Plastic Mould Tool Steels

By: Special Steels and Metals  06-Dec-2011
Keywords: Steel, Plastics, Moulds

Choosing the optimum mould material for best tooling and production economy.

When a new moulded part is to be produced many important decisions have to be made in order to fulfil all requirements set. Decisions will depend on plastic material, production method, multi or single cavity, number of parts to be produced, tolerance and surface finish.

Right choice of tool materials for plastic moulding tools, should achieve:

High surface finish

  • Corrosion resistance
  • Wear resistance
  • High thermal conductivity
  • Good surface finish after EDM or photoetching

COLOUR CODE

AISI/ BS

W.Nr DIN

DESCRIPTION/ APPLICATION

FORMS AVAILABLE

BOHLER M200  

UDDEHOLM
HOLDAX

BLUE YELLOW

P20+S

1.2312

Chrome, Manganese, Molybdenum Steel with Sulphur, prehardened and tempered to 950 - 1100 Mpa.  For large and medium sized moulds, mould frames in plastics and Die Casting Industries.

Flat Bar

30 -130mm t

Block

BOHLER M238

PURPLE

P20+Ni

1.2738

Pre-hardened and tempered to 1000 Mpa.  Large Moulds (over 400mm thickness) for plastic processing mould carrier frames for plastic moulds, components for general mechanical engineering and tool manufacture.

Rounds

ø     12mm -
ø   600mm


PlatesBlocks

UDDEHOLM
IMPAX SUPREME

GREEN YELLOW

P20+Ni

1.2738

Premium quality vacuum degassed CrNiMo alloyed steel supplied hardened & tempered.  Good polishability and photo etching properties.  Injection moulds, blow moulds, forming tools, press brake dies .

Rounds

ø 12 - 
ø    600mm


PlatesBlocks

BOHLER M261

NEW

Solution annealed and precipitation hardened (approx 40 HRC) supply condition. Very good machining and Nitriding properties  

Rounds
ø  26 -
ø  192mm

BOHLER M315

UDDEHOLM
RAMAX  2

Pre-hardened corrosion resistant holder steel with very good machinability and high strength.
Hardness range in the supplied condition 330-360HB.

Available on
INDENT

BOHLER M310


YELLOW

420
modified

1.2083

Good corrosion and wear resistance with good polishability.  Moulds for PVC and plastics containing abrasive fillers.  Well suited for optical lens moulds.
Mechanical and food processing components.

Rounds

ø  12 mm - 
ø  403 mm

Flats

20 - 203mm t

Block

UDDEHOLM
STAVAX
SUPREME

NEW

ORANGE BLACK

420
modified
ESR

1.2083 mod.

Premium grade ESR stainless steel for moulding of corrosive materials e.g. PVC, Acetates, moulds for high production runs, high surface finish for optical parts, syringes etc.

Rounds

ø  12mm -
ø    420mm 

Flats

20 - 203mm t

Block

BOHLER M390

NEW

Corrosion and wear resistant stainless steel made by the powder metallurgy process.
Ideal for severely stressed wear parts such as screws and backflow check valves

Available on
INDENT

BOHLER M303

YELLOW PURPLE

1.2316

Stainless Martensitic Chromium Steel, high corrosion and wear resistance, good machinability and polishability.  Moulds for chemically aggressive plastics (PVC).  Supply condition 800 - 1000 Mpa.

Rounds

Diam 25mm -  Diam 250mm


Block

BOHLER M333
NEW

Best polishability,outstanding
toughness,very good corrosion resistance and improved thermal conductivity

Available on
INDENT

BOHLER M461 NEW


Supplied in the precipitation hardened (about 40 HRC hardness) condition. Good machinability, good photo-etching
properties.  For moulds and mould inserts.

Available on
INDENT

BOHLER M340

YELLOW PURPLE WHITE

440B mod.

High performance plastic mould steel with good corrosion against chlorides.  Good machinability and polishability.  Good dimensional stability.

Rounds

Diam 35mm -
Diam 102mm


COPPER AND ALUMINIUM ALLOYS:UDDEHOLM  MOLDMAX  HH  (available from stock)
UDDEHOLM  MOLDMAX  XL   (available on indent) 
UDDEHOLM  PROTHERM      (available on indent)
UDDEHOLM  ALUMEC  89      (available from stock) 
SPECIAL:UDDEHOLM UNIMAX  For a list of the complete range, please refer to Uddeholm Downloads  

Keywords: Die Casting, Moulds, Plastic Moulding, Plastics, Steel

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