S21800 is an austenitic ferritic duplex stainless steel, which is widely used in a variety of harsh environments due to its excellent corrosion resistance, high strength and good processing properties.

Parameters and specifications of S21800 Stainless Steel Bar

• Chemical composition (%):
• Carbon (C): ≤0.10
• Silicon (Si): ≤1.00
• Manganese (Mn): 7.00-9.00
• Phosphorus (P): ≤0.040
• Sulfur (S): ≤0.030
• Chromium (Cr): 16.00-18.00
• Nickel (Ni): 8.50-10.00
• Nitrogen (N): 0.08-0.20

Physical properties of S21800 Stainless Steel Bar

• Density: 7.8 g/cm³
• Melting point: 1400-1450 ℃
• Coefficient of thermal expansion: 13.7μm /m·℃ (20-100 ℃)
• Thermal conductivity: 15 W/m·K (100 ℃)
• Resistivity: 0.80 μΩ·m (20 ℃)
• Magnetism: Weak magnetism

Mechanical properties of S21800 Stainless Steel Bar

• Tensile strength: ≥730 MPa
• Yield strength: ≥530 MPa
• Elongation: ≥25%
• Hardness: ≤290 HB

Specifications of S21800 Stainless Steel Bar

• Diameter: can be customized according to demand, common specifications are 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm and so on.
• Length: Generally 3000mm or 6000mm, can also be customized according to requirements.

Standards of S21800 Stainless Steel Bar

• ASTM A276/A276M: Standard Specification for Stainless Steel Bars and Profiles
• ASTM A479/A479M: Standard Specification for Stainless Steel Bars and Profiles for high-temperature use
• EN 10088-3: Stainless steel bars, wires, profiles and bright products

Characteristics of S21800 Stainless Steel Bar

• Excellent corrosion resistance: Excellent resistance to pitting corrosion, crevice corrosion and stress corrosion cracking in chloride environments.
• High strength: The yield strength is more than 2 times that of ordinary austenitic stainless steel.
• Good processing performance: can be cold processing, hot processing and welding.
• Good wear resistance: suitable for severe wear environment.
• Good fatigue strength: suitable for parts subjected to alternating loads.

Equal Grade of of S21800 Stainless Steel Bar

• UNS S21800
• EN 1.3964
• DIN X8CrMnNi18-9-5

Application of S21800 Stainless Steel Bar

• Marine engineering: seawater desalination equipment, seawater heat exchanger, Marine accessories, etc.
• Petrochemical: oil and gas mining equipment, chemical equipment, pipelines, etc.
• Environmental protection equipment: flue gas desulfurization equipment, sewage treatment equipment, etc.
• Paper industry: pulp equipment, bleaching equipment, etc.
• Food industry: food processing equipment, storage tanks, etc.
• Others: medical equipment, architectural decoration, etc.

Packaging of S21800 Stainless Steel Bar

• It is generally packed in wooden cases or steel belts to prevent damage during transportation.
• The specific packaging method can be customized according to customer requirements.

Precautions of S21800 Stainless Steel Bar

• S21800 stainless steel rod should be careful to avoid overheating during processing, so as not to affect its corrosion resistance.
• In the welding process, appropriate welding materials and processes should be selected to ensure the quality of welded joints.

S21800 stainless steel rod is a kind of biphase stainless steel material with excellent properties and has a wide application prospect. In the selection and use, should be based on the specific application environment and requirements, select the appropriate specifications, standards and processing technology, in order to give full play to its performance advantages.