- 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
Outokumpu Core grades
Core 304/4301
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4301
- ASTM type: 304
- ASTM UNS: S30400
- Microstructure: Austenitic
- C: 0.04
- Cr: 18.1
- Ni: 8.1
- Mo: -
- N: -
- Others: -
Core 304L/4307
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4307
- ASTM type: 304L
- ASTM UNS: S30403
- Microstructure: Austenitic
- 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
- C: 0.02
- Cr: 18.1
- Ni: 8.1
- Mo: -
- N: -
- Others: -
Core 304LN/4311
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4311
- ASTM type: 304L
- ASTM UNS: S30453
- Microstructure: Austenitic
- Railroad cars
- Pressure vessels
- Chemical plant equipment (mild to medium corrosive environments)
- Flanges and valves
- C: 0.02
- Cr: 18.5
- Ni: 9.2
- Mo: -
- N: 0.14
- Others: -
Core 304L/4306
A higher nickel alternative to Core 304L/4307 with improved formability and deep drawability.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4306
- ASTM type: 304L
- ASTM UNS: S30403
- Microstructure: Austenitic
- Chemical and pharmaceutical plant equipment (mild to medium corrosive environments)
- Flanges and valves
- C: 0.02
- Cr: 18.2
- Ni: 10.1
- Mo: -
- N: -
- Others: -
Core 305/4303
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4303
- ASTM type: 305
- ASTM UNS: S30500
- Microstructure: Austenitic
- Industrial parts with complex shapes
- Sinks and other deep-drawn products
- Complex stamping processes
- Re-rollers producing very thin-gauge coils
- C: 0.04
- Cr: 17.7
- Ni: 12.5
- Mo: -
- N: -
- Others: -
Core 321/4541
A titanium-stabilized austenitic stainless steel with improved intergranular corrosion resistance for an extended temperature range.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4541
- ASTM type: 321
- ASTM UNS: S32100
- Microstructure: Austenitic
- Anneailing covers
- Stack liners
- Automotive exhaust systems
- Welded pressure vessels
- Flanges and valves
- C: 0.04
- Cr: 17.3
- Ni: 9.1
- Mo: -
- N: -
- Others : Ti
Core 347/4550
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4550
- ASTM type: 347
- ASTM UNS: S34700
- Microstructure: Austenitic
- High temperature gaskets
- Rocket engine parts
- Expansion joints
- Aircraft collector rings
- Exhaust manifolds
- Chemical production equipment
- Flanges and valves
- C: 0.05
- Cr: 17.5
- Ni: 9.5
- Mo: -
- N: -
- Others: Nb
Core 301LN/4318
A low-carbon, nitrogen alloyed alternative to Core 301/4310 with elevated strength, making it particularly suitable for lightweight construction.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4318
- ASTM type: 301LN
- ASTM UNS: S30153
- Microstructure: Austenitic
• Automotive applications, especially vehicles chassis
• Railroad cars
- C: 0.02
- Cr: 17.7
- Ni: 6.5
- Mo: -
- N: 0.14
- Others : -
Core 301/4310
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
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4310
- ASTM type: 301
- ASTM UNS: S30100
- Microstructure: Austenitic
- Springs
- Press plates
- Conveyor chains
- Mixer blades
- Sinks
- C: 0.10
- Cr: 17.0
- Ni: 7.0
- Mo: -
- N: -
- Others : -
Core 201/4372
This low-nickel stainless steel has properties approaching Core 301/4310 but with a higher work hardening coefficient. Grade is available from Outokumpu Americas.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4372
- ASTM type: 201
- ASTM UNS: S20100
- Microstructure: Austenitic
- Household appliances
- Kitchen utensils
- Sinks
- Doors and windows
- Railroad cars
- C: 0.05
- Cr: 16.1
- Ni: 3.6
- Mo: -
- N: 0.08
- Others: 7Mn
Core 201LN/4372
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4372
- ASTM type: 201LN
- ASTM UNS: S20153
- Microstructure: Austenitic
- Railroad freight cars
- Truck trailers
- Coal handling
- Bulk transport equipment
- C: 0.03
- Cr: 16.2
- Ni: 4.0
- Mo: -
- N: 0.20
- Others: Cu, 6.5Mn
Core 441/4509
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4509
- ASTM type: -
- ASTM UNS: S43940
- Microstructure: Ferritic
- Indoor claddings
- Restaurant equipment and appliances
- Tubes
- Heat exchangers
- C: 0.02
- Cr: 17.6
- Ni: -
- Mo: -
- N:
-
- Others: Nb, Ti
Core 4622
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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4622
- ASTM type: -
- ASTM UNS: S44330
- Microstructure: Ferritic
- Household, catering and architectural applications (indoor and outdoor)
