- Cargo tanks in chemical tankers
- Pulp and paper industry applications such as digesters and process tanks
- Oil and gas industry applications such as flanges, tubes, and pipes
- Structural components in bridges
- Flanges and valves
Outokumpu Forta grades
Forta DX 2205
The most popular duplex product on the market. Offers very good resistance to uniform and localized corrosion and stress corrosion cracking in combination with high mechanical strength.
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- EN: 1.4462
- ASTM type: -
- ASTM UNS: S32205
- Microstructure: Duplex
- C: 0.02
- Cr: 22.4
- Ni: 5.7
- Mo: 3.1
- N: 0.17
- Others: -
Forta LDX 2101
A lean-alloyed duplex product with good resistance to localized and uniform corrosion, as well as stress corrosion cracking, making it a good substitute for coated carbon steel in e.g. structural components and storage tanks. Also offers high mechanical strength and good machinability.
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- EN: 1.4162
- ASTM type: -
- ASTM UNS: S32101
- Microstructure: Duplex
- Storage tanks
- Household heaters
- Structural components for floodgates and bridges, or rebar for concrete structures
- Pulp and paper industry applications such as digesters and components for paper machines
- Flanges and valves
- C: 0.03
- Cr: 21.5
- Ni: 1.5
- Mo: 0.3
- N: 0.22
- Others : 5 Mn Cu
Forta DX 2304
A duplex product with a leaner alloying composition than Forta DX 2205. It has good resistance to localized and uniform corrosion, as well as stress corrosion cracking, combined with high mechanical strength.
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- EN: 1.4362
- ASTM type: -
- ASTM UNS: S32304
- Microstructure: Duplex
- Pulp and paper industry applications
- Blast walls on oil platforms
- Flanges and valves
- C: 0.02
- Cr: 23.0
- Ni: 4.8
- Mo: 0.3
- N: 0.10
- Others: Cu
Forta EDX 2304
An enhanced version of Forta DX 2304 with better corrosion resistance and higher mechanical strength.
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- EN: 1.4362
- ASTM type: -
- ASTM UNS: S32304
- Microstructure: Duplex
- Offshore topside structural components
- Tank applications
- Flanges and valves
- C: 0.02
- Cr: 23.8
- Ni: 4.3
- Mo: 0.5
- N: 0.18
- Others: Cu
Forta LDX 2404
A low-nickel, high-nitrogen duplex product with higher mechanical strength than Forta DX 2205. Offers very good resistance to localized and uniform corrosion, as well as stress corrosion cracking.
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- EN: 1.4662
- ASTM type: -
- ASTM UNS: S82441
- Microstructure: Duplex
- Storage tanks
- Structural components for flood and sluice gates
- Mining industry applications such as dewatering equipment
- Flanges and valves
- C: 0.02
- Cr: 24.0
- Ni: 3.6
- Mo: 1.6
- N: 0.27
- Others: 3Mn Cu
Forta SDX 100
A super duplex product with higher corrosion resistance and mechanical strength than Forta DX 2205. Often used in extremely corrosive environments such as desalination, chemical, or offshore subsea applications.
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- EN: 1.4501
- ASTM type: -
- ASTM UNS: S32760
- Microstructure: Duplex
- Desalination plants
- Industrial piping
- Scrubbers
- Tubular products for oil and gas applications
- Deep-sea pipelines
- Flanges and valves
- C: 0.02
- Cr: 25.4
- Ni: 6.9
- Mo: 3.8
- N: 0.27
- Others: W Cu
Forta SDX 2507
A super duplex product with higher corrosion resistance and mechanical strength than Forta DX 2205. Often used in extremely corrosive environments such as desalination, chemical, or offshore subsea applications.
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- EN: 1.4410
- ASTM type: -
- ASTM UNS: S32750
- Microstructure: Duplex
- Desalination plants
- Industrial piping
- Scrubbers
- Tubular products for oil and gas applications
- Deep-sea pipelines
- Flanges and valves
- C: 0.02
- Cr: 25
- Ni: 7.0
- Mo: 4.0
- N: 0.27
- Others: -
Forta H400
Forta H400 has higher strength than standard 304/4301 and a lower nickel content, making it a cost-effective and lightweight austenitic product for the automotive industry. It has been used in automotive applications for over 10 years.
