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Payment Type: L/C,T/T,Western Union
Transportation: Ocean,Land,Air
Model No.: Super Duplex Tube
Brand: YUHONG
Usage: Mining
Technique: Cold Rolled
Material: Stainless Steel
ASTM A789 / ASME SA789 UNS S32304 / 1.4362 / SAF2304 Duplex Steel Tube
ASTM A789 / ASME SA 789 Alloy 2304 UNS S32304 / SAF2304 is a 23% chromium, 4% Nickel, molybdenum-free duplex stainless steel.
The Alloy 2304
has corrosion resistance similar to 316L. Furthermore, its mechanical properties, yield strength, are twice those of 304L/316L austenitic grades.
This allows the designer to save weight, particularly for properly designed pressure vessel applications.
UNS S32304, is a lean duplex steel, similar to other duplex steels with it's high strength and resistance to chlorides stress corrosion cracking, however, due to its lower alloying content it has a lower level of pitting and crevice corrosion resistance (PREN approximately 26). As it contains very little Molybdenum, 2304 is a good economical alternative to 316L in some applications although 2304 is not recommended for use above 300°C. Also known by the the Uranus 35N and SAF2304.
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, low nickel and high chromium contents, the alloy has improved stress corrosion resistance properties compared to 304 and 316 austenitic grades.
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. Alloy 2304 duplex stainless steel successfully passes most of the standard IC test procedures such as ASTM, A262E, and C tests. Its corrosion rate in boiling nitric acid (65%) is higher than that of Alloy 316L. Due to its high yield strength, the alloy performs well in abrasion/corrosion applications.
Applications
Generally where 304 and 316L are used
Pulp and paper industry (chip storage tanks, white and black liquor tanks, digestors)
Caustic solutions, organic acids (SCC resistance)
Food industry
Pressure vessels (weight savings)
Mining (abrasion/corrosion)
Standards
ASTM/ASME.......... A240 - UNS S32304
EURONORM...........1.4362 - X2 Cr Ni 23.4
AFNOR...................Z3 CN 23.04 Az
DIN.........................W. Nr 1.4362
Require Quotation, Please send message to : luis.bao@ steelseamlesspipe. com
Stress corrosion resistance test results in chloride containing aqueous solutions ((8ppm 02) PH =7, >1000 h, applied stresses higher than the yield strength) show that Alloy 2304 outperforms Alloys 304L and 316L, due to its high chromium additions and low nickel contents.This is a typical feature of duplex stainless steels. Alloy 2205 performs still better than 2304 in similar conditions.
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,035 | max. 0,015 | 22,00 - 24,00 | 0,10 - 0,60 | 3,50 - 5,50 | 0,05-0,20 | 0,10-0,60 |
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 250 | max. 0,040 | max. 0,040 | 21,50 - 24,50 | 0,50 - 0,60 | 3,00 - 5,50 | 0,05-0,20 | 0,50-0,60 |
Product Information for Lean Duplex 2304 tubing and pipe
| Sizes | Standard Tolerances | ||||||
| Products | OD | Wall | Lengths and/or coils | Grades | OD | Wall | Lengths |
| Heat Exchanger Tubes & Condenser Tubing Specifications:ASTM A1789 and ASME SA789 | 0.5" (6 mm) to 12 " (323.85 mm) Metric sizes available | 0.020" (0.51 mm) to 1.312 " (33.325 mm) | Cut lengths to Cutomer Required | Lean Duplex 2304 | - | ±10% | - |
| Tensile Strength | Yield Strength | |||||||||||
| Alloy | UNS | Spec. | MPa | ksi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Condu ctivity (BTU-in/ ft2-h-°F) |
| Lean Duplex 2304 OD=1" & under | S32304 | A789, A790 | 690 | 100* | 450 | 65* | 25 | - | 27.5 | 7.6 | 180 | |
| Lean Duplex 2304 OD>1" | S32304 | A789, A790 | 600 | 87 | 400 | 58* | 25 | - | 290 HBW, 30 HRC | 27.5 | 7.6 | 180 |
*OD over 1.0"Tensile Strength >c87, Yiled Strength > 58, no hardness requirement 1.0" OD and under
The Normal Dimension for Heat Exchangers and Condensers as below
| Size: 1/4″ × 0.035″ | |
| Size:3/8″ × 0.035″ | |
| Size:1/2″ × 0.035″ | |
| Size: 5/8″ × 0.035″ | |
| Size: 3/4″ × 0.035″ | |
| Size: 1″ × 0.035″ | |
| Size: 5/16″ × 0.035″ | |
| Size: 1/4″ × 0.049″ | |
| Size: 3/8″ × 0.049″ | |
| Size: 1/2″ × 0.049″ | |
| Size: 5/8″ × 0.049″ | |
| Size: 3/4″ × 0.049″ | |
| Size:1″ × 0.049″ | |
| Size: 1/4″ × 0.065″ | |
| Size: 3/8″ × 0.065″ | |
| Size: 1/2″ × 0.065″ | |
| Size: 5/8″ × 0.065″ | |
| Size: 3/4″ × 0.065″ | |
| Size: 1″ × 0.065″ | |
| Size: 1″ × 0.120″ |
| Package Type | : | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
|---|
Packaging: Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Transportation: Ocean,Land,Air
Place of Origin: China
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Payment Type: L/C,T/T,Western Union
Incoterm: FOB,CFR,CIF,EXW
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