What material is 1.4482 equivalent to?

1.4482 (S32001 / LD24) is a cost‑effective lean‑duplex stainless steel engineered with balanced austenitic‑ferritic microstructure. It delivers significantly higher mechanical yield strength compared with conventional austenitic grades such as 304L and 316L, accompanied by moderate chloride‑resistance performance superior to 304L. Under moderately corrosive working environments, it acts as a competitive economical substitute for 316L austenitic stainless steel as well as standard duplex grade 1.4462. This material enables thinner‑wall component design to reduce overall material weight and project costs, while maintaining reliable structural integrity.

 

Equivalent Grades of 1.4482 stainless steel

Standard	Grade
EN European	1.4482 / X2CrMnNiMoN21‑5‑3
ASTM / UNS	S32001 (LD24)
Chinese GB	‑ no direct national equivalent

Available forms: seamless & welded tubes, plates, sheets, round bars, forgings, profiles.

 

Chemical Composition of 1.4482 stainless steel

Element	C	Si	Mn	P	S	Cr	Ni	Mo	N
Content	≤0.030	≤1.00	≤2.00	≤0.030	≤0.020	21.0‑23.0	3.0‑5.0	1.5‑2.5	0.10‑0.20

PREN≈24. Ultra‑low carbon, balanced austenite‑ferrite microstructure. Corrosion performance superior to 304L, comparable or slightly below 316L for chloride‑containing mediaSverdrup S...

 

Mechanical Properties(solution‑annealed condition, room temperature for plate) of 1.4482 stainless steel

Property	Value
Tensile Strength Rm	650‑850 MPa
0.2% Offset Yield Strength Rp0.2	≥450 MPa
Elongation A	≥30 %
Brinell Hardness HBW	≤290

Yield strength roughly twice of 316L / 1.4404; cannot be hardened by heat treatment. Avoid long‑term exposure in 300‑950 ℃ to prevent sigma‑phase embrittlement. Solution annealing: 950‑1050 ℃, rapid cooling required

 

Physical Properties (20 ℃) of 1.4482 stainless steel

Item	Parameter
Density	7.80 g/cm³
Modulus of Elasticity	200 GPa
Coefficient of Linear Expansion	13.0×10⁻⁶ /℃ (20‑100℃)
Thermal Conductivity	15.0 W/(m·K)
Melting range	1370‑1420 ℃
Microstructure	50/50 austenitic‑ferritic duplex, magnetic
Max long‑term service temperature	≤280 ℃

 

What is the strength advantage of 1.4482 stainless steel?

It features remarkable high strength. Its yield strength reaches up to 450 MPa, which is approximately twice that of austenitic stainless steels such as 316L (200 MPa). This superior mechanical property allows thinner-wall design and greatly reduces the overall weight of structural components.

 

How is 1.4482 corrosion resistance in chloride environments?

It delivers enhanced corrosion resistance with a typical PREN value of 28–30. Its anti-corrosion performance is close to 2205 duplex steel, providing excellent protection against pitting corrosion and crevice corrosion in various chloride-containing working environments.

 

Does 1.4482 resist stress corrosion cracking?

Yes. The unique duplex microstructure endows the steel with inherent and reliable resistance to chloride-induced stress corrosion cracking, performing far better than conventional austenitic stainless steel grades.

 

What is the cost-performance advantage of 1.4482?

It is a highly cost-effective material. Compared with 2205 duplex steel, it contains lower nickel and molybdenum content, which cuts material costs significantly while maintaining upgraded mechanical and corrosion-resistant performance.

 

1.Oil & Gas: Piping systems, flowlines, and process equipment in moderately corrosive environments.

2.Chemical Processing: Tanks, heat exchangers, and piping for chemical handling.

3.Marine & Offshore: Seawater piping, pumps, valves, and components in splash zones.

4.Desalination: High-pressure piping and evaporator components.

5.Pulp & Paper:Process equipment and storage tanks for aggressive liquors.

6.Pollution Control:FGD scrubber components and ducting.

7.Structural Engineering:Bridges and structures in coastal or industrial environments.

GNEE is a professional manufacturer and exporter of 1.4482 lean duplex stainless steel. We provide a comprehensive portfolio of plates, coils, pipes, bars and custom‑engineered forgings. Boasting high mechanical strength and cost‑effective performance, this grade delivers better corrosion resistance compared with 304L stainless steel. Our materials are extensively applied in coastal infrastructure, water‑treatment facilities and chemical storage projects across the globe. Bulk orders, small‑batch trial orders and sample deliveries are all accepted.

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How does 1.4482 compare to 1.4462 and 316L (1.4404)?
1.4482 offers performance between lean duplex 2304 and standard duplex 2205. It provides approximately twice the yield strength of 316L (450 MPa vs. 200 MPa), similar to 2205. Its corrosion resistance (PREN 28-30) is significantly better than 316L (PREN 24-26) and approaches that of 2205 (PREN 34-35). It offers better resistance to stress corrosion cracking than both 316L and 2205 in many environments. While 2205 provides superior corrosion resistance for the most severe applications, 1.4482 offers a cost-effective alternative with enhanced performance over 316L. It is typically more economical than 2205 while providing sufficient corrosion resistance for many applications that would otherwise require the higher alloy content.

 

What are the welding considerations for 1.4482 stainless steel?
1.4482 has good weldability and can be welded using common methods. Recommended practices include using matching or slightly over-alloyed filler metals (typically 2209 type), controlling heat input (0.5-2.0 kJ/mm), and maintaining interpass temperature below 150°C. Shielding gas with nitrogen addition (typically Ar + 2-3% N2) helps maintain nitrogen content in the weld metal. Preheating is generally not required, and post-weld heat treatment is not necessary. The balanced composition provides good resistance to hot cracking and maintains a favorable ferrite-austenite balance in the weld zone. For optimum corrosion performance in severe environments, over-alloyed filler metals may be considered to ensure the weld zone meets corrosion requirements.