International Mold Steel

Plastic & Rubber Mold Steels

Overview  

Our industry leading steels feature uniform hardness and clean microstructures for machining, stability in use, and maintenance resulting in superior plastic and rubber mold.

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Pre-Hardened Tool Steel Saves Time and Money

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High-Performance Mold Steel
In the past 30 years, there have been tremendous improvements in machine and cutting tool technologies. High-speed machining can accomplish cutting speeds and accuracies that toolmakers in the past could only dream of.

DH2F

DH2F is a modified H-13, pre-hardened 37-41 HRC.

Unique Characteristics

  • 38-42 HRc hardness.
  • Through hardened for exceptional dimensional stability.
  • Cuts mold-making costs by reducing man hours required for machining.

NAK 55

NAK55 is a 40 HRC pre-hardened, high performance, high precision, mold steel.

Unique Characteristics:

  • Machines 30- to 40 percent faster than P20
  • Pre-hardened to 38-42 HRC
  • Uniform microstructure & hardness (40 HRC between surface & interior)

NAK80

NAK80 is a 40 HRC pre-hardened, high performance, high precision, lens-quality mold steel.

Unique Characteristics

  • Machines up to 20 percent faster than 30 HRc P20
  • Pre-hardened to 38-42 HRC
  • Uniform microstructure & hardness (40 HRC between surface & interior)

PX5

PX5 is a modified P20, high performance, high precision, mold steel.

Unique Characteristics:

  • Exceptionally stable steel with clean, uniform microstructure – no pin holes, inclusions or hard spots.
  • 29-33 HRC hardness.
  • Uniform hardness throughout, even in heavy sections.

S-Star

420 ESR Stainless Steel

Unique Characteristics:

  • Excellent corrosion resistance
  • High hardness: maximum 53 HRC is obtained
  • Superb mirror-finish surface

Superplast® Stainless

Superplast Stainless is a prehardened, free-machining, stainless mold steel specially designed for plastic mold bases. It also provides improved performances compared to standard grades such as W1.2085.

Superplast Stainless offers Plastic & Rubber molds:

  • Improved machinability
  • Improved consistency and weldability

Moreover, thanks to its low Carbon and 12% Chromium content, Superplast Stainless ensures good corrosion resistance, both in humid atmospheres and in corrosive molding environments (PVC).

Toolox 33

TOOLOX 33 is a quenched and tempered tool steel designed to have low residual stresses and extremely good machinability.

Unique Characteristics:

  • Especially suited for plastic molds and rubber molds, having excellent polishing and photoetching ability.
  • Supplied in plate thickness 1/2” – 5 1/8”.
  • Hardness 30-35 HRC.

Toolox 44

TOOLOX 44 is a new quenched and tempered tool steel designed to have high impact and low residual stresses and therefore good dimensional stability.

Unique Characteristics:

  • Despite hardness of nominal 45 HRC, this new steel is easy to machine.
  • Particularly suitable for manufacturing plastic molds because it can be polished and etched with very good results.
  • Great for guide rails, bending tools, etc. when high stability materials are required.
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