- Tubular products for automotive and process industries
- Building facades
- Tanks and process equipment
- C: 0.02
- Cr: 21.0
- Ni: -
- Mo: -
- N: -
- Others: Nb,Ti,Cu
Core 434/4113
A molybdenum-alloyed ferritic stainless steel that offers improved corrosion resistance. This grade is available from Outokumpu Americas.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4113
- ASTM type: 434
- ASTM UNS: S43400
- Microstructure: Ferritic
- Automotive trim and fittings
- C: 0.04
- Cr: 16.5
- Ni: -
- Mo: 1.0
- N: -
- Others: -
Circle Green Core 304/4301
Circle Green 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. Circle Green Core 304/4301 can be delivered with a variety of surface finishes.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4301
- ASTM type: 304
- ASTM UNS: S30400
- Microstructure: Austenitic
- 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
- C: 0.04
- Cr: 18.1
- Ni: 8.1
- Mo: -
- N: -
- Others: -
Circle Green Core 304L/4307
Circle Green 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. Circle Green 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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4307
- ASTM type: 304L
- ASTM UNS: S30403
- Microstructure: Austenitic
- 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
- C: 0.02
- Cr: 18.1
- Ni: 8.1
- Mo: -
- N: -
- Others: -
Circle Green Core 441/4509
A nickel-free 17% chromium ferritic stainless steel grade with good corrosion resistance and high-temperature strength was originally designed for exhaust systems. Circle Green 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.
Per aggiungere un altro elemento, devi prima escludere questo dal confronto
- EN: 1.4509
- ASTM type: -
- ASTM UNS: S43940
- Microstructure: Ferritic
- Indoor claddings
- Restaurant equipment and appliances
- Tubes
- Heat exchangers
- C: 0.02
- Cr: 17.6
- Ni: -
- Mo: -
- N:
-
- Others: Nb, Ti
Core
La gamma Core include gradi di acciai inossidabili austenitici e ferritici per ambienti da moderatamente a mediamente corrosivi con un valore PRE compreso tra 17 – e 22.Il grado di acciaio inossidabile austenitico più utilizzato, Core 304L/4307 (EN 1.4307), definisce il panorama complessivo della gamma Core. Tale gamma è completata dai moderni acciai inossidabili ferritici stabilizzati al 18 – 21% di cromo privi di nichel, come Core 441/4509 (EN 1.4509), e alternative austenitiche a basso tenore di nichel.
L'ultima novità della gamma Core è l'acciaio inossidabile ferritico stabilizzato al 21% di cromo, Core 4622 (EN 1.4622). Il Core 4622 senza nichel offre resistenza alla corrosione e saldabilità simili e miglior trasferimento di calore, lavorabilità e trafilabilità profonda rispetto al 304L.
Gli acciai inossidabili austenitici Cr-Ni della gamma Core hanno buone capacità di resistenza alla corrosione, saldatura e formatura, e in particolare presentano caratteristiche di formatura per stiramento. Gli acciai austenitici vantano una duttilità molto elevata anche a temperature criogeniche. A causa della maggiore durezza e dell'incrudimento naturali degli acciai inossidabili austenitici, può essere necessaria un'attenzione particolare durante le operazioni di formatura e lavorazione rispetto agli acciai inossidabili ferritici o al carbonio.
I moderni acciai inossidabili ferritici stabilizzati della gamma Core possiedono buone proprietà di saldatura e imbutitura e resistenza alla corrosione. Grazie alla struttura frazionata, gli acciai inossidabili ferritici privi di nichel hanno un'eccellente resistenza alla tensocorrosione indotta da cloruri. I ferritici hanno buone proprietà di trasferimento del calore che possono essere sfruttate in applicazioni in cui si predilige un trasferimento di calore uniforme e rapido. Un buon trasferimento di calore con una minore espansione termica facilita la saldabilità grazie alla minore distorsione della saldatura e al comportamento meno instabile rispetto agli austenitici. Inoltre, i ferritici hanno una lavorabilità simile a quella degli acciai al carbonio, a causa della bassa tendenza all'incrudimento.
I gradi della gamma Core possono essere utilizzati in un ampio ventaglio di applicazioni, con il supporto di una vasta selezione di finiture superficiali fornito da stabilimenti e Centri servizi.
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 steel |
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)