• zh-hansChinese (Simplified)
  • trTurkish
  • svSwedish
  • skSlovak
  • roRomanian
  • plPolish
  • nlDutch
  • itItalian
  • huHungarian
  • frFrench
  • fiFinnish
  • esSpanish
  • enEnglish
  • deGerman
  • daDanish
  • csCzech
Home Home Home Home
  • Language
    • zh-hansChinese (Simplified)
    • trTurkish
    • svSwedish
    • skSlovak
    • roRomanian
    • plPolish
    • nlDutch
    • itItalian
    • huHungarian
    • frFrench
    • fiFinnish
    • esSpanish
    • enEnglish
    • deGerman
    • daDanish
    • csCzech
  • Search
Search
Technical glossary | Contact | Locations
Menu   ≡ ╳
  • English
    • Magyar (Hungarian)
    • Český (Czech)
    • Dansk (Danish)
    • Nederlands (Dutch)
    • Suomi (Finnish)
    • Français (French)
    • Deutsch (German)
    • Română (Romanian)
    • Slovenčina (Slovak)
    • Español (Spanish)
    • Svenska (Swedish)
    • Türkçe (Turkish)
    • 简体中文 (Chinese (Simplified))
    • Italiano (Italian)
    • Polski (Polish)
  • Home
  • Careers
    • Opportunities (Europe & Asia)
    • Opportunities (North America)
  • Services
    • Heat treatment
      • Case hardening with subsequent hardening operation
        • Atmospheric carburising
        • Low pressure carburising (LPC)
        • Boriding
        • Carbonitriding
      • Case hardening without subsequent hardening operation
        • Corr-I-Dur®
        • Plasma nitriding/Ion nitriding
        • Nitrocarburising
        • Gas nitriding
        • Ferritic nitrocarburising
        • Fluidised bed/salt bath nitriding/nitrocarburising
      • Hardening and tempering
        • Neutral hardening
        • Ausbay quenching
        • Austempering
        • Martempering/Marquenching
        • Press quenching
        • Induction hardening
        • Double hardening
        • Tempering
      • Solution and age
        • Solution and age: Aluminium alloys
        • Solution and age: Nickel alloys
        • Precipitation hardening: Stainless steels
      • Specialty Stainless Steel Processes (S3P)
      • Annealing / Normalising
        • Annealing
        • Recrystallisation
        • Normalising
        • Sub-critical annealing / intercritical annealing
        • Soft annealing
      • Ion implantation
      • Stress relieving
    • Metal joining
      • Furnace/vacuum brazing
      • Induction brazing
      • Electron beam welding
      • HIP diffusion bonding
      • Hydrogen brazing
    • Surface technology
      • Plasma spray
      • High Velocity Oxygen Fuel (HVOF) coating
      • Combustion spraying
      • Vapor phase aluminide (VPA)
      • K-Tech
      • Liquid coatings
      • Anodising
      • Electric arc wire
      • Ceramic coatings
      • Flame spraying
    • Hot isostatic pressing
      • Powdermet® technologies
        • Powdermet® hybrid* with 3D printing
        • Powdermet® 3D printing
        • Powdermet® – Near net shape (NNS)
        • Powdermet® Selective surface net shape (SSNS)
      • Isostatic pressing services
        • Casting densification
        • HIP cladding
        • HIP brazing
        • Simple shape
      • HIP supporting services
        • Simulation and analysis
        • Laboratory services for HIP
  • Markets
    • Automotive
      • Car / Light truck
      • Heavy trucks
      • Motorbikes
      • Motorsports
    • Aerospace & defense
      • Commercial jet
      • Military fighter
      • Helicopter
      • Armoury and munitions
      • Space
    • Energy
      • Stationary turbines
      • Nuclear
      • Oil and gas
      • Renewables
    • General industrial
      • Tooling
      • Agriculture and forestry
      • Construction and civil engineering
      • Mining
      • Rail and marine
      • Consumer products
      • Electronics and telecommunications
      • Medical, health and environmental
      • Food and beverage
      • Chemical and paper
      • Machine building
  • News and media
    • Press releases
    • Downloads
    • Multimedia resources
      • Images
    • Media contact
    • More news
    • History Of Metallurgy
  • Corporate responsibility
    • Our approach
    • Environment
    • Our policies
    • Safety
    • Society
    • Workplace
    • Gender pay gap
  • Investors
    • Our values
    • Our strategy
    • Our performance
    • Our business
      • Key facts
      • What we do
      • Our marketplace
      • Business segments
        • The ADE Divisions
        • The AGI divisions
      • Thermal processing sector overview
    • Governance
      • Governance structure
      • Leadership
      • Internal control and risk management
      • Open door policy
      • Our policies
      • Where we operate
    • Our board
    • Reports and results
    • Financial information
      • Five year summary
      • Group income statement
      • Balance sheet
      • Cash flow
    • Share price and dividend information
      • Detailed share price
      • Dividend history
      • Charting tools
        • Share price chart
        • Shareholder returns
      • Historic calculator and look-up
      • Share price download
    • Regulatory announcements
    • Financial calendar
    • Investor presentations
    • Shareholder information
      • Dividend information
      • Shareholder forms
      • AGM details
      • Electronic proxy voting
      • Share dealing
      • Major shareholders
    • Investor and shareholder contacts
    • Anti-Slavery and Human Trafficking Statement
  • About us
    • Our company
    • Our accreditations
  • Blog

