Do you have problems with wear, galling or corrosion on stainless steel?

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1 MARTENSITIC DUPLEX Do you have problems with wear, galling or corrosion on stainless steel? AUSTENITIC FERRITIC

2 A high-temperature solution-nitriding process pushing nitrogen deep into the bulk material. This re-establishes the core hardness of the material, which creates a unique load-bearing capacity and secures corrosion resistance second-to-none. Get all the best things of annealing while maintaining core hardness and increasing corrosion resistance HV* µm* High-T ExpaniteLow-T A low-temperature nitrocarburizing process, by which a double hardened zone containing nitrogen and carbon is established. Nitrogen adds increased surface hardness while carbon bridges the gap to the softer core. A smooth hardness profile is tailored! Controlled surface hardness between HV HV* 5-35µm* Nitrogen Carbon Then the Expanite process is the solution. By combining the and ExpaniteLow-T processes you get a previously unseen surface hardness founded on top of a bulk material, which has very strong loadbearing capacity. Superior corrosion, wear and fatigue properties is the outcome is simply setting new standards for what can be achieved by surface-hardening stainless steel HV* Low-T High-T Superior corrosion, wear, scratch and fatigue properties µm* * Exact values depend on alloy, application and requirements

3 Whatever your stainless steel alloy, there is always an Expanite solution. Whatever your alloy, Expanite can improve your performance. ALLOY PROCESS CASE EXAMPLE PROBLEM EXPANITE PROCESS EXPANITE BENEFIT AUSTENITIC* Back ferrules for assembly of oil and gas pipes. Corrosion and long delivery times with the current surface treatment. Significant improvement of the corrosion resistance due to the Super Expanite process. Significant improvement of the delivery time due to on-site treatment solution at the customer. DUPLEX Ship propeller. The primary reason for wear and breakage of ship propellers is cavitation erosion. Using the process, the propeller life time is increased by a factor of 3, resulting in much fewer repairs and thereby a reduction in the need for back-up ships. FERRITIC ExpaniteLow-T Self-tapping screw. Due to insufficient hardness of the screw body combined with the need to avoid corrosion of the screw head, the customer had chosen a solution where non-stainless steel with sufficient hardness was welded together with a screw head of stainless steel. Because of the surface hardening capabilities of the Expanite process, the customer was able to use a mono-block stainless steel screw. The result was a reduction in cost and time because welding was no longer required. MARTENSITIC* Valve plate and seat for fuel injection pumps. With the increasing requirements for better fuel economy, the demand for increased pressure at which fuel is injected into an engine is rising. This means new requirements for wear resistance. Using the Expanite process, we increased the hardness of a martensitic alloy to a level that allows the use of pressures up to 300bar. * Including precipitation hardenable steels

4 Goes beyond the surface to reduce lead time and costs....and to make you more competitive! This is how we do it: Oxide layer Nitrogen Carbon Day-to-day treatment You can choose to have your material processed in our facilities on a dayto-day basis. Unlike existing solutions the Expanite process is fast, versatile and with no restrictions on the geometrical shape or size of the parts. The flexibility and efficiency of the solution means that we can get your parts back to you in a matter of days. On-site treatment Maximum flexibility and independence Day-to-day processing Not just another coating The Expanite treatment effectively removes the oxide film covering stainless steels. This allows controlled incorporation of carbon and nitrogen atoms in the underlying metal. The hardened layer is characterized by an interstitial hardened zone. We call this zone expanded austenite, expanded martensite, or simply, Expanite. The stainless steel surface is covered with a thin oxide film. The oxide film acts as a barrier for the transfer of carbon and nitrogen atoms to the metal. Streamline it into your own production line You can also opt for a fully automatic solution installed directly in your production line. Contrary to any other surface hardening processes we made it possible to install and run the furnaces in your premises and hereby eliminating the cost, logistics and risks involved in shipping the parts for hardening. Full traceability Expanite Treatment Center Very short lead times Full traceability Sampling and serial production Unlike other technologies, this method does not merely coat the surface. The process goes into and beyond the surface to create a hardness profile with an optimal concentration of carbon and nitrogen. This significantly improves corrosion, galling, fatigue and wear-resistance according to your particular needs. Faster and more efficient The whole process is clean and super-efficient. Contrary to alternatives, including plasma and salt bath based methods; the Expanite process leaves no soot or other residues on the hardened surface, eliminating the need for post cleaning. Gas The gaseous Expanite treatment removes the oxide film and allows an incorporation of carbon and nitrogen atoms in the underlying metal. After the treatment, the oxide film layer is re-established naturally. Hardened zone Nitrogen + Carbon As opposed to pvd or similar coating processes, the Expanite process does not result in a coating, but rather, a hardened surface zone with a higher concentration of carbon and nitrogen. Expanite Treatment Center, Hillerød

5 Expanite goes beyond the surface The philosophy is quite simple; we want to offer the best solutions for surface-hardening of stainless steel! From our state-of-art facility just north of Copenhagen, Denmark with full-size furnaces and laboratory capabilities to the shop-floor of our customers - we are pushing the limits of what performance can be expected. Our patented * and proven technology, scientific know-how and flexible delivery model significantly improves product performance, quality, and reduces costs. With Expanite s surface hardening process for stainless steel, you and your customers will be much more competitive. * Patent number US 8,845,823 B2 Expanite processes......are applicable to the most common stainless steel alloys incl. austenitic, martensitic, ferritic and duplex grades....are gaseous, thus properties can be tailored to match your exact needs....can deliver parts that withstand hours in salt spray, while having a controlled surface hardness of HV....run on a day-to-day basis, resulting in leadtimes significantly lower than alternatives....can either be offered from our treatment centre or implemented on-site, directly in your production line. Industrivænget Hillerød. Denmark info@expanite.com. expanite.com