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Plastic Mould Steel


Process for PM tool steel     High Alloy Steels will gain improved properties by increasing the solidification rate. This gives a fine microstructure and small, well-distributed carbides in the matrix.

During Powder Metallurgy (PM), the melt stream is atomised by nitrogen gas into small droplets with an average size of 50-100 µm. The powder is filled into capsules directly in order to avoid contamination. With hot isostatic pressing (HIP), the powder is consolidated to 100% density.

By using a special refining sequence, the cleanliness of the molten steel is improved prior to atomisation. This results in improved mechanical properties and an extremely low non-metallic inclusion level (SuperClean™).

The HIP'ed PM capsules are hot forged and rolled to smaller bar sizes followed by heat treatment and machining.

PM steels are used in very demanding applications within cold work, plastic and cutting tools.
Uddeholm

Uddeholm offer solutions to virtually all sections of the plastic industry. We offer tooling materials and procedures to maximise total economy regardless of wether quick and short, medium, long or very long production runs are required. Products include pre-hardened, holder steels, through hardening steels, corrosion resistant steels and powder metallurgy steels.

 

If you are unable to find the material you require please check Bohler steel grades.
Impax Supreme

  • EN No (W-Nr) 1.2738, AISI P20 Mod
  • Description:- A pre-hardened Ni-Cr-Mo steel supplied at 290-330HB, with excellent polishing and photo-etching properties.
  • Size Range:- Rd 12.7mm - 800mm, Fl 75x25mm - 1050x496mm, Sq 33mm
  • Other Sizes available on request.
Holdax

  • EN No (W-Nr) 1.2312 
  • Description:- A prehardened steel with good machinability supplied at ~300 HB for clamping and holding plates..
  • Size Range:-  Fl 121x35mm - 1000x415mm
  • Other sizes available on request.
Impax Hi Hard

  • EN No (W-Nr) 1.2738, AISI P20 Mod
  • Description:- A pre-hardened Ni-Cr-Mo steel supplied at a higher hardness than Impax Supreme 360-400HB, with excellent polishing and photo-etching properties.
  • Size Range:- available on request

     

    		•
    Ramax 2

    • AISI 420F
    • A pre-hardened corrosion resistant holder steel with good machinability and high strength. Supplied 330-360 HB.
    • Size Range:- Rd 28mm, Fl 603x98mm - 1000x230mm
    • Other sizes available on request.
    Corrax

    • Description:- A precipitation hardening steel with extremely good corrosion resistance.
    • Size Range:- 50.8mm - 254mm, Fl 250x63mm - 305x102mm
    • Other sizes available on request
    Stavax ESR

    • EN No (W-Nr) ~1.2083, AISI 420 Mod
    • Description:- A through hardening corrosion resistant mould steel with very good polishability. Recommended for medium to small moulds.
    • Size Range:- Rd 12.7mm -508mm, Fl 102x51mm - 585x565mm, Sq 407mm
    • Other sizes available on request
    Mirrax ESR

    • AISI 420 mod 
    • Description:- A through hardening corrosion resistant mould steel with very good polishability. Recommended for medium to large moulds.
    • Size Range:- Rd 80mm - 457mm, Fl 457x102mm - 762x306mm, Sq 407mm
    • Note:- Heat Treatment is different to Stavax ESR contact your nearest branch for details.
    • Other sizes available on request.
    Elmax

    • Description:- Elamx is a Powder Metallurgy corrosion resistant grade.
    • Size Range:- Rd 57.2mm-80mm, Fl 75x50mm-254x102mm
    • Other sizes available on request


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    Bohler steel

    For the manufacture of plastic parts, steels are required which have a high wear resistance and good polishability, which can be easily machined, grained have adequate corrosion resistance. Depending on the properties required, case-hardening steels, heat treatable steels, corrosion resistant steels, nitriding steels and martensite hardening steels or high performance powder metallurgical materials are used. The quality of Bohler steels is second to none and fills all of the above requirements.
    If you are unable to find the material you require please check Uddeholm grades.
    M238

    • EN No (W N-r) 1.2738
    • Description:- Plastic moulding grade combines properties of low sulphur and sulphur types, through good machinability, good polishability and optimum photo-etching properties. Bath and gas nitriding as well as nitriding are possible.
    • Size Range:-  Fl 1010x25mm - 1800x450mm, Sq 805mm-1100mm
    • Other sizes available on request.
    M238 VMR

    • EN No:- (W-Nr) ~1.2738
    • Description:- Vacuum remelted hadened and tempered plastic mould steel, with excellent cleanliness for best polishbility, with the hardness being constant across the entire cross section.
    • Size Range:- Fl 610 x 490mm
    • Other szes available on request.
    M200

    • EN No (W -Nr) 1.2312 AISI ~P20 
    • Description:- Pre-hardened Cr-Mo sulphurised steel. Suitable for plastic moulds and holder blocks for the plastic processing and die casting industries, as well as components for general mechanical engineering. Can be case and flame hardened, gas nitrided the chromium plated.
    • Size Range:- Rd 20mm - 770mm, Fl 12x50mm - 800x1020mm, Sq 20mm - 105mm
    • Other sizes available on request.
    M333

    • Description:- A through hardening corrosion resistant mould steel, offering optimum polishability, improved thermal conductivity, exceptional toughness and hardness and very good corrosion resistance
    • Size Range:-  Fl 403x203mm
    • Other sizes available on request.
    M315

    • Description:- A corrosion resistant mould frame / bolster steel with a significantly improved machinability compared to 1.2085 steels.
    • Size Range:- Available on request.
    M340

    • Description:- A M340 offers excellent corrosion resistance, good dimensional stability during heat treatment.
    • Size Range:- Rd 20.5mm-302.5mm, Fl 400x300mm
    • Other sizes available on request.
    M310

    • EN No (W N-r) ~1.2083 AISI ~420
    • Description:- Advanced martensitic stainless chromium steel for plastic moulds. 
    • Size Range:- Rd 20.5mm - 353mm
    • Other sizes available on request.
    M300

    • EN No (W-Nr) ~1.2316
    • Description:- A through hardening martensitic corrosion resistant mould steel with good machinability and polishability. 
    • Size Range:-  Fl 1010x45mm - 1250x305mm
    • Other sizes available on request.
    M390

    • Description:-  Plastic mould steel produced by Powder Metallurgy method, for chemically aggressive moulding compounds and plastics containing abrasive fillers. 
    • Size Range:- Sizes available on request.


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    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 Grades Stocked

    • Uddeholm Stavax ESR Listed above
    • Uddeholm Stavax Supreme Listed above
    • Bohler M333 Listed above


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    Powder Metallurgy

    Process for PM tool steel     High Alloy Steels will gain improved properties by increasing the solidification rate. This gives a fine microstructure and small, well-distributed carbides in the matrix.

    During Powder Metallurgy (PM), the melt stream is atomised by nitrogen gas into small droplets with an average size of 50-100 µm. The powder is filled into capsules directly in order to avoid contamination. With hot isostatic pressing (HIP), the powder is consolidated to 100% density.

    By using a special refining sequence, the cleanliness of the molten steel is improved prior to atomisation. This results in improved mechanical properties and an extremely low non-metallic inclusion level (SuperClean™).

    The HIP'ed PM capsules are hot forged and rolled to smaller bar sizes followed by heat treatment and machining.

    PM steels are used in very demanding applications within cold work, plastic and cutting tools.

    Powder Metallurgy Grades Stocked

    • Bohler M390 Listed above
    • Uddeholm Elmax Listed above


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    Uddeholm

    Bohler steel

    ESR

    Powder Metallurgy
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