Heat treatable stainless steels
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The Dura range contains 14 martensitic and precipitation hardening stainless steel products designed for applications that demand a high level of surface hardness.
In addition to improved hardenability, these products are characterized by high strength and wear resistance attributes. For this reason, the main alternatives to the Dura range products are carbon steels rather than other ranges of stainless steel.
Dura range products are sold as solution annealed and then age hardened for use in applications that require hardness and a higher corrosion resistance than carbon steel can offer. These products are applicable to everything from high quality knives and scalpels all the way to aircraft landing gear. The precipitation hardening products are hardened by a special mechanism involving the formation of precipitates within the microstructure. Both martensitic and precipitation hardening stainless steels are magnetic.
Our Dura range is especially suitable for end products, which require heat treatment. In the case that you’re needs are geared towards high-strength stainless steels with no heat treatment requirements, our Forta range’s temper rolled products are suitable for those needs.
All Dura range products are readily available around the globe and are delivered from mills that are well known for their on-time delivery accuracy.
You can depend on Outokumpu stainless steels to reliably and consistently meet the specifications that your application demands. Our experts can also create products that are custom-made to your precise specifications.
A very popular martensitic stainless steel that is corrosion resistant in water and steam.
EN 1.4021
ASTM type 420
ASTM UNS S42000
Microstructure Martensitic
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.20
Cr 13.0
Ni -
Mo -
N -
Others -
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A high-hardness martensitic stainless steel that is corrosion resistant in water and steam.
EN 1.4034
ASTM type 420
ASTM UNS S42000
Microstructure Martensitic
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.45
Cr 13.7
Ni -
Mo -
N -
Others -
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A martensitic stainless steel that is corrosion resistant in water and steam. Grade is only available as press plate.
EN 1.4006
ASTM type 410
ASTM UNS S41000
Microstructure Martensitic
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.12
Cr 12.0
Ni -
Mo -
N -
Others -
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A martensitic stainless steel with slightly better hardenability than Dura 410/4006 that is corrosion resistant in water and steam.
EN 1.4024
ASTM type -
ASTM UNS -
Microstructure Martensitic
Typical applications
Datasheet
Typical chemical composition, % by mass
C 0.16
Cr 13.2
Ni -
Mo -
N -
Others -
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Similar to Dura 420/4021 but with improved corrosion resistance and hightemperature strength.
EN 1.4024
ASTM type -
ASTM UNS -
Microstructure Martensitic
Typical applications
Datasheet
Typical chemical composition, % by mass
C 0.16
Cr 13.2
Ni -
Mo -
N -
Others -
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A martensitic stainless steel that is corrosion resistant in water and steam.
EN 1.4028
ASTM type 420
ASTM UNS S42000
Microstructure Martensitic
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.30
Cr 12.5
Ni -
Mo -
N -
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Similar to Dura 420/4028, but with improved corrosion resistance and high-temperature strength.
EN 1.4419
ASTM type -
ASTM UNS -
Microstructure Martensitic
Typical applications
Datasheet
Typical chemical composition, % by mass
C 0.38
Cr 13.3
Ni -
Mo 0.9
N -
Others -
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A martensitic stainless steel with medium-high hardness that is corrosion resistant in water and steam.
EN 1.4031
ASTM type 420
ASTM UNS S42000
Microstructure Martensitic
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.38
Cr 13.5
Ni -
Mo -
N -
Others -
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Outokumpu’s most corrosion-resistant martensitic stainless steel. Good resistance in moderately corrosive, low-chloride environments and very good mechanical properties and wear resistance. Medium-high hardness.
EN 1.4122
ASTM type -
ASTM UNS -
Microstructure Martensitic
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.41
Cr 16.1
Ni -
Mo 1.0
N -
Others -
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A high-hardness martensitic stainless steel with improved corrosion and wear resistance compared to Dura 420/4034.
EN 1.4410
ASTM type -
ASTM UNS -
Microstructure Martensitic
Typical applications
Datasheet
Typical chemical composition, % by mass
C 0.50
Cr 14.8
Ni -
Mo 0.8
N -
Others -
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Similar to Dura 4110 but with elevated wear resistance.
EN 1.4116
ASTM type -
ASTM UNS -
Microstructure Martensitic
Typical applications
Datasheet
Typical chemical composition, % by mass
C 0.50
Cr 14.4
Ni -
Mo 0.6
N -
Others -
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A martensitic precipitation hardening steel with high strength and hardness, good corrosion resistance, and satisfactory formability (depending on heat treatment/condition).
EN 1.4542
ASTM type 630
ASTM UNS S17400
Microstructure Precipitation hardening
Typical applications
Datasheet
Typical chemical composition, % by mass
C 0.02
Cr 15.5
Ni 4.8
Mo -
N -
Others Nb, Cu
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A precipitation hardening stainless steel with high strength and hardness, good corrosion resistance, and satisfactory formability (depending on heat treatment/condition).
EN 1.4568
ASTM 631
UNS S17700
Microstructure Precipitation hardening
Typical applications
Product forms
Datasheet
Typical chemical composition, % by mass
C 0.08
Cr 17.0
Ni 7.0
Mo -
N -
Others Al
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A precipitation hardening stainless steel with high strength and hardness, good corrosion resistance, and satisfactory formability (depending on heat treatment/condition).
EN 1.4574
ASTM type 632
ASTM UNS S15700
Microstructure
Precipitation hardening
Typical applications
Product forms
Datasheet
Chemical composition
C 0.08
Cr 14.5
Ni 7.5
Mo 2.2
N -
Others 1Al
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Dura range stainless steels meet the following standards:
ASME SA240M Code Sect. II. Part A
ASTM A240/A240M
ASTM A240M
EN 10088-2
EN 10088-3
EN 10088-4
EN 10088-5
Outokumpu meets the most common certifications and approvals, including:
