BAOSTEEL 2507 Duplex Stainless Steel Plate 2.0 - 14.0mm Custom
|Products||Super Duplex 2507 Stainless Steel Plate|
|Thickness||2.0mm 2.5mm 3.0mm 4.0mm 5.0mm 6.0mm 8.0mm 10.0mm 12.0mm 14.0mm|
|Standard Size||1500 x 6000mm|
|Service||Laser Cutting / water cutting / fire cutting / bending.etc|
|Other Grade||254SMO 317L 253MA 2205 904L 316Ti.etc|
Duplex stainless steels are called “duplex” because they have a
two-phase microstructure consisting of grains of ferritic and
austenitic stainless steel. The picture shows the yellow austenitic
phase as “islands” surrounded by the blue ferritic phase. When
duplex stainless steel is melted it solidifies from the liquid
phase to a completely ferritic structure. As the material cools to
room temperature, about half of the ferritic grains transform to
austenitic grains (“islands”). The result is a microstructure of
roughly 50% austenite and 50% ferrite.
Feather of duplex stainless steel
- Strength: Duplex stainless steels are about twice as strong as
regular austenitic or ferritic stainless steels.
- Toughness and ductility: Duplex stainless steels have significantly
better toughness and ductility than ferritic grades; however, they
do not reach the excellent values of austenitic grades.
- Corrosion resistance: As with all stainless steels, corrosion
resistance depends mostly on the composition of the stainless
steel. For chloride pitting and crevice corrosion resistance, their
chromium, molybdenum and nitrogen content are most important.
Duplex stainless steel grades have a range of corrosion resistance,
similar to the range for austenitic stainless steels, i.e from Type
304 or 316 (e.g. LDX 2101©) to 6% molybdenum (e.g. SAF 2507©)
- Stress corrosion cracking resistance: Duplex stainless steels show
very good stress corrosion cracking (SCC) resistance, a property
they have “inherited” from the ferritic side. SCC can be a problem
under certain circumstances (chlorides, humidity, elevated
temperature) for standard austenitics such as Types 304 and 316.
Size of our UNS S32750 Plate in STOCK
About 2507 duplex stainless steel
Alloy 2507 (UNS S32750) is a super duplex stainless steel with 25%
chromium, 4% molybdenum, and 7% nickel designed for demanding
applications which require exceptional strength and corrosion
resistance, such as chemical process, petrochemical, and seawater
equipment. The steel has excellent resistance to chloride stress
corrosion cracking, high thermal conductivity, and a low
coefficient of thermal expansion. The high chromium, molybdenum,
and nitrogen levels provide excellent resistance to pitting,
crevice, and general corrosion.
- Oil and gas industry equipment
- Offshore platforms, heat exchangers, process and service water
systems, fire-fighting systems, injection and ballast water systems
- Chemical process industries, heat exchangers, vessels, and piping
- Desalination plants, high pressure RO-plant and seawater piping
- Mechanical and structural components, high strength,
- Power industry FGD systems, utility and industrial scrubber
systems, absorber towers, ducting, and piping
Chemical Analysis of 2507 duplex stainless steel
|PREN = [Cr%] = 3.3 [Mo%] = 16 [N %] ≥ 40|
Mechanical and Physical Properties of 2507 duplex stainless steel
2507 combines high tensile and impact strength with a low
coefficient of thermal expansion and high thermal conductivity.
These properties are suitable for many structural and mechanical
components. The low, ambient, and elevated temperature mechanical
properties of 2507 sheet and plate are shown below. All of the test
data shown are for samples in the annealed and quenched condition.
2507 is not recommended for applications which require long
exposures to temperatures in excess of 570°F because of the
increased risk of a reduction in toughness. The data listed here
are typical for wrought products and should not be regarded as a
maximum or minimum value unless specifically stated.
Mechanical Properties of 2507 duplex stainless steel
|0.2% Offset Yield Strength, ksi||80 min.|
|Ultimate Tensile Strength, ksi||116 min.|
|1% Offset Yield Strength, ksi||91 min.|
|Elongation in 2 inches, %||15 min.|
|Hardness, Rockwell C||32 max|
|Impact Energy, ft-lbs||74 min.|