AISI 314 stainless steel (1.4841) is a heat-resistant austenitic stainless steel , designed to offer:
• Excellent resistance to creep cracking.
• High corrosion resistance at high temperatures.
• Oxidation resistance up to 1150°C.
Thanks to its high chromium (24–26%) and nickel (19–22%) content, it has 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
Sulfur (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%
Resistance to oxidation 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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Main features

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

• Sheet metal / Plates
• Bars
• Wires
• Tubes / Pipes
• Fittings
• Forged or cast parts
• Custom-made components
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Industrial applications

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