AISI 314 (1.4841) stainless steel is a heat-resistant austenitic stainless steel, designed to offer:
• Excellent creep rupture resistance.
• High corrosion resistance at elevated temperatures.
• Oxidation resistance up to 1150°C.
Thanks to its high chromium (24–26%) and nickel (19–22%) content, it exhibits good structural stability and excellent mechanical properties under severe thermal conditions.

Reference Standards:

• EN X15CrNiSi25-21
• AISI 314
• UNS S31400
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Chemical Composition (%)

Element Content (%)
Carbon (C) ≤0.20
Silicon (Si) 1.50–2.50
Manganese (Mn) ≤2.00
Phosphorus (P) ≤0.045
Sulphur (S) ≤0.015
Chromium (Cr) 24.0–26.0
Nickel (Ni) 19.0–22.0
Nitrogen (N) ≤0.11
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Mechanical Properties at 20°C

Property Value
Hardness HB30 ≤223
Yield Strength Rp0.2% ≥230 MPa
Tensile Strength (Rm) 550–750 MPa
Elongation (A5) ≥30%
Oxidation Resistance in Air Up to 1150°C
Modulus of Elasticity 196 GPa
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Physical Properties

at 20°C
Property Value
Density 7.9 g/cm³
Specific Heat Capacity 500 J/kg·K
Thermal Conductivity 15 W/m·K
Electrical Resistivity 0.9 Ω·mm²/m
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Key Features

• Resistant to scaling up to 1150°C.
• Excellent structural stability under thermal stress.
• Good weldability, recommended use of filler materials type 1.4842.
• Excellent hot workability.
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Available Formats

• Sheets / Plates
• Bars
• Wires
• Tubes / Pipes
• Fittings
• Forged or cast parts
• Custom-made components
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Industrial Applications

Thanks to its excellent heat and oxidation resistance, AISI 314 is used in:
• Furnace construction: radiant tubes, combustion chambers.
• Thermal equipment engineering.
• Glass and ceramics industry.
• Structural components for high temperatures.