Excellence & expertise in manufacturing stainless steel wires & bars since 1990
Stainless Steel - Grade 385 / 1.4305
Description
Stainless Steel Grade 385/1.4305 is an austenitic stainless steel known for its high sulfur content, which enhances its machinability. This grade is specifically designed for high-speed machining operations. It provides good corrosion resistance and formability, making it suitable for various industrial applications that require precision and efficiency in machining.
Chemical Composition
- Chromium (Cr): 19.0 - 21.0%
- Nickel (Ni): 9.0 - 11.0%
- Silicon (Si):≤ 1.0%
- Manganese (Mn): ≤ 2.0%
- Carbon (C): ≤ 0.05%
- Phosphorus (P): ≤ 0.045%
- Sulfur (S): 0.15 - 0.35%
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Mechanical Properties
- Tensile Strength: 515 - 690 MPa
- Yield Strength: 205 MPa
- Elongation: 40%
- Hardness: 85 HRB
Thermal & Physical Properties
- Density: 7.98 g/cm³
- Melting Point: 1400 - 1450°C
- Thermal Conductivity: 16.2 W/m•K (at 100°C)
- Coefficient of Thermal Expansion: 17.2 x 10⁻⁶ /°C (0-100°C)
- Electrical Resistivity: 0.072 x 10⁻⁶ Ω•m (at 20°C)
Other Designations
- UNS:S30485
- EN: 1.4305
- DIN: X8CrNiS18-9
- AISI: 303
Fabrication and Heat Treatment
- Welding: Not recommended for critical welds due to sulfur content.
- Machining: Optimized for high-speed machining due to high sulfur content.
- Forming: Good formability, can be easily formed using standard methods.
- Heat Treatment: Annealing is performed at 1010-1120°C followed by rapid cooling. This grade is not hardenable by heat treatment.
Applications
- Automotive: Precision machined parts, fittings.
- Aerospace: Components requiring high machinability.
- Industrial Machinery: Screws, bolts, and other fasteners.
- Electrical: Connectors and terminals.
- Consumer Goods: Kitchen appliances and other high-precision items.
Supplied Forms
- Bars:
- Rods
- Wires
Features
- Enhanced Machinability: High sulfur content ensures excellent machinability.
- Corrosion Resistance: Good resistance to atmospheric corrosion and mild environments.
- Formability: Easily formed into complex shapes.
- Economic: Reduced machining time leads to cost savings in manufacturing.
- Non-Hardenable: Cannot be hardened by heat treatment, retaining its machinability.