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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI 316H is an austenitic stainless steel with a face-centered cubic crystal structure that provides excellent ductility and toughness. The higher carbon content (0.04-0.10%) compared to standard 316 grade enhances high-temperature strength and creep resistance through the formation of stable carbides. The molybdenum addition significantly improves corrosion resistance, particularly against chloride-induced pitting and crevice corrosion.
Heat Treatment Process
MetalZenith employs precise solution annealing at 1040-1150°C followed by rapid cooling to achieve optimal microstructure. This process dissolves carbides and ensures uniform austenitic structure while maintaining the beneficial effects of controlled carbon content. Our advanced heat treatment facilities feature atmosphere-controlled furnaces and precise temperature monitoring systems to ensure consistent results across all product forms.
Manufacturing Process Excellence
Our manufacturing process begins with carefully selected raw materials that undergo vacuum induction melting to achieve exceptional chemical homogeneity. The molten steel is cast into ingots or continuously cast billets, followed by hot working operations including forging, rolling, or extrusion. Cold working processes such as drawing, rolling, or forming are employed to achieve final dimensions and enhanced mechanical properties. Each step is monitored using advanced process control systems to ensure consistent quality.
Quality Standards & Testing
MetalZenith maintains compliance with international standards including ASTM, EN, JIS, and GB specifications. Our comprehensive testing protocol includes chemical analysis using optical emission spectroscopy, mechanical property verification through tensile and impact testing, non-destructive examination using ultrasonic and magnetic particle inspection, and microstructural analysis. High-temperature testing capabilities ensure performance validation under service conditions. All products are supplied with complete material test certificates and traceability documentation meeting the most stringent industry requirements.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.04 - 0.10 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.0 - 18.0 |
| Nickel (Ni) | 10.0 - 14.0 |
| Molybdenum (Mo) | 2.0 - 3.0 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Room Temperature) | ≥ 515 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation (50mm gauge) | ≥ 40% |
| Reduction of Area | ≥ 50% |
| Hardness (Brinell) | ≤ 217 HB |
| Hardness (Rockwell B) | ≤ 95 HRB |
| Impact Energy (Charpy V-notch, 20°C) | ≥ 120 J |
| Fatigue Limit (107 cycles) | 240 MPa |
| Young's Modulus | 200 GPa |
| Shear Modulus | 81 GPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (20°C) | 8.0 g/cm³ |
| Melting Point | 1400-1450°C |
| Thermal Conductivity (20°C) | 16.2 W/m·K |
| Thermal Conductivity (100°C) | 17.5 W/m·K |
| Thermal Expansion (20-100°C) | 16.0×10-6/K |
| Thermal Expansion (20-300°C) | 17.0×10-6/K |
| Specific Heat (20°C) | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.74 µΩ·m |
| Magnetic Permeability | 1.02 µr (max) |
| Curie Temperature | Non-magnetic |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, flat bars, plates, sheets, tubes, pipes, forgings, castings |
| Round Bar Diameter | 6mm - 300mm |
| Flat Bar Dimensions | 10×3mm - 150×50mm |
| Plate Thickness | 3mm - 100mm |
| Sheet Thickness | 0.5mm - 3mm |
| Tube Outer Diameter | 6mm - 219mm |
| Standards Compliance | ASTM A240, A276, A312, A479, EN 10088, JIS G4303, GB/T 1220 |
| Surface Finishes | Hot rolled, cold drawn, bright annealed, pickled, polished (2B, BA, No.4) |
| Dimensional Tolerance | ±0.1mm to ±0.5mm (depending on product form) |
| Length Options | Standard lengths: 3m, 6m, 12m; Custom lengths available |
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Our Advantages in Processing AISI 316H
Advanced Vacuum Melting Technology
MetalZenith employs cutting-edge vacuum induction melting (VIM) and electroslag remelting (ESR) processes to achieve exceptional chemical homogeneity and purity in AISI 316H production. Our controlled atmosphere melting eliminates inclusions and ensures optimal carbide distribution for enhanced high-temperature performance.
Comprehensive Quality Control Systems
Our integrated quality management system features real-time process monitoring, advanced spectroscopic analysis, and automated mechanical testing. Every heat of AISI 316H undergoes rigorous testing including ultrasonic inspection, grain size analysis, and high-temperature creep testing to guarantee consistent performance.
Custom Processing & Global Supply Chain
MetalZenith offers extensive customization capabilities including specialized heat treatments, precision machining, and custom alloy modifications. Our global distribution network ensures reliable delivery worldwide, supported by technical expertise and comprehensive after-sales service for optimal material performance.
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