Gama Outokumpu Core

De acero inoxidable austeníticos y ferríticos para entornos corrosivos

La gama Core contiene productos de acero inoxidable austeníticos y ferríticos para entornos corrosivos de ligeros a medios. El acero inoxidable clásico 18/8 es parte de la gama Outokumpu Core.

Productos principales

Core 304/4301

Core 304/4301 es un acero inoxidable austenítico clásico con un 18% de cromo y 8% de níquel. Es un producto multiusos con buena resistencia a la corrosión y es adecuado para una amplia variedad de aplicaciones que requieren una buena formabilidad y soldabilidad. Core 304/4301 puede suministrarse en toda una variedad de acabados de superficie.

Core 304L/4307

Core 304L/4307 es una alternativa a Core 304/4301 baja en carbono. El bajo contenido de carbono minimiza la precipitación de carburos resultantes del aporte de calor, por ejemplo durante la soldadura, lo que mejora la resistencia frente a la corrosión intergranular. Core 304L/4307 es adecuado para una amplia variedad de aplicaciones que requieren una buena formabilidad y soldabilidad y puede suministrarse con una gran variedad de acabados de superficie. 

Creemos en un mundo que perdure por siempre

Por qué la gama Core

  • Los austeníticos son altamente formables y soldables y son adecuados para cualquier cosa, desde cubiertos hasta depósitos de almacenamiento. Los aceros inoxidables ferríticos tienen buena formabilidad y son muy utilizados por los fabricantes de electrodomésticos.
  • Contiene los multiusos Core 304/4301 y Core 304L/4307, con diferentes alternativas, productos bajos en níquel o sin níquel.
  • El origen de la innovación ferrítica más reciente de Outokumpu: Core 4622

Por qué Outokumpu

  • Outokumpu es un líder mundial en el acero inoxidable y el innovador de los primeros aceros inoxidables del mundo.
  • Muy enfocados en el cliente, la sostenibilidad y la excelencia técnica son el centro de todo lo que hacemos.
  • Como cliente puede beneficiarse de nuestro fuerte apoyo de Investigación y Desarrollo y asistencia técnica.

Por qué acero inoxidable

  • La durabilidad del acero inoxidable implica no solo lo mejor, sino que es la opción más sostenible económicamente en una amplia variedad de aplicaciones.
  • Todos nuestros productos están fabricados con un promedio de 85% de material reciclado y son totalmente reciclables al final de sus ciclos de vida útil.

Outokumpu Core stainless steel grades

Core 304/4301

Description Core 304/4301 is a classic 18% chromium, 8% nickel austenitic stainless steel. It’s an all-purpose product with good corrosion resistance and is suitable for a wide variety of applications that require good formability and weldability. Core 304/4301 can be delivered with a variety of surface finishes.

EN 1.4301

ASTM type 304

ASTM UNS S30400

Microstructure Austenitic

Typical applications

  • Household appliances and consumer goods
  • Kitchen equipment
  • Indoor and outdoor cladding, handrails and window frames
  • Food and beverage industry equipment
  • Storage tanks
  • Flanges and valves

Datasheet Download Core range datasheet for more information on corrosion resistance, mechnanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.04

Cr 18.1

Ni 8.1

Mo -

N -

Others -

Core 304L/4307

Description Core 304L/4307 is a low-carbon alternative to Core 304/4301. The lower carbon content minimizes carbide precipitation as a result of heat input, for example during welding, giving improved resistance against intergranular corrosion. Core 304L/4307 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 1.4307

ASTM type 304L

ASTM UNS S30403

Microstructure Austenitic

Typical applications

  • Food and beverage industry equipment
  • Chemical and pharmaceutical industry equipment (mild to medium corrosive environments)
  • Heat exchangers
  • Storage tanks
  • Tank containers
  • Pipes and tubes
  • Flanges and valves

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition,% by mass

C 0.02

Cr 18.1

Ni 8.1

Mo -

N -

Others -

Core 304LN/4311

Description A low-carbon, higher nickel and nitrogen alloyed alternative to Core 304L/4307 with improved strength and low-temperature toughness. Suitable for applications that require high tensile strength. 

