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Name: | Duplex & Suplex Dupex Stainless Steel Buttweld Pipe Fittings |
Specificaiton: | ASTM A815 |
Size:: | 1/2" to 120" |
SCH: | SCH10 through SCHXXS |
Steel Grade:: | UNS S31803, S32205, S32750, S32760 |
MOQ:: | 100 KGS |
Ends: | PE OR BE |
Delivery term: | FOB, CNF, CIF and EXW |
Payment Term: | TT or LC At sight |
Loading Port: | XINGANG |
Deliver mode: | By Sea, By Air and By Land |
Packing: | Standard seaworthy/airworthy packing |
Standard: | ANSI, JIS, BS, EN, DIN |
Duplex stainless steel is a very useful metal that has been used worldwide. It gets its name because it contains two different grades of metals.
In essence, Duplex is a Fe-Ni-Cr alloy with a two-phase ferritic-austenitic stainless steel structure at room temperature.
Duplex steel is characterized by high chromium content (19-28%) and molybdenum (maximum 5%), and the nickel content is lower than that of austenitic stainless steel. The most commonly used duplex stainless steels are 2205 (22% chromium, 5% nickel) and 2507 (25% chromium, 7% nickel). 2507 is called "super duplex steel" because of its higher corrosion resistance.
The advantage of combining ferrite and austenite grades is that the resulting metal has a metallurgical structure composed of two phases and therefore benefits from the characteristics of both microstructures.
These characteristics make duplex steel highly sought after in heavy industries such as oil and gas nuclear and chemical processing.
Duplex stainless steel has many advantages, such as:
The wide range of advantages of duplex stainless steel means that it can be used in many different fields. They are used for:
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
S31803 |
0.03 |
2 |
1 |
0.03 |
0.02 |
min: 21.0 |
min: 2.5 |
min: 4.5 |
min: 0.08 |
max |
max |
max |
max |
max |
max: 23.0 |
max: 3.5 |
max: 6.5 |
max: 0.20 |
|
S32205 |
0.03 |
2 |
1 |
0.03 |
0.02 |
min: 22.0 |
min: 3.0 |
min: 4.5 |
min: 0.14 |
max |
max |
max |
max |
max |
max: 23.0 |
max: 3.5 |
max: 6.5 |
max: 0.20 |
Grade |
Tensile Strength |
Yield Strength |
Elongation % |
Hardness (HB) MAX |
ksi (min) |
0.2% ksi (min) |
|||
S31803/S32205 |
90 |
65 |
25 |
217 |
Trade Name |
DUPLEX |
DUPLEX |
2205 DUPLEX |
SUPER DUPLEX FERRALIUM 225 |
SUPER DUPLEX 2507 |
SUPER DUPLEX ZERON 100 |
UNS # |
S31200 |
S31803 |
S32205 |
S32550 |
S32750 |
S32760 |
Buttweld Fittings |
----- |
A/SA815 |
A/SA815 |
A/SA815 |
A/SA815 |
A/SA815 |