Every application is unique and we offer solutions that are specific to your individual needs. Matching the feed screw and barrel material to the characteristics of your plastic, rubber, metal, or other extruded/injected material is the best way to maximize your machine’s durability and function, increase the longevity of the parts, minimize any potential problems, and improve the quality and consistency of your final parts.


From general all-purpose feed screws and barrels, to feed screws with a variety of flight designs for specialty applications, to upgrades that will boost output and quality and minimize scrap rates, or extremely aggressive feed screw or barrel requirements, we are the experts you are looking for.


We work with a variety of materials, including (but not limited to):

  • Alloy steel
  • American Iron and Steel Institute (AISI) 4140, 4150, and 4340
  • Boron
  • Chrome
  • Chromium
  • Cobalt
  • Duranickel
  • Hastelloy
  • Nickel and nickel alloys
  • Nitralloy 135M
  • Stainless steel
  • Tool steel
  • Tungsten
  • And many more


We work with a wide variety of manufacturers who inject or extrude, including (but not limited to): 

  • Ceramic injection molding (CIM) materials
  • Elastomers
  • Engineering plastics
  • Fluoropolymers
  • General plastics (ABS, AS, HDPE, LDPE, PA, PC, PET, PMMA, PO, PP, PPS, PS, PU, and more)
  • High temperature materials
  • Metal injection molding (MIM) materials
  • Powder injection molding materials
  • PVC (both flexible and ridgid)
  • Regrinds or recycled materials
  • Silicone
  • Thermoplastics
  • Thermosets
  • And many more

No one knows injection and extrusion screws and barrels like Santa Fe Machine Works.


Our coating and surface treatment options include (but are not limited to):

  • Age hardening
  • Armoloy™ (TDC: Thin Dense Chromium)
  • Chrome encapsulation
  • Chrome-plating root surfaces
  • Ion nitriding
  • Nickel plating
  • TiN coating
  • US thermal and Surface Engineering Carbide coatings
  • And more


Our hardfacing options include (but are not limited to):

  • #C56
  • #C83
  • Stellite #6

Please inquire for other PTA hardfaced welds if your preference is not listed above.
We are happy to discuss the benefits and draw backs with you to help you select the correct
material and to determine if hardfacing is right for your application.


Alloy Steels

  • 4140 Quenched and tempered 28 to 32 RC
  • 4340 Quenched and tempered 28 to 32 RC
  • N135 Modified
  • 17-4 PH Stainless Steel

Tool Steels

  • Z-9PM tool steel through hardened to 55-56 RC
  • Z-420PM tool steel through hardened to 54-55 RC
  • CPM-9V tool steel through hardened to 54/55 RC
  • CPM-S90-V stainless tool steel through hardened to 54/55 RC
  • Lescowear™ tool steel through hardened to 60/62 RC
  • D-2 Tool steel through hardened to 60/62 RC

Super Alloys

  • Hastelloy®
  • Monel®
  • Inconel®

Weld Overlays

  • Colmonoy 56®
  • Colmonoy 83®

Additional Plating, Surface Treatments

  • Chrome encapsulation
  • Chrome plating root surfaces
  • Ion Nitriding NITRIDING
  • Armoloy™ (TDC: Thin Dense Chromium)
  • Flame hardened flight O.D.
  • Age hardening

Carbide Encapsulation

  • Extreme coatings carbide encapsulation with 2 different coating thicknesses and 3 different finishes available


JP 38 High strength alloy steel

Tan Star High-Performance Bimetallic Barrel linings

  • TP-F Nickel base for corrosive resistance
  • F10 Iron/Boron for general purpose
  • T10 Nickel base with carbide for <15% glass fiber
  • T25 Nickel base with carbide for <30% glass fiber
  • T40 Nickel base with carbide for <50% glass fiber
  • T60 Nickel base with carbide for Halogen free materials with high corrosion resistance

Other High-Performance Bimetallic Barrels linings

  • R241 Nickel base with carbide for high wear and moderate corrosion resistance
  • R112 Iron base for general purpose
  • BO55 Nickel base and 0% iron content casted by HIP (Hot Isostatic Pressing) for severe corrosive resistance



  • 3, 4, and 6 piece fluted designs
  • 4 piece designs
  • Locking designs
  • Ball Check
  • Smear Tips


  • 4150 Retainers
  • 17-4 PH Stainless steel retainers
  • D-2 Tool steel
  • CPM-9V
  • CPM-10V
  • S90V
  • PM-M4 High speed tool steel
  • H-13 Heat Treated
  • H-13 Heat Treated and nitrided
  • Chrome encapsulated
  • Hastelloy®
  • Inconel®
  • Solid carbide check rings
  • Carbide inserted front seats and check rings (patented)



  • 4150 Steel
  • 17-4 PH Stainless steel
  • H-13 Heat treated
  • H-13 Heat treated and nitrided

Additional Plating, Surface Treatments

  • Chrome plated I.D.
  • Armoloy™ (TDC: Thin Dense Chromium)
  • Nitride
  • PVD

Have a question or want to get started on your next project?