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X2CrNiMoN17-13-3 EN 10222-5 1.4429 Corrosion Resistant Stainless Steel Lap Joint Flange EN1092-1 Type 01

Product Summary
X2CrNiMoN17-13-3 (1.4429) stainless steel flange offers superior corrosion resistance in chloride environments with enhanced strength from nitrogen alloying. Low carbon prevents intergranular corrosion, while molybdenum provides excellent pitting resistance. Ideal for chemical plants, offshore applications, and cryogenic uses.

Product Details

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X2CrNiMoN17-13-3 Stainless Steel Flange

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EN 10222-5 1.4429 Lap Joint Flange

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Corrosion Resistant EN1092-1 Type 01 Flange

Product Description
X2CrNiMoN17-13-3 EN 10222-5 1.4429 Stainless Steel Flange EN1092-1 Type 01
Material Overview

1.4429 is a stainless steel grade designation (according to EN standard) that corresponds closely to AISI 316LN. It is an austenitic stainless steel designed for excellent corrosion resistance, particularly in chloride-containing environments, and applications requiring higher mechanical strength.

Chemical Composition

Typical chemical composition of 1.4429 (in weight %):

Element Content Range
Carbon (C) max. 0.03%
Chromium (Cr) 16.5–18.5%
Nickel (Ni) 10.0–13.0%
Molybdenum (Mo) 2.0–2.5%
Nitrogen (N) 0.10–0.22%
Manganese (Mn) max. 2.0%
Silicon (Si) max. 1.0%
Phosphorus (P) max. 0.045%
Sulfur (S) max. 0.015–0.030%
Key Element Functions
  • Carbon (C): Low carbon content improves resistance to intergranular corrosion by reducing carbide precipitation at grain boundaries
  • Chromium (Cr): Primary element for corrosion resistance and passivation - the fundamental property that makes it "stainless"
  • Nickel (Ni): Stabilizes the austenitic structure, enhances toughness, and contributes to corrosion resistance
  • Molybdenum (Mo): Significantly improves resistance to pitting and crevice corrosion, especially in chloride environments like seawater and saline atmospheres
  • Nitrogen (N): Key differentiator from standard 316/316L - increases strength (particularly yield strength) and further enhances pitting corrosion resistance
  • Manganese (Mn) & Silicon (Si): Aid in deoxidation during steelmaking and help stabilize the austenitic structure
  • Phosphorus (P) & Sulfur (S): Kept at low levels to prevent negative impacts on toughness and corrosion resistance
Performance Advantages

Compared with 1.4404 / 316L, the added nitrogen in 1.4429 provides:

  • Higher mechanical strength
  • Enhanced pitting corrosion resistance

The combination of low carbon content plus molybdenum and nitrogen makes this material ideal for aggressive environments including chemical plants, offshore applications, medical devices, and cryogenic applications where both corrosion resistance and strength are critical.

Quality Assurance

For exact composition values from specific suppliers or standards (e.g., EN 10088-3), always verify the mill certificate or technical datasheet, as minor ranges can vary slightly by standard and manufacturer.

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