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Technical Specifications
Product Overview
Metallurgical Characteristics
Martensitic stainless steel exhibits a body-centered tetragonal crystal structure after quenching, providing high strength and hardness. The chromium content of 11.5-13.5% ensures adequate corrosion resistance while maintaining hardenability. The martensitic microstructure consists of fine lath martensite with carbide precipitates that contribute to strength and wear resistance.
Heat Treatment Process
MetalZenith employs controlled austenitizing at 950-1050°C followed by rapid quenching in oil or air to achieve martensitic transformation. Subsequent tempering at 150-650°C optimizes the balance between hardness and toughness. Our precise temperature control and atmosphere management ensure consistent mechanical properties and corrosion resistance.
Manufacturing Process Excellence
MetalZenith utilizes vacuum induction melting followed by electroslag remelting to achieve superior cleanliness and chemical homogeneity. Our controlled rolling and forging processes optimize grain structure and mechanical properties. Advanced surface finishing techniques including pickling and passivation enhance corrosion resistance and surface quality.
Specialized Quality Testing
Our comprehensive testing program includes pitting potential measurement using cyclic polarization, ASTM A262 Practice A and E for intergranular corrosion assessment, constant load stress corrosion cracking tests in chloride environments, and X-ray photoelectron spectroscopy analysis for passivation film thickness verification. These tests ensure optimal performance in corrosive service conditions.
Application-Specific Considerations
For chemical equipment applications, our martensitic stainless steel provides excellent resistance to organic acids and moderate concentrations of inorganic acids. In food industry applications, the material meets FDA requirements with superior cleanability and corrosion resistance. Medical device applications benefit from biocompatibility and sterilization resistance. Marine and offshore applications utilize the material's strength and chloride corrosion resistance. Architectural applications leverage the combination of strength, corrosion resistance, and aesthetic appeal with various surface finishes.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 - 0.15 |
| Chromium (Cr) | 11.5 - 13.5 |
| Nickel (Ni) | ≤ 0.60 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Molybdenum (Mo) | 0.15 - 0.25 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 550 |
| Tensile Strength (MPa) | 750 - 950 |
| Elongation (%) | ≥ 15 |
| Hardness (HRC) | 22 - 32 |
| Corrosion Rate (mm/year) | < 0.1 (3.5% NaCl) |
| Pitting Potential (mV) | ≥ 200 (SCE) |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.70 |
| Melting Point (°C) | 1480 - 1530 |
| Thermal Conductivity (W/m·K) | 24.9 |
| Thermal Expansion (×10??/K) | 10.4 |
| Electrical Resistivity (μΩ·cm) | 57 |
| Elastic Modulus (GPa) | 200 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Rods, Tubes, Forgings |
| Thickness Range | 0.5 - 80mm |
| Width Range | 500 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A276, AISI 410, EN 1.4006 |
| Heat Treatment Condition | Quenched and Tempered |
| Surface Finish | 2B, BA, No.4, Pickled |
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Our Advantages in Processing Martensitic Stainless Steel
Advanced Vacuum Melting Technology
MetalZenith employs vacuum induction melting and electroslag remelting processes with precise atmosphere control to achieve optimal chemical composition and microstructural uniformity. Our advanced melting technology ensures minimal inclusion content and enhanced corrosion resistance throughout the material cross-section.
Comprehensive Corrosion Testing Program
MetalZenith conducts extensive corrosion testing including pitting potential measurement, ASTM A262 intergranular corrosion testing, stress corrosion cracking evaluation in chloride environments, and X-ray photoelectron spectroscopy for passivation film thickness analysis. Our rigorous testing ensures superior performance in corrosive environments.
Custom Heat Treatment Solutions
MetalZenith provides tailored heat treatment services including solution annealing, quenching, and tempering with precise temperature control and atmosphere management. Our metallurgical expertise enables customized mechanical properties and corrosion resistance optimization for specific application requirements.
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