What material is 1.4529 equivalent to?

What is 1.4529 Stainless Steel?

1.4529 (UNS N08926) is a high-performance super-austenitic stainless steel-often referred to as 1925hMo or 6Mo/AL-6XN-characterized by extremely high nickel, chromium, and molybdenum content. Specifically engineered for use in exceptionally harsh corrosive environments, this material exhibits superior resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in chloride-containing media, seawater, and acidic environments containing H2S.

 

What material is 1.4529 equivalent to?

1.4529 is a high-molybdenum super-austenitic stainless steel (often also referred to as a nickel-based alloy), primarily corresponding to the US standard UNS N08926, the German standard DIN 1.4529, or the commercial grade Incoloy 926. Building upon the composition of 904L, it increases the molybdenum content to approximately 6.5%, demonstrating exceptional performance in severely corrosive environments such as those found in desulfurization and flue gas purification processes.

 

Chemical composition % of steel X1NiCrMoCuN25-20-7 (1.4529): EN 10088-2-2005

Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast.

C	Si	Mn	Ni	P	S	Cr	Mo	N	Cu
max 0.02	max 0.5	max 1	24 - 26	max 0.03	max 0.01	19 - 21	6 - 7	0.15 - 0.25	0.5 - 1.5

 

1.4529 Stainless Steel Mechanical Properties

Alloy 926 (1.4529) offers superior mechanical properties compared to standard austenitic stainless steels, making it suitable for demanding applications.

Product Form	Yield Strength Rp0.2 (MPa)	Yield Strength Rp0.2 (ksi)	Tensile Strength Rm (MPa)	Tensile Strength Rm (ksi)	Elongation A (%)
Sheet (≤ 50 mm)	≥ 300	≥ 43.5	600-800	87-116	≥ 40
Strip (≤ 3 mm)	≥ 300	≥ 43.5	600-800	87-116	≥ 40
Bar (≤ 300 mm)	≥ 300	≥ 43.5	600-800	87-116	≥ 40

 

1.4529 Stainless Steel Physical Properties

Property	Value
Density	8.1 g/cm³ (506 lb/ft³) at 20°C (68°F)
Melting Range	1,320-1,390°C (2,408-2,534°F)
Relative Magnetic Permeability	1.001 at 20°C (68°F)
Thermal Conductivity at 20°C (68°F)	12.0 W/(m·K)
Electrical Resistivity	96 μΩ·cm at 20°C (68°F)
Modulus of Elasticity	193 GPa (28.0 × 10⁶ psi)

 

1.4529 Stainless Steel Heat Treatment

For optimal corrosion resistance, Alloy 926 requires proper heat treatment. Solution annealing should be performed at temperatures between 1,150-1,200°C (2,102-2,192°F), preferably at 1,180°C (2,156°F).

 

What is the difference between AL6XN and 316L stainless steel?

AL-6XN is a superaustenitic stainless steel with superior corrosion resistance and higher strength compared to 316L. It contains more nickel, chromium, and molybdenum (approx. 6%), providing high resistance to seawater and chloride pitting. 316L is a standard, lower-cost austenitic stainless steel, suitable for less severe environments.

 

254 SMO vs AL-6XN

Both 254 SMO (UNS S31254) and AL-6XN (UNS N08367) belong to the family of high-performance "6% molybdenum" super-austenitic stainless steels, exhibiting excellent resistance to chloride pitting, crevice corrosion, and stress corrosion cracking. AL-6XN, owing to its higher nickel and molybdenum content, typically possesses slightly superior overall corrosion resistance and strength. Both alloys are frequently utilized in demanding applications within the chemical processing, seawater desalination, and offshore oil platform industries.

 

1.4529 stainless steel Applications

Marine & Offshore: Fasteners, piping systems, and structures in warm seawater or high-salt environments.
Chemical Industry: Equipment for handling sulfuric acid and high-chloride process streams.
Environmental: Components in flue gas desulfurization (FGD) plants.
Food & Pharmaceutical: Equipment needing high resistance to cleaning agents.

 

As a major enterprise specializing in steel trading and processing, GNEE possesses robust supply capabilities in the fields of specialty stainless steels and super-austenitic stainless steels. With regard to 1.4529 (Super-Austenitic Stainless Steel / Alloy 926 / 6Mo Steel), GNEE typically offers the following products and services:

1. Primary Product Forms

1.1 Plates/Sheets: Including hot-rolled and cold-rolled sheets. We can supply materials in original mill dimensions or provide custom cutting services (e.g., cut-to-size) based on client requirements.
1.2 Pipes/Tubes: Seamless and welded tubes. These are frequently utilized in highly corrosive environments, such as seawater treatment systems and chemical processing equipment.
1.3 Bars/Rods: Round, square, and hexagonal bars. Available in various finishes, including black, bright, or ground finishes.
1.4 Fasteners: Bolts, nuts, and washers manufactured from 1.4529 material.

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