Hot Extrusion

BÖHLER W300 ISOBLOC is a 5% chromium steel and corresponds to material number 1.2343 (X37CrMoV5-1). Produced via the electroslag remelting process (ESR), this tool steel has very high hot toughness as well as good hot hardness and very good resistance against heat-checkings. The combination of these properties makes it a top performer in high- and low-pressure die casting as well as in closed-die and open-die forging. In addition, this material has very good polishability and is therefore also often used as a molding material for plastic injection molds.

BÖHLER W300 ISODISC is a 5% chromium steel and corresponds to material number 1.2343 (X37CrMoV5-1). This common tool steel has good hot toughness as well as a high hot hardness and a high resistance against heat-checkings. The combination of these properties makes it a standard choice in extrusion, forging and low-pressure die casting. This material is also available as W300 ISOBLOC which is a remelted grade with improved cleanliness, homogeneity and toughness.

BÖHLER W302 ISOBLOC is a 5% chromium steel and corresponds to material number 1.2344 (X40CrMoV5-1). Produced via the electroslag remelting process (ESR), this tool steel has very high hot toughness as well as very high hot hardness and a very good resistance against heat-checkings. The combination of these properties makes it a top performer in closed- and open-die forging as well as in high- and low-pressure die casting. In addition, this material has very good polishability and is therefore also often used as a molding material for plastic injection molds.

BÖHLER W302 ISODISC is a 5% chromium steel and corresponds to material number 1.2344 (X40CrMoV5-1). This common tool steel has good hot toughness as well as a high hot hardness and a high resistance against heat-checkings. The combination of these properties makes it a standard choice in extrusion, forging and low-pressure die casting. This material is also available as W302 ISOBLOC which is a remelted grade with improved cleanliness, homogeneity and toughness.

BÖHLER W303 ISODISC is a 5% chromium steel and corresponds to material number 1.2367 (X38CrMoV5-3). This tool steel has good hot toughness as well as a very high hot hardness and resistance against heat-checkings. Compared to an X37CrMoV5-1 (material number 1.2343), the steel has an increased molybdenum content, which significantly increases its thermal resistance and thus makes it the ideal material in die closed-die forging, open-die forging and extrusion.

The BÖHLER W360 AMPO is the powder equivalent of the W360 ISOBLOC. Due to its chemical composition, the material belongs to the product group of hot-work tool steels. After hardening and tempering, it can achieve a hardness of up to 57 HRC with very good toughness properties. Its high temperature wear resistance, heat resistance and toughness characterizes the material. Applications: Printed components with conformal cooling for die casting applications, wear protection layers and repair work in mold making using laser cladding.

BÖHLER W360 ISOBLOC is a material produced by the electroslag remelting process (ESR), which has been specially adapted for use at high tool hardnesses in the range of 51-57 HRC. Although the steel can be classified as a 5% chromium steel, the increased carbon and molybdenum content coupled with state-of-the-art manufacturing technology ensures that BÖHLER W360 ISOBLOC still shows a very good toughness and an exceptionally good thermal resistance, even at high hardness levels. These properties make the steel the perfect choice for smaller components in the die casting sector (e.g., mold inserts, cores, core pins, ejector pins, etc.). The material also is frequently the preferred choice for closed-die and open-die forging tools due to its high wear resistance. Because of this excellent wear resistance and the high toughness, BÖHLER W360 ISOBLOC is also frequently used for cold work applications and as a molding material for plastic injection molds. The Steel also is available as powder material for metal-3D-printing under the brand name BÖHLER W360 AMPO.

BÖHLER W400 VMR is a vacuum remelted material specially developed for tools with complex structures. The steel can be assigned to the 5% chromium steels and has a very high purity due to the special manufacturing technology. Because of its high degree of purity, the excellent homogeneity and the special alloying concept, BÖHLER W400 VMR is one of the hot work tool steels with the highest reachable toughness values. Therefore, this material is a problem solver in many areas when standard grades are no longer sufficient. In addition, Böhler W400 VMR has outstanding polishability. For this reason, the steel is also popular as a molding material for plastic injection molds.

BÖHLER W403 VMR is a vacuum remelted material which was developed as a problem solver for tools for where a standard solution is no longer sufficient. The steel can be assigned to the 5% chromium steels and has a very high purity due to the special manufacturing technology. In addition, the increased molybdenum content leads to improved thermal resistance as well as wear resistance, which makes BÖHLER W403 VMR an all-rounder that is often used for highly stressed dies in the die casting sector. In addition, Böhler W403 VMR has outstanding polishability. For this reason, the steel is also popular as a molding material for plastic injection molds.

