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[China]
Address: Wealth Center,Economic Development Zone,Liaocheng City,Shandong Province,Zip Code 252000,China.
Contact name:Zhang
Shandong Modern International Trade Co., Ltd. |
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UNS S31803 2205 Duplex Stainless Steel Seamless Pipes for ASTM Standard
Product Description
Standard: ASTM A249, ASTM A268, ASTM A269, ASTM A312, etc.
Material: S31803
Item: S31803 2205 Duplex Stainless Steel Seamless Pipe
Specification:
Outer diameter: 1.0-1220mm (1/8”-48”)
Wall thickness: 0.1-150mm (SCH 5S- XXS)
Length: 3m, 5.8m, 6m, 11.8m, or as request.
Surface: Pickled, annealed, polished, bright, sand blast, hair line, etc.
Duplex stainless steel refers to ferrite and austenite each
accounting for about 50%. Generally, the content of less phase also
needs to reach at least 30% of stainless steel. In the case of low
C content, the Cr content is 18% to 28%, and the Ni content is 3%
to 10%. Some steels also contain alloying elements such as Mo, Cu,
Nb, Ti, and N.
This type of steel has the characteristics of both austenite and
ferritic stainless steel. Compared with ferrite, it has higher
plasticity and toughness, no room temperature brittleness,
significantly improved intergranular corrosion resistance and
welding performance, while maintaining iron Element stainless steel
has 475 ° C brittleness, high thermal conductivity, and
superplasticity. Compared with austenitic stainless steel, it has
higher strength and significantly improved resistance to
intergranular corrosion and chloride stress corrosion. Duplex
stainless steel has excellent pitting resistance and is also a
nickel-saving stainless steel.
Chemical Composition for Duplex stainless steel
| Steel Grade | C≤ | Mn≤ | Si≤ | S≤ | P≤ | Cr | Ni | Mo | Cu≤ | N |
S32750((SAF2507) 00Cr22Ni7Mo4N | 0.03 | 1.20 | 0.80 | 0.020 | 0.035 | 24.0/ 26.0 | 6.0/ 8.0 | 3.0/ 5.0 | 0.50 | 0.24/ 0.32 |
| S31803(SAF2205)00Cr22Ni5Mo3N | 0.03 | 2.00 | 1.0 | 0.02 | 0.030 | 21.0/ 23.0 | 4.50/ 6.50 | 2.50/ 3.50 | 0.08/ 0.20 | |
S31500(3RE60) 00Cr18Ni5Mo3Si2 | 0.03 | 1.2/ 2.00 | 1. 4/ 2.00 | 0.030 | 0.030 | 18.0/ 19.0 | 4.25/ 5.25 | 2.50/ 2.00 | 0.05/ 0.10 |
Mechanical Properties for Duplex stainless steel
| Steel Grade | Heat Treatment℃ | Ab(MPa)≥ | As(MPa)≥ | ∮≥ | HB | HRC |
S32750(SAF2507) 00Cr22Ni5Mo3N | 1025-1125 | 800 | 550 | 15 | 310 | 32 |
S31803(SAF2205) 00Cr22Ni5Mo3N | 1020-1100 | 620 | 450 | 25 | 290 | 30.5 |
S31500(3RE60) 00Cr18Ni5Mo3Si2 | 980-1040 | 630 | 440 | 30 | 290 | 30.5 |
Products' Photos
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: How about the delivery terms?
A: 1. Payment: T/T, Western Union, Paypal, 30% deposit in advance and balance before delivery.
2. Min. Order Quantity: 100KG, or as required.
3. Transportation: By express (DHL,TNT,FedEx),air,sea,and train.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products,
Modern always makes a serious inspection for all products and raw materials in strict procedure.
Q: How about your after-sales service?
A: As a professional steel exporter, we offer promote technology support for all problems and questions.
Besides, we accept goods return or replace for quality problem.
