Duplex Alloy 2304 UNS EN SAE S32304 ASTM A240 overview
Stainless steel grade Duplex 2304 is a duplex stainless steel type with a structure that is a balance of ferritic and austenitic. It has high strength and toughness, resistance to stress corrosion cracking, high thermal conductivity, low thermal expansion, and easy fabrication. It is recommended that this steel is not used in areas where the steel would be exposes to temperatures over 1058°C (570°F) for prolonged periods.
Duplex Alloy 2304 As a two-phase, ferritic, austenitic 23% chromium, 4% nickel, molybdenum-free duplex stainless steel. It has similar corrosion resistance properties to 316L. Furthemore, its mechanical properties are twice those of 304L/316L austenitic grades. This allows the designer to save weight, particularly for properly designed pressure vessel applications. The alloy is partcularly suitable for applications covering the -50 °C/+300 °C temperature range.
PRODUCT FORMS:
Coil , Sheet, plate , Strip .wire ,- Profile, Round, Flat, Square
Duplex Alloy 2304 UNS EN SAE S32304 ASTM A240 Specification and Dimension Ranges
Specififcation We follow to provide Duplex stainless steel 2304 :
- ASTM A240
- ASTM A276
- ASTM A480
- ASTM A789
- ASTM A790
- DIN 1.4362
Equivalent materials to stainless steel grade Duplex 2304 are given below:
-
DIN 1.4362
-
DIN X2CrNiN23-4
-
AFNOR Z2CN23-04AZ
-
SS 2327
-
SAE S32304
-
EN X2CrNiN23-4
-
EN 1.4362
-
UNS S32304
Dimension Ranges:
| Width | Thickness | Inner Diameter | Steel Grade | Surface Finish |
| 610~2030 mm | 0.15~3.0 mm | 610 or 508 +0/-5 mm | 201; 254 SMO; 301; 301 AL; 301Si; 302; 303; 303 SE; 304; 304 L; 304 LV; 304 V; 3049; 305;30512; 308; 309; 309 S; 309 SCB; 310; 310 S; 316; 316 L; 316 LN; 316 Ti; 317; 317 L; 321; 330; 347; 384; 405; 409; 410; 410 S; 414;416; 416 SE; 420; 420 A; 420 HC; 420 LC; 420 MO; 430; 430Li; 434; 436; 439; 440 A; 440 C; 441; 442; 444; 446; 18 SR1;Carpenter 20,CB32; Carpenter 4552; Custom 450; 18-9LW1; 19-90L4; Greek Ascology;; AL-6XN4; 904L; Duplex 2205; Duplex 2304; Duplex 2507,Nickel alloys , Titanium and Ti alloys | 2B, 2D, BA, No.3, No.4, No.5, SB, HL |
| 610~2030 mm | 2.5mm~10 mm | 610 or 508 +0/-5 mm | | No.1 or As requied |
Coil Slitting Mill Capability :
Striping processing, commonly known as “slitting “, refers to the winding of a metal coil by unwinding, slitting, leveling, winding, and processing into a desired width. Slitting processing is a basic metal processing technology that combines high-quality equipment with skilled craftsmanship. it can be obtained with strict tolerance, perfect surface control , safe packaging as well as fine transportation.
- Max thickness: 18 mm
- Min thickness: 0.1 mm
- Max width: 2150 mm
- Min width: 8 mm
- Width tolerance: 0 – 0.1 mm
- Burr: T<1mm: ≤0.05mm; T≥1mm: ≤5%T
Duplex Alloy 2304 UNS EN SAE S32304 ASTM A240 Application
Stainless steel grade Duplex 2304 is used by various industries including pulp and paper, coal handling, potash, food and beverage, and waste water.
