The Supra range contains stainless steel products designed for highly corrosive environments. Outokumpu Supra range stainless steels have a good resistance to uniform corrosion in many organic and inorganic chemicals. The addition of molybdenum enhances the alloy’s corrosion resistance in many acidic environments.
Outokumpu Supra range
Stainless steels for highly corrosive environments
Key grades
Supra 316/4401
Supra 316/4401 is a widely used Molybdenum alloyed austenitic stainless steel. It’s an all-purpose product with very good corrosion resistance and is suitable for a wide variety of applications that require good formability and weldability. Supra 316/4401 can be delivered with a variety of surface finishes.
Supra 316L/4404
Supra 316L/4404 is a low-carbon alternative to Supra 316/4401. The lower carbon content minimizes carbide precipitation as a result of heat input, for example during welding, giving improved resistance against intergranular corrosion.Supra 316L/4404 is suitable for a wide variety of applications that require good formability and weldability, and can be delivered with a variety of surface finishes.
Outokumpu Supra range
Watch the video about the Outokumpu stainless steels for highly corrosive environments
We believe in the world that lasts forever
Why Supra range
Why Outokumpu
• Outokumpu is a global leader in stainless steel, and innovator of the first stainless steels in the world.• A strong customer focus, sustainability, and technical excellence are at the heart of everything we do.
• As a customer you benefit from our strong R&D and technical support
Why stainless steel
• The durability of stainless steel means that it is not only the best, but also the most economically sustainable choice for a wide range of applications.• All of our products are made from an average of 85% recycled material and are fully recyclable at the end of their lifecycles.
Outokumpu Supra stainless steel grades
Supra 316/4401
Description Supra 316/4401 is a widely used Molybdenum alloyed austenitic stainless steel. It’s an all-purpose product with very good corrosion resistance and is suitable for a wide variety of applications that require good formability and weldability. Supra 316/4401 can be delivered with a variety of surface finishes.
EN 1.4401
ASTM type 316
ASTM UNS S31600
Microstructure Austenitic
Typical applications
- Heat exchangers
- Flanges and valves
Product forms
Datasheet Outokumpu Supra range datasheet for more information on corrosion resistance, mechnanical properties, physical properties and fabrication.
Chemical composition
C 0.04
Cr 17.2
Ni 10.1
Mo 2.1
N -
Others -
Supra 316L/4404
Description Supra 316L/4404 is a low-carbon alternative to Supra 316/4401. The lower carbon content minimizes carbide precipitation as a result of heat input, for example during welding, giving improved resistance against intergranular corrosion.Supra 316L/4404 is suitable for a wide variety of applications that require good formability and weldability, and can be delivered with a variety of surface finishes.
EN 1.4404
ASTM type 316L
ASTM UNS S31603
Microstructure Austenitic
Typical applications
- Chemical industry
- Petrochemical industry
- Pulp and paper industry
- Textile industry
- Food and beverage industry
- Pharmaceutical industry
- Medical applications
- Flanges and valves
Product forms
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.02
Cr 17.2
Ni 10.1
Mo 2.1
N -
Others -
Supra 316plus
Description The highest strength stainless steel in the Supra range. Supra 316plus is a cost-efficient, 21Cr lower-nickel/molybdenum alternative to traditional molybdenum austenitics like Supra 316L. This product has good formability, excellent weldability, and is usable in cryogenic applications.
EN 1.4420
ASTM type -
ASTM UNS S31655
Microstructure Austenitic
Typical applications
- Process and transport tanks
- Water treatment and pipes
- Heat exchangers
- Architectural applications
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.02
Cr 20.3
Ni 8.6
Mo 0.7
N 0.19
Others -
Supra 316L/SANS4402
Description A high-strength, high-formability product often used in container transports and where there is an elevated temperature requirement.
SANS 1.4402
ASTM type -
ASTM UNS -
Microstructure Austenitic
Typical applications • Container tanks
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.02
Cr 17.2
Ni 10.1
Mo 2.1
N -
Others -
Supra 316/4436
Description A product with high resistance to non-oxidizing acids and chloride-containing media due to higher molybdenum content. Supra 316/4436 has good formability and weldability.
EN 1.4436
ASTM type 316
ASTM UNS S31600
Microstructure Austenitic
Typical applications
- Pulp and paper industry equipment
- Pharmaceutical industry equipment
- Flanges and valves
Product forms
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.04
Cr 16.9
Ni 10.7
Mo 2.6
N -
Others -
Supra 316/4432
Description Supra 316L/4432 is a low-carbon alternative to Supra 316/4436. The lower carbon content minimizes carbide precipitation as a result of heat input, for example during welding, giving improved resistance against intergranular corrosion.
