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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI 310S is an austenitic stainless steel with a face-centered cubic crystal structure that provides excellent ductility and toughness across a wide temperature range. The high chromium content (24-26%) forms a protective chromium oxide layer that provides superior oxidation resistance at temperatures up to 1150°C. The balanced nickel content (19-22%) stabilizes the austenitic structure and enhances corrosion resistance in various environments.
Heat Treatment Process
MetalZenith employs precise solution annealing at 1050-1100°C followed by rapid cooling to achieve optimal mechanical properties and corrosion resistance. This heat treatment dissolves carbides and ensures a homogeneous austenitic microstructure. The material exhibits excellent thermal stability with minimal sigma phase formation during extended high-temperature exposure.
Manufacturing Process Excellence
Our advanced manufacturing process begins with vacuum induction melting using premium raw materials, followed by electroslag remelting for enhanced cleanliness. Hot rolling is performed within controlled temperature ranges to optimize grain structure, while cold working operations utilize precision equipment to achieve tight dimensional tolerances and superior surface finishes.
Quality Standards & Testing
Every batch undergoes comprehensive testing including chemical analysis via optical emission spectroscopy, mechanical property verification, intergranular corrosion testing per ASTM A262, and non-destructive examination. MetalZenith maintains full traceability from raw material to finished product, with certifications complying with EN 10204 3.1 and 3.2 requirements. Our quality management system ensures consistent performance in critical high-temperature applications.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.50 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 24.0 - 26.0 |
| Nickel (Ni) | 19.0 - 22.0 |
| 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% |
| Hardness (Brinell) | ≤ 217 HB |
| Hardness (Rockwell B) | ≤ 95 HRB |
| Impact Energy (Charpy V-notch) | ≥ 120 J |
| Young's Modulus | 200 GPa |
| Fatigue Limit (107 cycles) | 240 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.98 g/cm³ |
| Melting Point | 1400-1450°C |
| Thermal Conductivity (20°C) | 14.2 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 14.4×10-6/K |
| Thermal Expansion Coefficient (20-1000°C) | 18.0×10-6/K |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.78 µΩ·m |
| Magnetic Permeability | 1.02 µH/m (Non-magnetic) |
| Poisson's Ratio | 0.27-0.30 |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, square bars, flat bars, sheets, plates, tubes, pipes, forgings |
| Round Bar Diameter | 6mm - 300mm |
| Sheet/Plate Thickness | 0.5mm - 100mm |
| Tube Outer Diameter | 6mm - 219mm |
| Standards Compliance | ASTM A240, A276, A312, A479, EN 10088-2, JIS G4303, GB/T 1220 |
| Surface Finishes | Hot rolled, cold rolled, bright annealed, pickled, polished (2B, BA, No.4, No.8) |
| Length Tolerance | ±5mm or as specified |
| Diameter Tolerance | h9, h11, or as specified |
| Condition | Solution annealed (1050-1100°C), descaled, pickled |
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Our Advantages in Processing AISI 310S
Advanced Vacuum Melting Technology
MetalZenith utilizes state-of-the-art vacuum induction melting (VIM) and electroslag remelting (ESR) processes to produce AISI 310S with superior chemical homogeneity, reduced inclusion content, and enhanced high-temperature performance characteristics.
Comprehensive Quality Control System
Our integrated quality management system features advanced spectroscopic analysis, mechanical testing laboratories, and metallographic examination facilities, ensuring every batch of AISI 310S meets stringent aerospace and industrial specifications with full material traceability.
Custom Processing & Global Supply
MetalZenith offers extensive customization capabilities including precision machining, specialized heat treatments, and custom alloy modifications. Our global distribution network ensures reliable supply chain management with just-in-time delivery worldwide.
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