Alloy 2304 Duplex Stainless Plate

Alloy 2304 Duplex Stainless Plate

Alloy 2304 Duplex Stainless Plate General Properties Alloy 2304 is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel. The Alloy 2304 has corrosion resistance properties similar to 316L. Furthermore, its mechanical properties, i.e., yield strength, are twice those of 304/316...
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Alloy 2304 Duplex Stainless Plate

General Properties

Alloy 2304 is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel. The Alloy 2304 has corrosion resistance properties similar to 316L. Furthermore, its mechanical properties, i.e., yield strength, are twice those of 304/316 austenitic grades. This allows the designer to save weight, particularly for properly designed pressure vessel applications.


The alloy is particularly suitable for applications covering the -50°C/+300°C (-58°F/572°F) temperature range. Lower temperatures may also be considered but need some restrictions, particularly for welded structures.


With its duplex microstructure and low nickel and high chromium contents, the alloy has improved stress corrosion resistance properties compared to 304 and 316 austenitic grades.


Chemical Analysis

Typical Values (Weight %)

CarbonChromiumNickelMolybdenumNitrogenOthers
0.0202340.20.1S=0.001
PREN = [Cr%] = 3.3 [Mo%] = 16 [N%] ≥ 24





Mechanical Properties

Tensile Properties (Minimum Values)

°CRp 0.2
MPa
Rp 1.0
MPa
Rp 1.0
MPa
°FYS 0.2%
Offset KSI
YS 0.1%
Offset KSI
UTS
KSI
Elongation
%
204004406006858648725
10033036557021248538325
20028031053039241457720
30023026049057233387120

Values obtained for hot rolled plates (th ≤ 2"). Alloy 2304 must not be used for a long time at temperatures higher than 300°C (572°F), where precipitation hardening phenomenon occurs.


Toughness Values (KCV Minimum Values)

Temp.-50°C+20°C-60°F+70°F
Single75 J/cm_90 J/cm_54 ft. lbs65 ft. lbs
Average (5)90 J/cm_150 J/cm65 ft. lbs87 ft. lbs


Hardness (Typical Values)

Average (5)HV10 180-230HB : 180-230HRC _ 20


Physical Properties

Density : 7,800 kg/m3 - 0.28 lb/in3

Interval
Temper
°C
Thermal
expansion
ax10M-bK-1
°C

Resistivity

(μ_ cm)
Thermal
conductivity
(W.m-1.K-1)
Specific
heat
(J.kg-1.K-1
Young
modulus
E
(GPa)
Shear
modulus
G
(GPa)
20-1001320801745020075
20-10013100921850019073
20-20013.52001001953018070
20-300143001052056017067


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