The specific applications are as follows:
- Bridges
- Storage tanks
- Water heaters
- Heat exchangers
- Pressure vessels
- Feedwater tubes
- Heat exchangers
- Flue-gas cleaning
- Seawater systems
- Desalination plants
- Parts for structural design
- Rotors, impellers and shafts
- Firewalls and blast walls on offshore platforms
- Cargo tanks and pipe systems in chemical tankers
- Piping and instrumentation tubing for general service
Duplex Alloy 2304 UNS EN SAE S32304 ASTM A240 Technical datasheet
Chemical Composition
The chemical composition of stainless steel grade Duplex 2304 is outlined in the following table.
| Element | Content (%) |
| Iron, Fe | 72.679 |
| Chromium, Cr | 23 |
| Nickel, Ni | 4 |
| Molybdenum, Mo | 0.20 |
| Nitrogen, N | 0.1 |
| Carbon, C | 0.02 |
| Sulfur, S | 0.001 |
Mechanical Properties
The mechanical properties of stainless steel grade Duplex 2304 are displayed in the following table.
| Properties | Metric | Imperial |
| Tensile strength | ≥ 600 MPa | ≥ 87000 psi |
| Yield strength (@strain 0.200 %) | ≥ 400 MPa | ≥ 58000 psi |
| Modulus of elasticity | 200 GPa | 29000 ksi |
| Shear modulus (@temperature 20°C/ 68°F) | 75.0 GPa | 10900 ksi |
| Poisson’s ratio | 0.333 | 0.333 |
| Elongation at break | ≥ 25 % | ≥ 25 % |
| Hardness, Rockwell C | ≤ 20.0 | ≤ 20.0 |
| Hardness, Brinell | 180 - 230 | 180 - 230
|
Duplex Alloy 2304 UNS EN SAE S32304 ASTM A240 Products display and Package Details
Packaging (details)
1. Pallets with several coils
1.1 Coils packed eye to sky on one-way pallet with spacers without pallet cover.
1.2 Coils packed eye to sky on one-way pallet with spacers and covered with shrink-wrap.
1.3 Coils packed eye to sky on one-way pallet with spacers and covered with paper hood.
1.4 Coils packed eye to sky on one-way pallet with spacers and covered with wooden box.
1.5 Coils packed eye to sky on pallet with spacers without cover.
1.6 Coils packed eye to sky on pallet with spacers and shrink wrap.
1.7 Coils packed eye to sky on pallet with spacers and paper hood.
2. Pallet with single coil
2.1 Coil packed eye to sky on one-way-pallet without cover.
2.2 Coil packed eye to sky on one-way-pallet with shrink wrap.
2.3 Coil packed eye to sky on one-way-pallet with paper hood.
2.4 Coil packed eye to sky on one-way-pallet with wooden box.
2.5 Coil packed eye to sky on pallet without cover.
2.6 Coil packed eye to sky on pallet with shrink wrap.
2.7 Coil packed eye to sky on pallet with paper hood.
3. Pallets with multistrip
3.1 Multistrip on one-way pallet.
4. Coils standing, unpacked
5. Pallets with spools, standing with horizontal axe
5.1 Wooden spool on one-way pallet standing with horizontal (eye to the wall) axe.
5.2 Cardboard spool (cardboard core and cardboard sheet) on one-way pallet standing (eye to the wall).
6. Cut lengths
6.1 Bundled.
6.2 On wooden boards.
6.3 In wooden boxes.
7. Special customer requests for packaging
7.1 Weight per packing unit.
7.2 Design and size of pallet.
7.3 Number and kind of coil tying.
7.4 Number and kind of interleaving spacer strips.
7.5 Corrosion protection.
7.6 Kind of wood and wood protection used.
7.7 Marking of material and packing.
General Q and A Questions
Q: Would you provide samples For free?
A: Yes. with on stock specification We provide samples For Free. Freight charge collect
Q: What information should i provide to source for the right products?
A: Material grade, width, thickness, coating and Purchase quantity, Expected lead time, etc
Q: What are the shipping ports?
A: Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you
can choose other ports according to your needs.
Q: About product prices?
A: Prices vary from period to period due to cyclical changes in the price of raw materials.
Q: How long does your delivery time take?
A: In general, our delivery time is within 5-45 days, and may be delayed if the demand is extremely
large or special circumstances occur.
Q: Can I visit your location?
A: Of course, we welcome customers from all over the world to visit our factory. However, some
of the plants are not open to the public.
Q: Does the product have quality inspection before loading?
A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed. We provide All Original Mill test certificate and support third party inspection.
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation
wooden pallet. It can effectively protect products from corrosion during ocean transportation.
Q: What is your working time?
A: In general, our online service time is Beijing time: 8:00-22:00, after 22:00,
we will reply to your inquiry during the next working day.