EN 1.4311

ASTM type 304L

ASTM UNS S30453

Microstructure Austenitic

Typical applications

  • Railroad cars
  • Pressure vessels
  • Chemical plant equipment (mild to medium corrosive environments)
  • Flanges and valves

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.02

Cr 18.5

Ni 9.2

Mo -

N 0.14

Others -

Core 304L/4306

Description A higher nickel alternative to Core 304L/4307 with improved formability and deep drawability.

EN 1.4306

ASTM type 304L

ASTM UNS S30403

Microstructure Austenitic

Typical applications

  • Chemical and pharmaceutical plant equipment (mild to medium corrosive environments)
  • Flanges and valves

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.02

Cr 18.2

Ni 10.1

Mo -

N -

Others -

Core 305/4303

Description A high-nickel alternative to Core 304/4301 with reduced strain hardening and excellent cold-forming properties. Ideal for parts that require high degree of deformation. 

EN 1.4303

ASTM type 305

ASTM UNS S30500

Microstructure Austenitic

Typical applications

  • Industrial parts with complex shapes
  • Sinks and other deep-drawn products
  • Complex stamping processes
  • Re-rollers producing very thin-gauge coils

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.04

Cr 17.7

Ni 12.5

Mo -

N -

Others -

Core 321/4541

Description A titanium-stabilized austenitic stainless steel with improved intergranular corrosion resistance for an extended temperature range.

EN 1.4541

ASTM type 321

ASTM UNS S32100

Microstructure Austenitic

Typical applications

  • Anneailing covers
  • Stack liners
  • Automotive exhaust systems
  • Welded pressure vessels
  • Flanges and valves

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composotion, % by mass

C 0.04

Cr 17.3

Ni 9.1

Mo -

N -

Others Ti

Core 347/4550

Description Core 347/4550 is a niobium stabilized alternative to Core 321/4541 with improved intergranular corrosion resistance and good mechanical properties at high temperatures. Core 347/4550 is particularly useful in applications with intermittent heating in the range 400–900 °C/750–1650 °F.

EN 1.4550

ASTM type 347

ASTM UNS S34700

Microstructure Austenitic

Typical applications

  • High temperature gaskets
  • Rocket engine parts
  • Expansion joints
  • Aircraft collector rings
  • Exhaust manifolds
  • Chemical production equipment
  • Flanges and valves

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.05

Cr 17.5

Ni

9.5

Mo -

N -

Others Nb

Core 301LN/4318

Description A low-carbon, nitrogen alloyed alternative to Core 301/4310 with elevated strength, making it particularly suitable for lightweight construction.

EN 1.4318

ASTM type 301LN

ASTM UNS S30153

Microstructure Austenitic

Typical applications

• Automotive applications, especially vehicles chassis
• Railroad cars

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.02

Cr 17.7

Ni 6.5

Mo -

N 0.14

Others -

Core 301/4310

Description A lower chromium and nickel alternative to Core 304/4301 with high work hardening capacity, this is a good choice for applications subjected to high mechanical loading

EN 1.4310

ASTM type 301

ASTM UNS S30100

Microstructure Austenitic

Typical applications

  • Springs
  • Press plates
  • Conveyor chains
  • Mixer blades
  • Sinks

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, by mass %

C 0.10

Cr 17.0

Ni 7.0

Mo -

N -

Others -

Core 201/4372

Description This low-nickel stainless steel has properties approaching Core 301/4310 but with a higher work hardening coefficient. Grade is available from Outokumpu Americas.

