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[China]
Trade Verify
Address: China Factory : Suzhou Industrial Park, JiangSu Province,China
Contact name:amy
BEST PIPELINE EQUIPMENT CO.,LTD |
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Production Name : Seamless Duplex Stainless Steel Pipe
Standard : ASTM A790 Material : S31803 NACE MR0175
Duplex UNS S31803 is the most common duplex grade in the market. It
has very good resistance to localized corrosion and stress
corrosion cracking in combination with high mechanical strength. It
is widely used in oil & gas, hydro power, pressure vessels,
pulp & paper, structural components and chemical tankers. The
alloy is not intended to be used at temperatures above 300°C due to
embrittlement.
| WEIGHT% | C | SI | MN | S | P | CR | NI | MO | N |
| MIN. | 21,00 | 4,50 | 2,50 | 0,10 | |||||
| MAX. | 0,030 | 1,00 | 2,00 | 0,015 | 0,030 | 23,00 | 6,50 | 3,50 | 0,22 |
The main applications are for details with special requirements for
high corrosion resistance.
S31803 is characterized by:
• High resistance to stress corrosion cracking in halide containing
environments.
• High resistance to pitting and crevice corrosion.
• High resistance to general corrosion.
• High mechanical strength.
• High resistance to erosion corrosion and corrosion fatigue.
| YIELD STRENGTH RP0.2 MPA | TENSILE STRENGTH RM MPA | ELONGATION [%] | HARDNESS [HB] | IMPACT, CHARPY-V, -46ºC [J] | PRE | |
| BAR | ≥ 450 | 650 – 880 | ≥ 25 | ≤ 270 | ≥ 45 | ≥ 33 |
| PLATE, CR | ≥ 500 | 700 – 950 | ≥ 20 | ≥ 45 | ≥ 33 | |
| PLATE, HR | ≥ 460 | 640 – 840 | ≥ 25 | ≥ 45 | ≥ 33 |
Solution annealing at 1020 – 1100°C followed by water quenching.
Very good.
| UNS | TYPE | AMS | ASTM | FEDERAL | CHARACTERISTICS |
|---|---|---|---|---|---|
| S31803/S32205 | Duplex | – – | A-276 A-479 | – | Roughly double the strength of standard austenitic stainless steels, designed to improve resistance in many applications such as chloride environments and sulfide stress corrosion. |
| C | MN | P | S | SI | CR | NI | MO | CU | OTHER | M/NM |
|---|---|---|---|---|---|---|---|---|---|---|
| .03 | 2. | .03 | .02 | 1. | 21. – 23. | 4.5 – 6.5 | 2.5 – 3.5 | N .08 – .2 | INQUIRE |
Seamless Duplex Stainless Steel Pipe Pictures