EN 1.4432
ASTM type 316L
ASTM UNS S31603
Microstructure Austenitic
Typical applications
- Drinking water systems
- Cooling systems
- Wastewater systems
- Flanges and valves
Product forms
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.02
Cr 16.9
Ni 10.7
Mo 2.6
N -
Others -
Supra 316L/4435
Description A Supra 316L/4435 alternative with higher chromium and nickel content for enhanced corrosion resistance and formability.
EN 1.4435
ASTM type 316L
ASTM UNS S31603
Microstructure Austenitic
Typical applications
- Urea plants
- Pulp and synthetic fiber plants
- Flanges and valves
Product forms
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C
0.02
Cr 17.3
Ni 12.6
Mo 2.6
N -
Others -
Supra 316Ti/4571
Description A titanium-stabilized alternative to Supra 316L/4404 – mainly used in Germany for elevated temperature applications. Due to its titanium-stabilization this product is weldable in all thickness ranges.
EN 1.4571
ASTM type 316Ti
ASTM UNS S31635
Microstructure Austenitic
Usage
- Flue gas applications
- Flanges and valves
Product forms
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.04
Cr 16.8
Ni 10.9
Mo 2.1
N -
Others Ti
Supra 444/4521
Description A nickel-free molybdenum-alloyed ferritic stainless steel with very good corrosion resistance, good cold formability and high strength. Supra 444/4521 allows for thinner walls in tanks and is not prone to stress corrosion cracking.
EN 1.4521
ASTM type 444
ASTM UNS S444000
Microstructure Ferritic
Typical applications
- Hot water tanks
- Drinking water pipes
Product forms
Datasheet Download Supra range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.
Chemical composition
C 0.02
Cr 18.0
Ni -
Mo 20
N -
Others Nb,Ti
Standards and approvals for Supra range
| EN ISO 18286 | Hot-rolled stainless steel plates – Tolerances on dimensions and shape |
| EN 10051 | Hot-rolled steel strip. |
| EN 10088-1 | Stainless steels – list of stainless steels |
| ISO 15510 | Stainless steels – chemical composition |
| EN ISO 9445 | Cold-rolled stainless narrow strip, wide strip, plate/sheet and cut lengths. |
| ASTM A 480 | General requirements for flat-rolled stainless and heat resisting steel |
| ASTM A 959 | Harmonized standard grade compositions for wrought stainless steels |
| ASME IID | Materials – Physical properties tables |
| EN 10028-7 | Flat products for pressure purposes – Stainless steels |
| EN 10088-2 | Stainless steels – sheet/plate and strip for general purposes |
| EN 10088-3 | Stainless steels – semi-finished products, bars, rods sections for general purposes |
| EN 10088-4 | Technical delivery conditions for sheet/plate and strip |
| EN 10088-5 | Technical delivery conditions for bars, rods wire, sections and bright products of corrosion resisting steels for construction purposes |
| EN 10095 | Heat resisting steels and nickel alloys |
| EN 10151 | Stainless steel strip for springs |
| EN 10302 | Creep resisting steels, nickel and cobalt alloys |
| ASTM A 167 | Stainless and heat-resisting Cr-Ni steel plate, sheet, and strip |
| ASTM A 176 | Stainless and heat-resisting Cr steel plate, sheet, and strip |
| ASTM A 240 | Cr and Cr-Ni stainless steel plate, sheet and strip for pressure vessels |
| ASTM A276 | Stainless steel and heat resisting steel bars and shapes |
| ASTM A479/479M | Stainless steel bars for boilers/pressure vessels |
| ASTM A493 | Stainless steel and heat-resisting steel rod and wire for cold heading and forging |
| ASTM A555 | General requirements for stainless and heat resistant steel wire and wire rod |
| ASTM A 666 | Austenitic stainless steel sheet, strip, plate, bar for structural and architectural applications |
| ASME IIA | Materials. Part A – Ferrous Material Specifications |
Outokumpu meets the most common certifications and approvals around the world, including:
- AD 2000 Merkblatt
- Approval of Material Manufacturers
- Factory Production Control Certificate
- ISO 9001
- ISO 14001
- ISO 50001
- ISO/TS 16949
- NORSOK
- OHSAS 18001