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- EN: 1.4376
- ASTM type: -
- ASTM UNS: -
- Microstructure: Austenitic
- Cross members
- Strut domes
- Bumpers
- C: 0.04
- Cr: 17.5
- Ni: 4.0
- Mo: -
- N: 0.20
- Others: 6.8Mn
Forta 430/4016
A classic 16% chromium ferritic stainless steel used in mildly corrosive environments.
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- EN: 1.4016
- ASTM type: 430
- ASTM UNS: S43000
- Microstructure: Ferritic
- Automotive components
- Structural applications
- Tanks
- C: 0.05
- Cr: 16.2
- Ni: -
- Mo: -
- N: -
- Others: -
Forta 301LN/4318
A low-carbon, nitrogen alloyed alternative to Forta 301/4310.
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- EN: 1.4318
- ASTM type: 301LN
- ASTM UNS: S30153
- Microstructure : Austenitic
- Vehicle chassis
- Profiles
- C: 0.02
- Cr: 17.7
- Ni: 6.5
- Mo: -
- N: 0.14
- Others: -
Forta 301/4310
A lower chromium and nickel alternative to Forta 304/4301 with high work hardening capacity.
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- EN: 1.4310
- ASTM type: 301
- ASTM UNS: S30100
- Microstructure: Austenitic
- Automotive components
- Cable connectors
- Springs
- Window frames
- Commercial appliances
- C: 0.10
- Cr: 17.0
- Ni: 7.0
- Mo: -
- N: -
- Others: -
Forta 304/4301
Forta 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.
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- EN: 1.4301
- ASTM type: 304
- ASTM UNS: S30400
- Microstructure: Austenitic
- Beer kegs
- Cutlery
- Automotive components
- Tanks and vessels
- Furniture
- Structural applications
- C: 0.04
- Cr: 18.1
- Ni: 8.1
- Mo: -
- N: -
- Others: -
Forta 304L/4307
Forta 304L/4307 is a low-carbon alternative to Forta 304/4301 and is suitable for a wide variety of applications.
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- EN: 1.4307
- ASTM type: 304L
- ASTM UNS: S30403
- Microstructure: Austenitic
- Beer kegs
- Cutlery
- Automotive components
- Tanks and vessels
- Furniture
- Structural applications
- C: 0.02
- Cr: 18.1
- Ni: 8.1
- Mo: -
- N: -
- Others: -
Forta 316/4401
A normal-carbon alternative to Forta 316L/4404 that is widely used for various applications.
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- EN: 1.4401
- ASTM type: 316
- ASTM UNS: S31600
- Microstructure: Austenitic
- Automotive components
- Tanks and vessels
- C: 0.04
- Cr: 17.2
- Ni: 10.1
- Mo: 2.1
- N: -
- Others: -
Forta 316L/4404
A normal-carbon alternative to Forta 316L/4404 that is widely used for various applications.
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- EN: 1.4404
- ASTM type: 316L
- ASTM UNS: S31603
- Microstructure : Austenitic
- Automotive components
- Tanks and vessels
- C: 0.02
- Cr: 17.2
- Ni: 10.1
- Mo: 2.1
- N: -
- Others: -
Forta 316plus
Forta 316plus is a cost-efficient, 21Cr lower-nickel/molybdenum alternative to traditional molybdenum austenitics like Forta 316L/4404.
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- EN: 1.4420
- ASTM type: -
- ASTM UNS: S31655
- Microstructure: Austenitic
- Automotive components
- Tanks and vessels
- C: 0.02
- Cr: 20.3
- Ni: 8.6
- Mo: 0.7
- N: 0.19
- Others : -
Forta 316Ti/4571
A titanium-stabilized, molybdenum-alloyed austenitic alternative to Forta 316L/4404 – mainly used in Germany.