Corr-I-Dur®

Home > Services > Heat treatment > Case hardening without subsequent hardening operation > Corr-I-Dur®
  • Services
    • Heat treatment
      • Case hardening with subsequent hardening operation
        • Atmospheric carburising
        • Low pressure carburising (LPC)
        • Boriding
        • Carbonitriding
      • Case hardening without subsequent hardening operation
        • Corr-I-Dur®
        • Plasma nitriding/Ion nitriding
        • Nitrocarburising
        • Gas nitriding
        • Ferritic nitrocarburising
        • Fluidised bed/salt bath nitriding/nitrocarburising
      • Hardening and tempering
        • Neutral hardening
        • Ausbay quenching
        • Austempering
        • Martempering/Marquenching
        • Press quenching
        • Induction hardening
        • Double hardening
        • Tempering
      • Solution and age
        • Solution and age: Aluminium alloys
        • Solution and age: Nickel alloys
        • Precipitation hardening: Stainless steels
      • Specialty Stainless Steel Processes (S3P)
      • Annealing / Normalising
        • Annealing
        • Recrystallisation
        • Normalising
        • Sub-critical annealing / intercritical annealing
        • Soft annealing
      • Ion implantation
      • Stress relieving
    • Metal joining
      • Furnace/vacuum brazing
      • Induction brazing
      • Electron beam welding
      • HIP diffusion bonding
      • Hydrogen brazing
    • Surface technology
      • Plasma spray
      • High Velocity Oxygen Fuel (HVOF) coating
      • Combustion spraying
      • Vapor phase aluminide (VPA)
      • K-Tech
      • Liquid coatings
      • Anodising
      • Electric arc wire
      • Ceramic coatings
      • Flame spraying
    • Hot isostatic pressing
      • Powdermet® technologies
        • Powdermet® hybrid* with 3D printing
        • Powdermet® 3D printing
        • Powdermet® – Near net shape (NNS)
        • Powdermet® Selective surface net shape (SSNS)
      • Isostatic pressing services
        • Hot isostatic pressing
        • Casting densification
        • HIP cladding
        • HIP brazing
        • Simple shape
      • HIP supporting services
        • Laboratory services for HIP
        • Simulation and analysis

Corr-I-Dur®

Corr-I-Dur® is a proprietary Bodycote thermochemical treatment for simultaneous improvement of corrosion resistance and wear properties through generating an iron nitride-oxide compound layer.

Benefits of Corr-I-Dur®

Corr-I-Dur® is favoured for components that are subjected to a corrosive environment in combination with wear. A very successful alternative to hard chromium, electroless nickel and various galvanic coatings through simultaneous improvement of corrosion and wear behaviour; Corr-I-Dur® layers have a very good bonding to the substrate as they are produced in a diffusion process. In many cases parts can be machined with the final dimensions and customers can skip additional steps such as grinding after the Corr-I-Dur® treatment.

Application & materials

Typical applications include brake pistons, ball joints, pump covers, wiper axis, differential axis, selector shafts, bolts, bushings and fastener elements for automotive applications. Also, hydraulic pistons and housings, several axis and shafts for general industry use. Especially, fill chambers and casting dies in aluminium die casting processes get benefit by the low reactivity between molten metal and the Corr-I-Dur® surface.

Corr-I-Dur® can be applied to nearly all plain and low alloyed ferrous materials as case hardening, heat treatable, cold forming and easy machining steel.

Customers value Corr-I-Dur® for its ability to provide superior material properties such as wear and corrosion resistance, combined with cost-effective attributes such as easy machining and forming.

The hardness of the surface increases with the content of hard nitride forming elements such as Chromium, Al, Mo and V. For heavy applications nitriding steels proved their worth due to the high hardness in the diffusion zone.

Tool steels up to 5% Chromium can normally be treated – for higher content of alloying elements please contact our specialists.

Corr-I-Dur® is not recommended for sintered steel with higher porosity resp. low density.

Corr-I-Dur® process details

Corr-I-Dur® is a combination of various low temperature thermochemical process steps, mainly gaseous nitrocarburising and oxidising. In the process, a boundary layer consisting of three zones is produced. The diffusion layer forms the transition to the substrate and consists of interstitially dissolved nitrogen and nitride precipitations which increase the hardness and the fatigue strength of the component. Towards the surface it is followed by the compound layer, a carbonitride mainly of the hexagonal epsilon phase. The Fe3O4 iron oxide (magnetite) in the outer zone takes the effect of a passive layer comparable to the chromium-oxides on corrosion resistant steels. Due to the less metallic character of oxide and compound layer and the high hardness abrasion, adhesion and seizing wear can be distinctly reduced. Corr-I-Dur® has very little effect on distortion and dimensional changes of components compared to higher temperature case hardening processes.

Related Services
Ferritic nitrocarburising
Gas nitriding

Other

Learn more by viewing our 'Changing Technologies in Automotive' presentation
Contact us for a quote.

Corr-I-Dur®

Corr-I-Dur® is a proprietary Bodycote thermochemical treatment for simultaneous improvement of corrosion resistance and wear properties through generating an iron nitride-oxide compound layer.

Benefits of Corr-I-Dur®

Corr-I-Dur® is favoured for components that are subjected to a corrosive environment in combination with wear. A very successful alternative to hard chromium, electroless nickel and various galvanic coatings through simultaneous improvement of corrosion and wear behaviour; Corr-I-Dur® layers have a very good bonding to the substrate as they are produced in a diffusion process. In many cases parts can be machined with the final dimensions and customers can skip additional steps such as grinding after the Corr-I-Dur® treatment.

Application & materials

Typical applications include brake pistons, ball joints, pump covers, wiper axis, differential axis, selector shafts, bolts, bushings and fastener elements for automotive applications. Also, hydraulic pistons and housings, several axis and shafts for general industry use. Especially, fill chambers and casting dies in aluminium die casting processes get benefit by the low reactivity between molten metal and the Corr-I-Dur® surface.

Corr-I-Dur® can be applied to nearly all plain and low alloyed ferrous materials as case hardening, heat treatable, cold forming and easy machining steel.

Customers value Corr-I-Dur® for its ability to provide superior material properties such as wear and corrosion resistance, combined with cost-effective attributes such as easy machining and forming.

The hardness of the surface increases with the content of hard nitride forming elements such as Chromium, Al, Mo and V. For heavy applications nitriding steels proved their worth due to the high hardness in the diffusion zone.

Tool steels up to 5% Chromium can normally be treated – for higher content of alloying elements please contact our specialists.

Corr-I-Dur® is not recommended for sintered steel with higher porosity resp. low density.

Corr-I-Dur® process details

Corr-I-Dur® is a combination of various low temperature thermochemical process steps, mainly gaseous nitrocarburising and oxidising. In the process, a boundary layer consisting of three zones is produced. The diffusion layer forms the transition to the substrate and consists of interstitially dissolved nitrogen and nitride precipitations which increase the hardness and the fatigue strength of the component. Towards the surface it is followed by the compound layer, a carbonitride mainly of the hexagonal epsilon phase. The Fe3O4 iron oxide (magnetite) in the outer zone takes the effect of a passive layer comparable to the chromium-oxides on corrosion resistant steels. Due to the less metallic character of oxide and compound layer and the high hardness abrasion, adhesion and seizing wear can be distinctly reduced. Corr-I-Dur® has very little effect on distortion and dimensional changes of components compared to higher temperature case hardening processes.

Related Services
Ferritic nitrocarburising
Gas nitriding

Other

Learn more by viewing our 'Changing Technologies in Automotive' presentation
Contact us for a quote.
Legal | Privacy | Accessibility | Site map | Alerts | Company registration | Copyright