BÖHLER W720 VMR is not a classic hot work tool steel, but an ultra-high strength maraging steel. Compared to quenched and tempered steels, the material generates its high strength not through a hardened and tempered martensitic structure with a high carbon content and secondary hardening carbides, but through the precipitation of intermetallic phases from a tough nickel martensitic matrix. BÖHLER W720 VMR corresponds to material number 1.6358 (X2NiCoMoTi18-9-5) and has proven to be ideally suited for many tool steel applications in cold and hot work (e.g., for extrusion stems) up to 450 °C.

Uddeholm Dievar is a premium steel developed for the demanding application of high pressure casting. With new process improvements and development for use in large sizes, Uddeholm Dievar’s quality and toughness is better than ever. It is the industry benchmark for a 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. Uddeholm Dievar is also available for Additive Manufacturing, powder for processing Laser Powder Bed Fusion (LPBF) and Laser Metal Deposition (LMD). Benefits Uddeholm Dievar has superior heat checking and hot properties over AISI H13 and AISI H11 Perfect for large structural dies Standard specification AISI H13 / AFNOR Z35 CDV 5.3

Uddeholm Formvar is a high performance hot work tool steel which offers a very good resistance to hot wear and plastic deformation. It is a solid upgrade choice especially from H13 and H11 forging tools on the market. With good tempering back resistance and hot yield strength, Uddeholm Formvar will ensure increased tool life over H13/H11 dies. This gives a longer tool life and reduced maintenance and tooling costs. Benefits Longer tool life Reduced maintenance Reduced tooling costs Standard specification AISI H13 / AFNOR Z35 CDV 5.3

Uddeholm Impax Supreme is prehardened mold steel with very good polishing and photo etching properties. It is suitable for a wide range of injection molds, blow molds and extrusion dies for plastic. Uddeholm Impax Supreme is supplied at 290-330 HB. In east/south east asian countries served by Assab, Uddeholm Impax Supreme is sold as AS 718 Supreme. Benefits No hardening risks No hardening costs Time saving, e.g. no waiting for heat treatment Lower tool cost (e.g. no distortion to rectify) Modifications easily carried out Can be subsequently nitrided to increase surface wear resistance or locally flame hardened to reduce surface damage. Standard specification W.nr 1.2738 / AISI P20 / AFNOR 35 CND 7

Uddeholm Orvar 2 Microdized is a premium hot work tool steel engineered for demanding applications where high-temperature strength, wear resistance, and dimensional stability are critical. With its exceptional through-hardening properties and uniform microstructure, this steel delivers consistent performance across a wide range of tooling environments. Benefits Designed to meet the rigorous standards of aluminum extrusion tooling and die casting, Uddeholm Orvar 2 Microdized offers outstanding resistance to thermal fatigue, plastic deformation, and premature cracking. Thanks to its high level of machinability and polishability, manufacturers benefit from reduced production time and enhanced surface finishes. The material’s availability in large round dimensions further supports versatility in design and tooling applications. In east/south east asian countries served by Assab, Uddeholm Orvar 2 Microdized is sold as AS 8407 2M. Standard specification W.nr 1.2344 / AISI H13 / AFNOR Z40 CDV 5.1

Uddeholm QRO 90 Supreme is a specially premium hot work steel developed by Uddeholm to provide better performance in high temperature tooling. The name “supreme” implies that by special manufacturing techniques, including electro-slag remelting the steel attains high purity and good mechanical properties. This together with the optimum balance of alloying elements in Uddeholm QRO 90 Supreme gives a property profile which is unique among hot work die steel. Benefits Uddeholm QRO 90 Supreme excels as a tool steels where tools tempers down quickly to lower hardness. Uddeholm QRO 90 Supreme has given improved service life in die casting and extrusion. Standard specification AISI H13 / AFNOR 40 CDV 10 (ESR)

Uddeholm Unimax is a high hardness hot work tool steel which provides great wear resistance even over extended time at elevated temperatures. It performs very well in precision forging and hot stamping. Benefits Improved durability and wear resistance in moulding processes that wear hard on the mould like, long run production, moulding of reinforced plastics and compression moulding Longer tool life and a smoother production run with fewer disturbances for maintenance due to the high ductility The high hardness and toughness together with the good dimension stability makes Unimax suitable as a substrate steel for surface coating when needed The very good hardenability and the unique properties profile of Unimax make it especially suitable for larger moulds. Unimax is therefore supplied in larger dimensions