April 12, 2020

Duplex Stainless Steel CD6MN (3A,UNS J93371)

CD6MN (UNS J93371) is casting duplex stainless steel (austenitic/ferritic) in ASTM A995 and ASTM A890. The duplex stainless steel alloys offer a combination of enhanced mechanical properties and corrosion resistance.

Casting Material Grades: ASTM A995 Grade 3A; ASTM A890 Grade 3A; Type 25Cr-5Ni-Mo-N; Casting UNS J93371; ACI CD6MN;

Casting Methods in Casting Quality Industrial: castingquality.com

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

Reference Casting Standards and otherscastingquality.com

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

Stainless Steel Backup Rings

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.

CD6MN (UNS J93371) Chemical composition (nominal) %:  castinquality.com 

Stainless Steel GradeCD6MN Chemical Composition / Physical Properties %
(max, except where range is given)
ASTM A890 Grade 3ACD6MNJ933710. 6.01.75- 2.50.15- 0.25
ASTM A995 Grade 3ACD6MNJ933710.0601.001.000.0400.04024.0-27.04.0- 6.01.75- 2.50.15- 0.25


CD6MN (3A, UNS J93371) Stainless Steel Mechanical Propertycastinquality.com

Tensile Strength, min 90ksi [620Mpa];

Yield strength, min 60Ksi [415Mpa];

Elongation 25%


Stainless Steel CD6MN (3A, UNS J93371) Casting Heat treatment process:castinquality.com

Heat to 1950°F [1070°C] minimum, hold for sufficient time to heat casting uniformly to temperature, quench in water or rapid cool by other means.

CD6MN ( 3A, UNS J93371) Hardness (Reference only): ≤HB300(HRC32)

CD6MN (3A, UNS J93371) Casting Typical Application


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