Duplex (1.4462) Stainless Steel

Description

Duplex 1.4462 stainless steel combines the corrosion resistance of austenitic stainless with the strength of ferritic steel, making it a versatile solution for challenging environments. With double the yield strength of standard stainless grades and strong resistance to corrosion and stress cracking, it performs well in oil and gas production, desalination, and chemical handling systems. Its good weldability also allows for efficient fabrication and on-site maintenance.

Application：

Chemical processing
Oil and gas industry
Marine applications
The pulp and paper industry
Desalination plants
Construction industry

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Product Specification

Mechanical Properties

Property	Value
Tensile Strength	650 – 880 MPa (94 – 128 ksi)
Yield Strength (0.2% Proof)	≥ 450 MPa (65 ksi)
Elongation	≥ 20%
Hardness (Brinell)	≤ 270 HB
Elastic Modulus	200 GPa (29 × 10^6 psi)
Impact Energy (KV) at 20°C	≥ 100 J/cm²
Impact Energy (KV) at -40°C	≥ 40 J/cm²

Chemistry Composition

Element	Percentage
Chromium (Cr)	21.0 – 23.0%
Nickel (Ni)	4.5 – 6.5%
Molybdenum (Mo)	2.5 – 3.5%
Nitrogen (N)	0.1 – 0.22%
Carbon (C)	≤ 0.03%
Silicon (Si)	≤ 1.00%
Manganese (Mn)	≤ 2.00%
Phosphorus (P)	≤ 0.03%
Sulfur (S)	≤ 0.02%