© 2022 Bodycote

Technical glossary | Contact | Location
  • English
    ▼
    • Magyar (Hungarian)
    • Český (Czech)
    • Dansk (Danish)
    • Nederlands (Dutch)
    • Suomi (Finnish)
    • Français (French)
    • Deutsch (German)
    • Română (Romanian)
    • Slovenčina (Slovak)
    • Español (Spanish)
    • Svenska (Swedish)
    • Türkçe (Turkish)
    • 简体中文 (Chinese (Simplified))
    • Italiano (Italian)
    • Polski (Polish)
  • Home
  • Careers
    ▼
    • Opportunities (Europe & Asia)
    • Opportunities (North America)
  • Services
    ▼
    • Heat treatment
      ▼
      • Case hardening with subsequent hardening operation
        ▼
        • Atmospheric carburising
        • Low pressure carburising (LPC)
        • Boriding
        • Carbonitriding
      • Case hardening without subsequent hardening operation
        ▼
        • Corr-I-Dur®
        • Plasma nitriding/Ion nitriding
        • Nitrocarburising
        • Gas nitriding
        • Ferritic nitrocarburising
        • Fluidised bed/salt bath nitriding/nitrocarburising
      • Hardening and tempering
        ▼
        • Neutral hardening
        • Ausbay quenching
        • Austempering
        • Martempering/Marquenching
        • Press quenching
        • Induction hardening
        • Double hardening
        • Tempering
      • Solution and age
        ▼
        • Solution and age: Aluminium alloys
        • Solution and age: Nickel alloys
        • Precipitation hardening: Stainless steels
      • Specialty Stainless Steel Processes (S3P)
      • Annealing / Normalising
        ▼
        • Annealing
        • Recrystallisation
        • Normalising
        • Sub-critical annealing / intercritical annealing
        • Soft annealing
      • Ion implantation
      • Stress relieving
    • Metal joining
      ▼
      • Furnace/vacuum brazing
      • Induction brazing
      • Electron beam welding
      • HIP diffusion bonding
      • Hydrogen brazing
    • Surface technology
      ▼
      • Plasma spray
      • High Velocity Oxygen Fuel (HVOF) coating
      • Combustion spraying
      • Vapor phase aluminide (VPA)
      • K-Tech
      • Liquid coatings
      • Anodising
      • Electric arc wire
      • Ceramic coatings
      • Flame spraying
    • Hot isostatic pressing
      ▼
      • Powdermet® technologies
        ▼
        • Powdermet® hybrid* with 3D printing
        • Powdermet® 3D printing
        • Powdermet® – Near net shape (NNS)
        • Powdermet® Selective surface net shape (SSNS)
      • Isostatic pressing services
        ▼
        • Casting densification
        • HIP cladding
        • HIP brazing
        • Simple shape
      • HIP supporting services
        ▼
        • Simulation and analysis
        • Laboratory services for HIP
  • Markets
    ▼
    • Automotive
      ▼
      • Car / Light truck
      • Heavy trucks
      • Motorbikes
      • Motorsports
    • Aerospace & defense
      ▼
      • Commercial jet
      • Military fighter
      • Helicopter
      • Armoury and munitions
      • Space
    • Energy
      ▼
      • Stationary turbines
      • Nuclear
      • Oil and gas
      • Renewables
    • General industrial
      ▼
      • Tooling
      • Agriculture and forestry
      • Construction and civil engineering
      • Mining
      • Rail and marine
      • Consumer products
      • Electronics and telecommunications
      • Medical, health and environmental
      • Food and beverage
      • Chemical and paper
      • Machine building
  • News and media
    ▼
    • Press releases
    • Downloads
    • Multimedia resources
      ▼
      • Images
    • Media contact
    • More news
    • History Of Metallurgy
  • Corporate responsibility
    ▼
    • Our approach
    • Environment
    • Our policies
    • Safety
    • Society
    • Workplace
    • Gender pay gap
  • Investors
    ▼
    • Our values
    • Our strategy
    • Our performance
    • Our business
      ▼
      • Key facts
      • What we do
      • Our marketplace
      • Business segments
        ▼
        • The ADE Divisions
        • The AGI divisions
      • Thermal processing sector overview
    • Governance
      ▼
      • Governance structure
      • Leadership
      • Internal control and risk management
      • Open door policy
      • Our policies
      • Where we operate
    • Our board
    • Reports and results
    • Financial information
      ▼
      • Five year summary
      • Group income statement
      • Balance sheet
      • Cash flow
    • Share price and dividend information
      ▼
      • Detailed share price
      • Dividend history
      • Charting tools
        ▼
        • Share price chart
        • Shareholder returns
      • Historic calculator and look-up
      • Share price download
    • Regulatory announcements
    • Financial calendar
    • Investor presentations
    • Shareholder information
      ▼
      • Dividend information
      • Shareholder forms
      • AGM details
      • Electronic proxy voting
      • Share dealing
      • Major shareholders
    • Investor and shareholder contacts
    • Anti-Slavery and Human Trafficking Statement
  • About us
    ▼
    • Our company
    • Our accreditations
  • Blog
  • Magyar
  • Český
  • Dansk
  • Nederlands
  • Suomi
  • Français
  • Deutsch
  • Română
  • Slovenčina
  • Español
  • Svenska
  • Türkçe
  • 简体中文
  • Italiano
  • Polski