August 15, 2019

Duplex Stainless Steel CD3MWCuN (6A)

CD3MWCuN (UNS J93380), is super duplex stainless steel, with greater corrosive resistance than standard SS2205, mainly used for service in high corrosive conditions. WwW.CASTINGQUALITY.COM

Grade CD3MWCuN; ASTM A890 Grade 6A; ASTM A995 Grade 6A, Type 25Cr-7Ni-Mo-N; Casting UNS J933380; ACI CD3MWCuN;

Casting Methods in Casting Quality Industrial:

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

CD3MWCuN, 6A (UNS J93380) Equivalent Stainless Steel Grade:WwW.CASTINGQUALITY.COM

ASTM A789 /ASTM A790/ASTM A276: Wrought UNS S32760;

ASTM A182 F55


Reference Casting Standards and others:

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.

ASTM A995/995M Standard Specification for Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts.

Pump Cover for liquid ring vacuum pump

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 GradeCD3MWCuN Chemical Composition / Physical Properties %
(max, except where range is given)

CD3MWCuN Heat treatment process: WWW.CASTINGQUALITY.COM

Heat to 2010°F [1100°C] minimum, hold for sufficient time to heat casting uniformly to temperature, quench in water or rapid cool by other means.

CD3MWCuN Stainless Steel Mechanical Property: WWW.CASTINGQUALITY.COM

Stainless Steel GradeTensile Strength minYield Strength, minElongation, min
ASTM A8906ACD3MWCuNJ933801006906545025
ASTM A9956ACD3MWCuNJ933801006906545025


CD3MWCuN compared with other similar stainless steel grades: WWW.CASTINGQUALITY.COM

Steel GradeCMnPSSiNiCrMoNCuW
A182 F55S327600.031.000.0300.0101.006.0-8.024.0-26.03.0-4.00.20-0.300.50-1.000.50-1.00


Steel GradeTensileYieldElongationReductionHardness
A182 F53S32760109-130Ksi(750-895Mpa)80Ksi (550Mpa)25%45%


S32760109-130Ksi(750-895Mpa)80Ksi (550Mpa)25% –270HB
A479S32760109Ksi(750Mpa)80Ksi (550Mpa)25%300HB


CD3MWCuN Typical Application

  • Pump components casting
  • Valve components casting
  • Heat exchangers
  • Offshore systems.
  • Pressure vessels.


Metal Castings

Duplex Stainless , , ,

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