Plastic Mold Steels - Hardenable Corrosion Resistant Steels

BÖHLER M310 ISOPLAST is a corrosion-resistant, martensitic chromium steel which, through electroslag remelting and optimization of the chemical composition, has a good homogeneity and a balanced hardness-toughness-corrosion resistance ratio.

BÖHLER M333 ISOPLAST is a corrosion-resistant, martensitic plastic mold steel with excellent polishability and toughness for products with highest surface requirements. BÖHLER M333 ISOPLAST is also approved for food and beverage contact.

BÖHLER M340 ISOPLAST corresponds to a corrosion-resistant, martensitic chromium steel with improved wear resistance. This is ideal for the application area of glass fiber reinforced plastics. In addition, the BÖHLER M340 ISOPLAST is approved for food and beverage contact.

BÖHLER M368 MICROCLEAN is a corrosion-resistant, martensitic chromium steel produced by powder metallurgy. Due to the alloy concept and the production route, the steel has a high wear resistance, high corrosion resistance and high toughness. In addition, BÖHLER M368 MICROCLEAN is approved for food and beverage contact.

BÖHLER M390 MICROCLEAN is a corrosion-resistant, martensitic chromium steel produced by powder metallurgy. Due to its alloy design, this steel has very high wear resistance and good corrosion resistance. In addition, BÖHLER M390 MICROCLEAN is approved for food and beverage contact.

BÖHLER M398 MICROCLEAN is a corrosion-resistant, martensitic chromium steel produced by powder metallurgy. Due to its alloy design, this steel has good corrosion resistance and higher wear resistance compared to BÖHLER M390 MICROCLEAN.

BÖHLER N685 is a corrosion-resistant, martensitic chromium steel with a high carbon content and molybdenum and vanadium additives.

BÖHLER N690 is a corrosion-resistant, martensitic chromium steel with a high carbon content and the addition of cobalt, molybdenum and vanadium. BÖHLER N690 is also approved for food and beverage contact.

BÖHLER N695 is a corrosion-resistant, martensitic chromium steel with a high carbon content and added molybdenum.

Uddeholm Compax Supreme has been developed as a mold quality steel, based on the widely used AISI S7 grade. The steel is extremely clean and has a homogeneous microstructure. These features are achieved through strict processing control and maximum sulfur content of 0.005%. This quality level is verified by ultrasonic testing to high requirements. Uddeholm Compax Supreme is also suitable for a wide range of heavy duty blanking, shearing and forming tools, due to its excellent combination of toughness and wear resistance. Benefits machines consistently consistent hardness predictable in heat treatment can be polished to extremely high surface finishes greater performance security increased tool life

Uddeholm Corrax is a precipitation hardening steel with a unique set of properties that makes it perfect for many demanding applications. The superior resistance against corrosion combined with a hardness up to 50 HRC and a simple heat treatment makes Uddeholm Corrax the obvious choice for long run series of aggressive plastics such as PVC. The chemical composition makes Uddeholm Corrax easy to process by Additive Manufacturing. Hence, it is also available as powder for Laser Powder Bed Fusion (LPBF) and Laser Metal Deposition (LMD). Benefits Very good corrosion resistance Flexible hardness of 34-50 HRC achieved by ageing No hard “white layer” after EDM

Uddeholm Elmax Super Clean is a powder metallurgically produced mould steel characterized by a combination of very good wear resistance, corrosion resistance and dimensional stability. Recommended for long production runs of smaller and complicated shapes and/or reinforced plastics. High wear resistance is normally connected to low corrosion resistance and vice versa. In Uddeholm Elmax SuperClean it has however been able to achieve this unique combination of properties by a powder-metallurgy-based production. Uddeholm Elmax SuperClean offers a possibility to make long-life, low maintenance moulds for the best overall moulding economy. Benefits Less wear because of god wear resistance Less indentations because of compressive strength Less maintenance because of corrosion resistance Less adjustments after heat treatment because of good dimensional stability Standard specification AFNOR Z170 CVD 17.3

Uddeholm Mirrax ESR is a through hardening corrosion resistant steel with very good polishability. Mainly intended for medium to large cross sections. It has a unique combination of toughness, corrosion resistance and through-hardening properties. Benefits Low mold maintenance costs: The surface of cavity impressions retain their original finish over extended running periods Molds stored or operated in humid conditions require less protection Low production costs: Water cooling channels are less affected by corrosion Heat transfer characteristics, and therefore cooling efficiency, are constant throughout the mold life, ensuring consistent cycle times Safe mold use because of good toughness also in big dimensions

Uddeholm Stavax ESR is a premium stainless mold steel for small and medium inserts and cores. Uddeholm Stavax ESR combines corrosion and wear resistance with excellent polishability, good machinability and stability in hardening. Mold maintenance requirement is reduced by assuring that core and cavity surfaces retain their original finish over extended operating periods. When compared with non stainless mold steel, Uddeholm Stavax ESR offers lower production costs by maintaining rust free cooling channels, assuring consistent cooling and cycle time. This classic stainless tool steel is the right choice when rust in production is unacceptable and where requirements for good hygiene are high, as within the medical industry, optical industry and for other high quality transparent parts. Uddeholm Stavax ESR is a part of the Uddeholm Stainless Concept. Benefits Low mold maintenance because of corrosion resistance: Surfaces retain their original finish Less production during storing and operation in humid condition Lower production costs: Since water-cooling channels are unaffected by corrosion Heat transfer characteristics, therefore cooling efficiency is constant throughout the mold life, ensuring consistent cycle times Long life mold Standard specification W.nr 1.2083 / AISI 420 / AFNOR Z40 CV 14 (RSL)

Uddeholm Tyrax ESR combines best in class toughness, corrosion and wear resistance. This grade was developed for molding of high performance plastics often filled with glass fiber reinforcements and additives like flame retardants. This matrix- based microstructure is designed to achieve a high-gloss surface by only a few polishing steps, dramatically reducing the tool lead time and enabling production of top quality plastic parts. Uddeholm Tyrax ESR can achieve a high hardness (up to 58 HRC) and is a suitable upgrade from AISI 420 ESR, AISI S7 and AISI 440C. Benefits good dimensional stability at heat treatment and in service even microstructure and small grain size good hardenability Uddeholm Tyrax is also available for Additive Manufacturing, powder for processing Laser Powder Bed Fusion (LPBF) and Laser Metal Deposition (LMD).

Uddeholm Vanax SuperClean is the long-awaited response to the market’s need for steel that is both strong and stainless. Combining the corrosion resistance of austenitic stainless steel such as AISI 316L, with a hardness of 60 HRC and the wear resistance of a cold work tool steel, opens up new opportunities. Where no previous materials suffice, this powder metallurgical steel grade offers resistance in the most corrosive environments possible. From start to finish, its unique material properties provide reliable performance in the most extreme conditions and for the most demanding working materials. Benefits Uddeholm Vanax SuperClean has an excellent corrosion resistance both in low and high temperature tempered condition in combination with good wear resistance to counteract mixed wear/galling/fretting. Applications are e.g. found in plastic molding, food processing and engineering designs.