quality EN 1092 Class 150 Corrosion Resistant Alloy 625 Forged Flange factory

EN 1092 Class 150 Corrosion Resistant Alloy 625 Forged Flange

Alloy 625 (Inconel 625) EN 1092 Class 150 forged flange offers excellent strength and corrosion resistance in harsh environments like high temperatures, seawater, and acids. Its nickel-chromium-molybdenum-niobium composition provides solid-solution strengthening without heat treatment.

Product Details

Highlight:

EN 1092 Class 150 forged flange

,

Corrosion resistant Alloy 625 flange

,

Blind pipe flange with warranty

Product Description

Alloy625 EN 1092 Class 150 Forged Flange

Alloy 625, more commonly known as Inconel 625 (UNS N06625, W.Nr. 2.4856), is a nickel-based superalloy designed for excellent strength and corrosion resistance, especially in harsh environments including high temperatures, seawater, and acidic conditions.

Chemical Composition

The chemical composition is typically given in weight percent. Exact values can vary slightly by standard (ASTM, AMS, ISO) and producer, but the usual specification range is:

Element	Composition Range
Nickel (Ni)	Balance (usually around 58–63%)
Chromium (Cr)	20.0 – 23.0%
Molybdenum (Mo)	8.0 – 10.0%
Niobium (Nb) + Tantalum (Ta)	3.15 – 4.15%

Smaller Additions and Limits

Iron (Fe): up to about 5.0% (often lower in practice)
Cobalt (Co): up to 1.0% max
Manganese (Mn): up to 0.5% max
Silicon (Si): up to 0.5% max
Aluminum (Al): up to 0.4% max
Titanium (Ti): up to 0.4% max

Impurity Limits

Carbon (C): ≤ 0.10% (many specs tighten this, e.g., ≤ 0.05%)
Phosphorus (P): ≤ 0.015%
Sulfur (S): ≤ 0.015%

Composition Significance

High Ni + Cr: Excellent oxidation and corrosion resistance, especially at high temperatures
Mo + Nb: Solid-solution strengthening, providing high strength without heat treatment; boosts resistance to pitting and crevice corrosion in chloride and acidic environments
Very low C, P, S: Improves weldability and resistance to intergranular corrosion

Important Note: For project-specific requirements (pressure vessels, aerospace parts, welding procedures), always verify the exact composition against the specific standard or material test certificate (MTC) from your supplier, as different product forms (bar, plate, weld wire) may follow slightly different specifications.