Hot Work

Generally the term Hot Work Steel includes tool steels which adopt a constant temperature about 200°C during application.  Consequently, hot work applications involve the usual stresses which tool steels are subjected to, plus thermal stresses due to the contact between tools and hot materials during forming.

Bohler Steel

Heat leaves us cold.

Only very special steels are suited to hot work applications. The particular properties of BÖHLER hot work tool steels are specifically trimmed to their use at high temperatures. The cleanliness of the steel is a deciding factor for a long tool life and for resistance to heat checking. Typical applications for hot work tool steels are: pressure die casting, hot extrusion, open die forging, plastic processing and other hot applications.

If you are unable to find the material you require please check Uddeholm Grades.

 

Title Type/Filesize Download

W302

EN No (W-Nr) 1.2344, AISI H13
Hot Work Tool Steel featuring excellent hot tensile strength, good hot wear resistance, high toughness and heat checking resistance.

Size Range:
Rd 13mm-710mm
Fl 200x40mm - 380x110mm
Sht 1500x800x25 - 75mm

Other size available on request.

PDF Download
PDF / 340 KB

W300

EN No (W-Nr) ~1.2343, AISI H11 
Hot work steel offering high impact strength, excellent hot tensile properties, and outstanding air hardenability.

Size Range:
H.B 523x190

Other sizes and profiles available on request

PDF Download
PDF / 308 KB

W302 Isoblock

EN No (W-Nr) 1.2344, AISI H13 
E.S.R treated Hot Work Tool Steel featuring excellent hot tensile strength, good hot wear resistance, high toughness and heat checking resistance.

Size Range:
Rd 225mm-710mm
Fl 70x20mm - 1000x410mm

Other size available on request

PDF Download
PDF / 340 KB

W360

W360 Isoblock has been developed to meet the requirements of the market and has the combined advantages of the high hardness of a high speed steel with the very good toughness of a hot work steel.

Size Range:
Rd 81mm-182mm
Other sizes and profiles available on request.

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PDF / 1019 KB

W403

EN No (W-Nr) ~1.2367, AFNOR 38CDV5-3
Vacuum remelted hot work tool steel with high temper resistance and therefore maximum resistance to heat checking.

Size Range:
Fl 610x360mm - 810x365mm

Other sizes available on request.

PDF Download
PDF / 1621 KB

Uddeholm

The production base of Uddeholm is tool steel; however, our business idea is to sell and market tooling materials and services to tool makers, tool users, machine builders and their customers, providing the best total economy. Uddeholm have long experience in producing hot work tool steels for dies and extrusion tooling components. Uddeholm's extensive hot work tool steel range covers conventional and ESR melted grades and includes gades for die casting, extrusion tooling, forging, dies and other hot applications.

If you are unable to find the material you require please check Bohler Grades.

Title Type/Filesize Download

Orvar 2M

EN No (W-Nr) 1.2344, AISI H13
A Cr-Mo-V alloyed hot work steel with good high temperature strength and good resistance to abrasion.

Size Range:
Rd 76mm-560mm
Fl 35x28mm - 610x305mm

Other size available on request.

PDF Download
PDF / 143 KB

QRO-90

A premium hot work die steel with high hot yield strength and good temper resistance. Especially suited for die casting of copper and brass.

Size Range:
Rd 12mm-356mm
Fl 210x43mm - 407x207mm

Other sizes available on request.

PDF Download
PDF / 174 KB

Dievar

An E.S.R melted high performance chromium-molybdenum-vanadium alloyed hot work tool steel which offers a very good resistance to heat checking, gross cracking, hot wear and plastic deformation.

Size Range:
Rd 76.2mm - 712mm
Fl 407x230mm - 407x254mm

Other size available on request.

PDF Download
PDF / 568 KB

Orvar Supreme

EN No (W-Nr) 1.2344, AISI H13
An E.S.R melted Cr-Mo-V alloyed hot work steel with good high temperature strength and good resistance to abrasion.

Size Range:
Rd 10mm-220mm
Fl 105x54mm - 762x407mm

Other size available on request.

ESR

Electro Slag Remelted In Electro Slag Remelting the ingot is built up in a water cooled mould by melting a consumable electrode immersed in a superheated process slag. An electrical current flowing through the liquid slag, which provides the electrical resistance, generates the heat. As the slag temperature rises above the liquids temperature of the steel, the tip of the electrode melts. The reaction between slag and steel droplets results in a significant reduction in sulphur and non-metallic inclusions. The directional solidification of the ingot from bottom to top results in an ingot with a high homogeneity and freedom from macro - segregations. This gives uniform mechanical properties in the longitudinal and transverse directions after hot working. By utilizing homogenisation annealing of ingots, a high ingot break down and special heat treatment methods for structure refinement and strategy is fulfilled in optimising steel properties for an extended tool life.

 ESR melted and re-melted Grades Stocked

  • Uddeholm Orvar Supreme Listed above
  • Uddeholm Dievar Listed above
  • Uddeholm QRO 90 Listed above
  • Bohler W302 Isoblock Listed above
  • Bohler W360 Isoblock Listed above

 

VMR

Vacuum Melted & Remelted in order to obtain all the different properties specified, it is often necessary to combine various melting processes. (VMR internal Bohler description for Vacuum Arc Furnace known as VAR)

Advantages

  • Optimum ingot structure.
  • Minimum gas contents.
  • Minimum content of trace elements ( such as As, Sb, Sn, Cu)
  • Highly uniform distribution of any remaining inclusions. Optimum polishability. V
  • irtually isotropic properties.
  • High reproducibility thanks to process automation.
    Vacuum melted and re-melted Grades Stocked
    • Bohler W403VMR Listed above