ASTM A240 Hot Rolled S23043 S32304 1.4362 Stainless Steel Plate Cutting to Circle

Model NO.
S23043 S32304
Surface Treatment
Pickling
Transport Package
Wooden Pallet Wooden Box
Specification
1220*2440, 1500*3000, 1500*6000, 2000*6000mm
Origin
China
HS Code
7219340000
Production Capacity
50000kgs
Reference Price
$ 2.03 - 6.17
Contact Us

Product Description

Alloy 2304 (UNS S32304) 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 304L/316L austenitic grades. This allows the designer to save weight, particularly for properly designed pressure vessel applications.

Chemical Analysis

Typical Values (Weight %)

Carbon Chromium Nickel Molybdenum Nitrogen Others
0.020 23 4 0.2 0.1 S=0.001
PREN = [Cr%] = 3.3 [Mo%] = 16 [N%] ≥ 24

Mechanical Properties

Tensile Properties (Minimum Values)

°C Rp 0.2
MPa 		Rp 1.0
MPa 		Rp 1.0
MPa 		°F YS 0.2%
Offset KSI 		YS 0.1%
Offset KSI 		UTS
KSI 		Elongation
%
20 400 440 600 68 58 64 87 25
100 330 365 570 212 48 53 83 25
200 280 310 530 392 41 45 77 20
300 230 260 490 572 33 38 71 20

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
Single 75 J/cm_ 90 J/cm_ 54 ft. lbs 65 ft. lbs
Average (5) 90 J/cm_ 150 J/cm 65 ft. lbs 87 ft. lbs

Hardness (Typical Values)

Average (5) HV 10   180-230 HB : 180-230 HRC _ 20

Physical Properties

Density : 7,800 kg/m 3   - 0.28 lb/in 3

Interval
Temper
°C 		Thermal
expansion
ax10M -b K -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)
20-100 13 20 80 17 450 200 75
20-100 13 100 92 18 500 190 73
20-200 13.5 200 100 19 530 180 70
20-300 14 300 105 20 560 170 67

Structure

The chemical analysis of 2304 is optimized to obtain a typical 50 a / 50 g microstructure after solution annealing treatment at 950°/1050°C (1742°/1922°F).

The microstructure of 2304 duplex is very stable compared to molybdenum-containing duplex stainless steels. Intermetallic phases are present only after 10 hours holding time in the 750°/850°C (1382°/1562°F) temperature range. Copper additions to 2304 grade, when specified, increase the hardness of the steel after heat treatment in the 350°/500°C (662°/932°F) temperature range.

Processing

Hot Forming

Hot forming must be performed in the 1150/900°C (2100/1650°F) temperature range. After forming, a new solution annealing treatment is recommended in the 950°/1050°C (2100°/1650°F) temperature range to fully restore corrosion resistance properties and mechanical properties. Parts formed with 2304 must be supported carefully during heating to avoid creep deformation.

Cold Forming

Alloy 2304 may be cold formed without any problem. The same equipment as used for the cold forming of 304L and 316L grades can be used. Due to its higher mechanical properties, including the yield strength, higher stresses are required for cold forming. A final solution annealing heat treatment is also recommended after cold forming in order to restore the mechanical and corrosion resistance properties, as decribed in 'hot forming.'

Descaling

Use the same solutions and pastes as for Alloys 304L/316L. The pickling time will be higher than for austenitic grades due to the corrosion resistance properties of the alloy.

Machinability

Alloy 2304 duplex exhibits improved machinability properties particularly when considering drilling. Its behavior is equivalent to that of 316LEZ*. Furthermore, 2304 has better corrosion resistance and cleanliness properties as no sulphur additions are necessary. Localized corrosion resistance behavior is improved.
ASTM A240 Hot Rolled S23043 S32304 1.4362 Stainless Steel Plate Cutting to Circle ASTM A240 Hot Rolled S23043 S32304 1.4362 Stainless Steel Plate Cutting to Circle

 

Stainless Steel