Plastics

Stringent requirements are placed on the materials used to make these moulds due to the harsh environment and industrial stress to which plastic mould steel is subjected. The importance of selecting the correct steel grade for your plastic moulding cannot be overemphasised.

Beginning with the innovative Stainless Concept system comprising metallurgically balanced stainless grades, ASSAB delivers a unique combination of corrosion resistance, wear resistance and high strength. Stavax ESR for example has set the industry standard; it is the original corrosion resistant steel and the classic choice in environments where corrosion is unacceptable and the demands on hygiene are particularly high. Such precise mechanical properties make steel grades from the Stainless Concept perfect not only in traditional tooling applications, but also for manufacturing components with high demands.

The Stainless Concept consists of Stavax ESR, Mirrax ESR, Mirrax 40, Corrax, Royalloy and Elmax SuperClean.
Regardless the specification and application - injection moulding, blow moulding, extrusion, compression moulding or transfer moulding, you will find a suitable grade within our comprehensive product programme.

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CALMAX	Calmax has high toughness, good wear resistance and good polishability. It is a suitable tool for plastic mould applications. Same chemical composition as Carmo but delivered in soft annealed condition.
VIKING	Viking is a versatile, high alloyed tool steel characterized by the excellent combination of toughness and wear resistance required for chipper-knives and heavy duty blanking and forming.
CALDIE	Caldie is a medium alloyed tool steel suitable for short and medium run tooling in applications where a combination of very high chipping resistance and compressive strength is required. The property profile makes Caldie a robust cold work tool steel for heavy duty blanking and forming of AHSS (Advanced High Strength Steel).
ASSAB 88	ASSAB 88 is a high alloyed tool steel with a very broad property profile. It is also a very good steel for all types of surface treatments. This combination means that ASSAB 88 is an extremely versatile conventional tool steel for medium run cold work tooling. In markets served by Uddeholm, ASSAB 88 is promoted as Sleipner.
ASSAB PM 23 SUPERCLEAN	ASSAB PM 23 SuperClean is powder high speed steel with excellent wear resistance and toughness. ASSAB PM 23 SuperClean is perfect for high volume cold work applications like blanking of harder materials, e.g. carbon steel or cold rolled strip steel. It is also suitable for forming thinner work materials. In markets served by Uddeholm, ASSAB PM 23 SuperClean is promoted as Vanadis 23 SuperClean.
ASSAB PM 30 SUPERCLEAN	ASSAB PM 30 SuperClean is powder high speed steel meant for cutting tools and other cold work applications. It has excellent wear resistance and toughness. The PM process gives a good machinability and grindability as well as a good dimension stability during heat treatment. In markets served by Uddeholm, ASSAB PM 30 SuperClean is promoted as Vanadis 30 SuperClean.
ASSAB PM 60 SUPERCLEAN	ASSAB PM 60 SuperClean is powder high speed steel suitable for cutting tools and other cold work applications. This is a premium steel with extreme wear resistance and high hot hardness. In markets served by Uddeholm, ASSAB PM 60 SuperClean is promoted as Vanadis 60 SuperClean.
VANADIS 4 EXTRA SUPERCLEAN	Vanadis 4 Extra SuperClean is powder tool steel for long run tooling. This is the most versatile PM tool steel on the market today, combining high wear resistance with very good ductility and resistance to chipping of edges. Excellent machinability in both soft and hard condition ensures advantages in both tool making and tool maintenance, where high demands on adhesive wear and chipping resistance are required.
ELMAX SUPERCLEAN	Elmax SuperClean is a powder 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.
ASSAB 618 HH	ASSAB 618 HH is a pre-hardened plastic mould steel with good machinability and polishability. ASSAB 618 HH is DIN standard 1.2738 material.
ASSAB 618 T	ASSAB 618 T is a pre-hardened plastic mould steel suitable for medium and large tools that require good surface appearance. ASSAB 618 T is a modified grade of DIN standard 1.2738 material.
ASSAB 718 HH	ASSAB 718 HH is a pre-hardened plastic mould steel with very good polishability. ASSAB 718 HH is DIN standard 1.2738 material. In markets served by Uddeholm, ASSAB 718 HH is promoted as Impax HH.
NIMAX	Nimax is a low carbon steel with excellent toughness, machinability and weldability. Nimax also has good polishing and etching properties. This grade provides a minimum risk for unexpected failures due to the high pre-hardened hardness in combination with high toughness.
MIRRAX 40	Mirrax 40 is a pre-hardened corrosion resistant mould steel with very good toughness, good machinability and excellent polishing properties. Mirrax 40 is an electroslag remelted (ESR) steel supplied at hardness level approx 40 HRC.
VIDAR 1 ESR	Vidar 1 ESR is a product suitable for both hot work and plastic mould applications, especially large plastic moulds that require good toughness in combination with high surface finish obtained by polishing or texturing. Vidar 1 ESR is an electroslag remelted (ESR) steel which provides reduction of inclusions in the material.
UNIMAX	Unimax is a high hardness electroslag remelted tool steel which provides great wear resistance even over extended time at elevated temperatures. This product is suitable for coating and nitriding. Unimax performs very well in precision forging, hot stamping and moulding of reinforced plastics.
CORRAX	Corrax is a precipitation hardening steel with superior corrosion resistance and easy to heat treat. Corrax provides good dimensional stability. This product is used both as mould material and engineering material.
STAVAX ESR	Stavax ESR is the most renowned of the ASSAB plastic mould steels. As the core product in the Stainless Concept series it is characterised as a through hardening corrosion resistant mould steel with excellent polishability. Stavax ESR is electro slag remelted in order to further reduce the number of inclusions in the steel.
MIRRAX ESR	Mirrax ESR is a through hardening corrosion resistant steel with very good polishability. ASSAB recommends Mirrax ESR to be used for applications demanding medium to large cross sections. It has a unique combination of toughness, corrosion resistance and through-hardening properties.
POLMAX	Polmax is a through hardening corrosion resistant mould steel with a superior polishability, good corrosion resistance and machinability. Widely used for moulds for lenses, compact discs, memory discs and medical applications. By using Polmax you can achieve an excellent surface finish.
ROYALLOY	RoyAlloy is a patented free machining stainless holder steel, which is supplied in prehardened condition. RoyAlloy is designed specifically for plastic moulding applications aiming at providing reduced mould maintenance costs, worry free weld repair, dimensional stability and lower mould production costs.
ASSAB MM 40	ASSAB MM 40 is beryllium copper mould alloy supplied at approx 40 HRC. Copper-alloys are suitable mould materials where a combination of high thermal conductivity, corrosion resistance and polishablity is needed.
ASSAB 8407 SUPREME	ASSAB 8407 Supreme is our trusted premium H13 steel for all kinds of hot work tool applications. Proven over and over again ASSAB 8407 Supreme has stood the test of time and remains well known in the tooling industry for its high and reliable performance and ease of maching. In markets served by Uddeholm, ASSAB 8407 Supreme is promoted as Orvar Supreme.
DIEVAR	Dievar is ASSAB’s premium steel developed for the demanding application of High pressure die casting. It is the industry benchmark for as the high performance steel for the longest tool life and lowest crack risks due to its superior toughness and ductility. Apart from die casting it has proven itself as a great tool steel for other applications such as forging, extrusion and hot stamping.