Supra

Stainless steel for highly corrosive environments

Browse Supra range specifications. Visit Stainless Steel Finder

The Supra range contains stainless steel products designed for highly corrosive environments. Our Supra range stainless steels have a good resistance to uniform corrosion in many organic and inorganic chemicals.

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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.

EN 1.4401

ASTM type 316

ASTM UNS S31600

Microstructure Austenitic

Typical applications

  • Heat exchangers
  • Flanges and valves

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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

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