Serve
Professional steel solutions across major industries
Qualifications & Certifications
