What is the density of Duplex 2205?

7800 kg/m³ — the figure the weight calculators on this site use for Duplex 2205. The value is Alleima’s.

What is the chemical composition of Duplex 2205?

C ≤ 0.03, Si ≤ 1, Mn ≤ 2, P ≤ 0.03, S ≤ 0.02, Cr 22–23, Ni 4.5–6.5, Mo 3–3.5, N 0.14–0.2, in mass %, to ASTM A240 / UNS S32205. An element the standard sets no requirement for is left blank here rather than written as zero.

What are the mechanical properties of Duplex 2205?

Tensile ≥ 655 MPa, Yield ≥ 450 MPa, Elongation min ≥ 25 % — ASTM A240 / S32205, Plate/Sheet/Strip, Solution annealed. Those are the standard’s requirements; the mill test certificate governs the metal delivered.

Duplex 2205 — properties and composition

Designations

UNS: S32205/S31803
EN number: 1.4462
EN name: X2CrNiMoN22-5-3

Density

Density: 7800 kg/m³
Per: Alleima
Corrosion resistance: Very high
Product forms: Sheet, plate, pipe, bar

Chemical composition

Chemical composition — mass %
Standard	Product form	Basis	C	Si	Mn	P	S	Cr	Ni	Mo	N
ASTM A240 / UNS S32205	Plate/Sheet/Strip	Specification	≤ 0.03	≤ 1	≤ 2	≤ 0.03	≤ 0.02	22–23	4.5–6.5	3–3.5	0.14–0.2

mass %. A blank cell means the standard sets no requirement for that element, not zero. Single values are limits: "≤" a maximum, "≥" a minimum.

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Mechanical properties

Mechanical properties
Standard	Product form	Condition / temper	Test temperature	Yield	Tensile	Elongation min	Hardness max	Notes
ASTM A240 / S32205	Plate/Sheet/Strip	Solution annealed	20 °C	0.2% offset ≥ 450 MPa	≥ 655 MPa	25 % (Product dependent)	293 HBW	Minimum values typical for S32205 A240.
EN 10088-3 / vendor data	Bar/Billet	Solution annealed and quenched	20 °C	Rp0.2 ≥ 450 MPa	660–860 MPa	25 % (L0=5.65√S0)	270 HBW	Vendor reference aligned to EN/ASTM product standards.

Each row is one standard, one product form and one condition — the values do not transfer across rows. A blank cell means the standard sets no requirement.

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Physical properties

Physical properties
Temperature	Density	Young’s modulus	Poisson’s ratio	Thermal expansion (20–100°C)	Thermal conductivity (20°C)	Specific heat	Electrical resistivity (20°C)	Melting range	Magnetic
20 °C	7800 kg/m³	200 GPa	0.3	13 µm/m·°C	15 W/m·K	0.5 kJ/kg·°C	0.8 µΩ·m	1350–1450 °C	Magnetic

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Typical applications

Oil & gas, chemical, desalination, marine

Approximate equivalents

Approximate equivalents: equivalents are a technical reference, not a substitution instruction, verify against project specification.

Approximate equivalents
Grade	Systems	Relationship	Note	Key difference
Duplex 2205	UNS → EN	Same grade, another designation	Common duplex 2205 designation family.	S31803 and S32205 chemistry limits are not identical. Compared designation: 1.4462.

Common questions

01What is the density of Duplex 2205?: 7800 kg/m³ — the figure the weight calculators on this site use for Duplex 2205. The value is Alleima’s.
02What is the chemical composition of Duplex 2205?: C ≤ 0.03, Si ≤ 1, Mn ≤ 2, P ≤ 0.03, S ≤ 0.02, Cr 22–23, Ni 4.5–6.5, Mo 3–3.5, N 0.14–0.2, in mass %, to ASTM A240 / UNS S32205. An element the standard sets no requirement for is left blank here rather than written as zero.
03What are the mechanical properties of Duplex 2205?: Tensile ≥ 655 MPa, Yield ≥ 450 MPa, Elongation min ≥ 25 % — ASTM A240 / S32205, Plate/Sheet/Strip, Solution annealed. Those are the standard’s requirements; the mill test certificate governs the metal delivered.
04What is Duplex 2205 used for?: Oil & gas, chemical, desalination, marine