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X1NICRMOCU31-27-4 EN 10028-7 1.4563 EN1092-1 Type 11 Flange
1.4563 is a high-alloy austenitic stainless steel (also known as X2CrNiMnMoNNb21-16-5-3) developed for excellent corrosion resistance, especially in chloride-containing and acidic environments.
Chemical Composition
Element
Content (%)
C (Carbon)
≤ 0.03
Si (Silicon)
≤ 0.7
Mn (Manganese)
2.0 – 7.0
P (Phosphorus)
≤ 0.03
S (Sulfur)
≤ 0.01
Cr (Chromium)
20 – 22
Ni (Nickel)
14 – 17
Mo (Molybdenum)
4.0 – 6.0
N (Nitrogen)
0.35 – 0.55
Nb (Niobium)
0.1 – 0.4
Fe (Iron)
Balance
Key Composition Benefits
High Chromium (≈21%) + Molybdenum (≈5%) provide strong resistance to pitting and crevice corrosion, especially in chlorides (e.g., seawater, process brines)
High Nickel (≈15–16%) stabilizes the austenitic structure and improves toughness
Added Nitrogen (0.35–0.55%) boosts strength and further improves pitting resistance
Niobium contributes to stabilization against intergranular corrosion and helps control microstructure
For exact values required for design or certification, always check a mill certificate or the relevant material standard (e.g., EN 10088) for the specific product and supplier. Small variations within these ranges are normal and can be critical in specific applications.
Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.
The C...
Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.
The C...
