December 8, 2014

CD4MCu-Duplex Stainless Steel-Casting Material

CD4MCu is a Fe-Cr-Ni-Mo duplex stainless steel, with greater corrosive resistance than standard 18-8 Cr-Ni and 18-14-2/18-14-3 Cr-Ni-Mo stainless steel parts.

ASTM A890 Grade 1A; Type 25Cr-5Ni-Mo-Cu; UNS J93370; ACI CD4MCu; Z3CNUD26•05M; 0Cr26Ni5Mo2Cu3; Grade CD4MCu.

Casting Methods in Casting Quality Industrial:

  • Sand Casting
  • Investment Casting (Lost Wax Casting, Precision Casting)

Reference Casting

Standard Specification for Castings, Austenitic, for Pressure-Containing Parts.
ASTM A890/890M Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application.

Stainless Steel Pump Head, Pump Housing, Pump casing

Our Services

  1. Sand Casting

    Casting Quality focus on Metal Parts industry, we provide professional service in Metal Casting field.

    Sand Casting is a popular metal form method, are suitable for all materiel, such as grey iron, ductile iron, malleable iron, carbon steel, stainless steel, aluminum and bronze.

  2. Investment Casting

    also named as precision lost wax casting, mainly suitalbe for carbon steel and stainless steel parts. We also provide grey iron and ductile iron and aluminum and bronze parts by investment casting. It can achieve the best appearance with good tolerance

  3. Shell Casting

    Shell casting method is a good option to replace investment casting and sand casting. the quality is better than sand casting parts, suitable for bulk production.

  4. CNC Machining

    CNC Milling, CNC turning with 5 xix CNC center, we provide precision machining for all castings based on customers design drawings.

  5. CAD Design

    Mechanical Design service based on customers requirement, our software is Solidworks and AutoCAD.

  6. Tools/Mold Design

    Mould design and production will be served for metal casting ad plastic injection industry. Based on our more than 10 years experience, we supply professional molds for our customers in Europe and North American.

Stainless Steel GradeCD4MCu Chemical Composition / Physical Properties %
(max, except where range is given)
CD4MCu0. 26.54.75-6.001.17- 2.252.75-3.25
ASTM A8901ACD4MCu0. 26.54.75- 6.001.75- 2.252.75-3.25


CD4MCu Casting Tensile Requirements: WWW.CASTINGQUALITY.COM

Tensile Strength, min100ksi [690Mpa]; Yield strength, min 70Ksi [485Mpa]; Elongation 16%


CD4MCu Casting Heat treatment process: WWW.CASTINGQUALITY.COM

Heat to 1900°F [1040°C] minimum, hold for sufficient time to heat casting uniformly to temperature, quench in water or rapid cool by other means.




CD4MCu is widely used in pump industry, especially in abrasive applications, such as pump casing and pump impeller. And CDM4Cu won’t pit like regular stainless steel, has a better stress/corrosive cracking resistance than standard stainless, and higher strength than standard stainless steel. And compared with regular cast iron material, it is much more resistant to corrosion and much stronger.

We made mistakes to name CD4MCu as SS2605 in our first revision, if you find any SS2605 in google, they coped our mistakes yet.


CD4MCu Casting Application:

  • Corrosion and pitting resistance
  • Better for abrasive applications
  • Higher strength than standard stainless steel
  • Improved ductility and weldability
  • Better resistance to embrittlement




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