AISI 310S / 1.4845 Heat-Resistant Steel

Stainless Steel AISI 310S / EN 1.4845 / 20X23N18: Properties, Applications, and Features

✅ General Technical Characteristics

Stainless steel AISI 310S (EN 1.4845, 20X23N18) is a high-alloy heat-resistant austenitic steel known for its excellent resistance to high temperatures and oxidation. Due to its increased chromium and nickel content, this steel retains its mechanical properties even under extreme operating conditions.

Main Characteristics:

• High heat resistance and thermal stability (up to 1100°C).
• Excellent resistance to oxidation and aggressive gases.
• Good corrosion resistance in high-temperature environments.
• High mechanical strength.
• Good weldability and machinability.

🔬 Chemical Composition AISI 310S / EN 1.4845 (%):

• Carbon (C): ≤ 0.08
• Silicon (Si): ≤ 1.5
• Manganese (Mn): ≤ 2.0
• Phosphorus (P): ≤ 0.045
• Sulfur (S): ≤ 0.015
• Chromium (Cr): 24.0 – 26.0
• Nickel (Ni): 19.0 – 22.0

💡 The high chromium content provides excellent thermal stability and corrosion resistance.

🏭 Applications

Steel AISI 310S (EN 1.4845, 20X23N18) is widely used in industries requiring materials with high heat resistance and strength.

Main Application Areas:

• Energy industry (boilers, heat exchangers, gas turbines).
• Chemical and petrochemical industries (furnaces, reactors, hot gas pipes).
• Metallurgy (furnace elements, heat-resistant components).
• Industrial equipment manufacturing (furnace parts, heat-resistant pipelines).
• Aerospace industry.

📊 Mechanical Properties

• Tensile Strength (Rm): 500 – 700 MPa
• Yield Strength (Rp0.2): ≥ 200 MPa
• Hardness (HB): ≤ 225 HB
• Elongation (A5): ≥ 40 %

⭐ Features

• Heat resistance – retains strength at high temperatures.
• Corrosion resistance – highly suitable for aggressive environments.
• Oxidation resistance – maintains properties even when heated up to 1100°C.
• Good weldability – easy to weld and machine.
• Durability – suitable for use under extreme loads and high temperatures.

Forms of delivery of AISI 310S / EN 1.4845 steel products