Materials
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- Duplex 2205
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Duplex 2205
date:2019/3/11 16:50:52
Inventory Spotlight: Duplex 2205
|
Type |
Seamless & Welded Pipe |
Butt Weld Fittings |
Flanges & Pressure Fittings |
|
Sizes |
1/4" thru 16" |
1/2" thru 12" |
All descriptions |
|
Schedules |
Sch 10, 40, 80, 160 & XXH |
Sch 10, 40, 80, 160, & XXH |
|
ASTM Standards
|
Bar |
Butt Weld Fittings |
Forgings |
Pipe, Welded & Seamless |
Tube, Welded |
Plate |
|
A276, A479 |
A815 |
A182 |
A790 |
A789 |
A240 |
Minimum Physical Properties
|
Tensile Strength |
Yield Strength |
|
90 KSI Min. |
65 KSI Min. |
Chemical Composition (wt%)
| C |
Mn |
P |
S |
Si |
Ni |
Cr |
Fe |
Mo |
N |
|
0.03 Max |
2.00 Max |
0.03 Max. |
0.02 Max. |
1.00 Max. |
4.50 - 6.50 |
21.0 - 23.0 |
Balance |
2.50 - 3.50 |
0.14 - 0.20 |
Properties
Duplex 2205 is a dual-phase stainless steel whose grain structure is about 45% ferritic and 55% austenitic, hence the name "duplex". With twice the mechanical strength and corrosion resistance of common austenitics, 2205 offers some advantages over 316L and 317L:
* Lower coefficient of thermal expansion and a higher thermal conductivity
* Resists chloride stress corrosion cracking
* Pitting and crevice corrosion resistance
* Excellent choice for high chloride environments
* Lower cost than high alloyed austenitics
Applications
Industries taking advantage of the lower cost and higher mechanical properties of 2205 include:
* Heat exchangers
* Marine construction
* Oil and gas industry
* Chemical processing