EN 1.4372

ASTM type 201

ASTM UNS S20100

Microstructure Austenitic

Typical applications

  • Household appliances
  • Kitchen utensils
  • Sinks
  • Doors and windows
  • Railroad cars

Typical chemical composition, % by mass

C 0.05

Cr 16.1

Ni 3.6

Mo -

N 0.08

Others 7Mn

Core 201LN/4372

Description This low-nickel stainless steel also has properties approaching Core 301/4310, but has a higher strength than Core 201/4372. It hardens more quickly due to its higher work hardening coefficient. Grade is available from Outokumpu Americas.

EN 1.4372

ASTM type 201LN

ASTM UNS S20153

Microstructure Austenitic

Typical applications

  • Railroad freight cars
  • Truck trailers
  • Coal handling
  • Bulk transport equipment

Datasheet Download Outokumpu_Core_datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.03

Cr 16.2

Ni 4.0

Mo -

N 0.20

Others Cu, 6.5Mn

Core 441/4509

Description A nickel-free 17% chromium ferritic stainless steel grade with good corrosion resistance and high-temperature strength was originally designed for exhaust systems. Core 441/4509 is available with single (niobium) or dual (niobium and titanium) stabilization. Due to good formability and weldability it is often a suitable replacement for Core 301/4310. 

EN

1.4509

 

ASTM type -

ASTM UNS S43940

Microstructure Ferritic

Usage

  • Indoor claddings
  • Restaurant equipment and appliances
  • Tubes
  • Heat exchangers

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.02

Cr 17.6

Ni -

Mo -

N

-

 

Others Nb, Ti 

Core 4622

Description A nickel-free, high-chromium (21Cr) ferritic stainless steel with equal corrosion resistance to Core 304/4301. Core 4622 has excellent deep drawability and is almost ridging free, meaning it is easier to polish and has a lower overall production cost.

EN 1.4622

ASTM type -

ASTM UNS S44330

Microstructure Ferritic

Typical applications

  • Household, catering and architectural applications (indoor and outdoor)
  • Tubular products for automotive and process industries
  • Building facades
  • Tanks and process equipment

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.02

Cr 21.0

Ni -

Mo -

N -

Others Nb,Ti,Cu

Core 434/4113

Description A molybdenum-alloyed ferritic stainless steel that offers improved corrosion resistance. This grade is available from Outokumpu Americas.

EN 1.4113

ASTM type 434

ASTM UNS S43400

Microstructure Ferritic

Typical applications

  • Automotive trim and fittings

Datasheet Download Core range datasheet for more information on corrosion resistance, mechanical properties, physical properties and fabrication.

Typical chemical composition, % by mass

C 0.04

Cr 16.5

Ni -

Mo 1.0

N -

Others -

Standards and approvals for Core 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 10095
Heat resisting steels and nickel alloys
EN 10151
Stainless steel strip for springs
EN 10217-7
Welded steel tubes for pressure purposes – Stainless steel tubes
EN 10296-2
Welded circular steel tubes for mechanical and general engineering purposes – Stainless Steel tubes
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 A182/ ASME SA-182
Stainless steel and heat resisting steel bars and shapes
ASTM A 240
Cr and Cr-Ni stainless steel plate, sheet and strip for pressure vessels
ASTM A276
Stainless steel and heat-resisting steel rod and wire for cold heading and forging
ASTM A479/ ASME SA-479
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
Eurocode 3 / EN 1993-1-4
Design of steel structures – Part 1-4: General rules – Supplementary rules for stainless steels

The most commonly used international product standards are given here. For a list of standards by product, see steelfinder.outokumpu.com

Outokumpu meets the most common certifications and approvals, including:

  • AD 2000 Merkblatt
  • Approval of Material Manufacturers
  • Factory Production Control Certificate
  • ISO 9001
  • ISO 14001
  • ISO 50001
  • ISO/TS 16949
  • NORSOK
  • OHSAS 18001
  • Pressure Equipment Directive (PED)

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