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- EN: 1.4571
- ASTM type: 316Ti
- ASTM UNS: S32100
- Microstructure: Austenitic
- Heating technology
- Profiles
- C: 0.04
- Cr: 16.8
- Ni: 10.9
- Mo: 2.1
- N: -
- Others: Ti
Circle Green Forta LDX 2101
A lean-alloyed duplex product with good resistance to localized and uniform corrosion, as well as stress corrosion cracking, making it a good substitute for coated carbon steel in e.g. structural components and storage tanks. Also offers high mechanical strength and good machinability.
Please remove item from comparison before you can add another one
- EN: 1.4162
- ASTM type: -
- ASTM UNS: S32101
- Microstructure: Duplex
- Storage tanks
- Household heaters
- Structural components for floodgates and bridges, or rebar for concrete structures
- Pulp and paper industry applications such as digesters and components for paper machines
- Flanges and valves
- C: 0.03
- Cr: 21.5
- Ni: 1.5
- Mo: 0.3
- N: 0.22
- Others : 5 Mn Cu
DUplex and other High strength Stainless Steels
Forta
The Forta range contains duplex, H-Series and temper rolled austenitic and ferritic stainless steels that enable thinner structures and weight reduction (measured in Rp0.2 > 350 MPa. PRE 16 - 43).
Duplex (austenitic-ferritic) stainless steel combines many of the best properties of austenitic and ferritic stainless steels: high strength, good corrosion resistance and enhanced resistance to stress- corrosion cracking (Rp0.2 > 400 MPa. PRE 26 - 43).
Forta DX 2205 (EN 1.4462) is the most well-known duplex product, offering very good resistance to uniform and localized corrosion and stress- corrosion cracking in combination with high mechanical strength. Super duplex Forta SDX 2507 (EN 1.4410), with higher corrosion resistance and mechanical strength than Forta DX 2205, is often used in extremely corrosive environments such as desalination, chemical or offshore subsea applications.
H-series are manganese containing fully austenitic stainless steels with high strength and high ductility (Rp0.2 > 400 MPa. PRE 21). Forta H400 (EN 1.4376) with lower nickel content has higher strength than standard austenitic stainless steels 304/304L and is a cost-effective solution for automotive lightweight applications.
Forta H500 (EN 1.4678) has a fully austenitic and non-magnetizable microstructure with significant strain-hardening due to twinning. With a yield strength higher than 500 MPa, it is a perfect lightweight alternative for safety- relevant components in the automotive and transportation industry.
Temper-rolled stainless steels have high strength and high hardness (Rp0.2 > 350 MPa. PRE 16 - 25). Temper rolling means a controlled additional cold rolling process that is applied to standard austenitic and ferritic stainless steels and it increases the strength and surface hardness of the steels. The strength classification includes yield strength classes from CP350 up to CP1100 MPa and tensile strength classes from C700 up to C1900 MPa.
Temper-rolled austenitic stainless steel Forta 301/4310 (EN 1.4310) can reach the highest strength class. Forta H800 (EN 1.4678) and Forta H1000 (EN 1.4678) are the temper-rolled condition of Forta H500 and still non-magnetic. They offer higher resistance for crash-relevant parts and a cost-effective and price-stable solution in the automotive industry.
Standards and approvals
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 |
Forta DX 2304, Forta DX 2205, and Forta SDX 2507 are listed in EN 10028-7:2007.
European material approval EAM 0045-01:2012/01 for Forta LDX 2101 is available for cold rolled 0.5-6.4 mm and hot rolled 3.0–10.0 mm.
In ASME II-D 2013, Forta DX 2205 (S31803 and S32205). Forta EDX 2304 (S32304), Forta SDX 100 (S32760) and Forta SDX 2507 (S32750) are listed for general use in the temperature range -30 – 316 °C. Data for Forta LDX 2101 and Forta LDX 2404 can be found in ASME code case 2418-1 and 2780 respectively.
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
- Pressure Equipment Directive (PED)