October 12, 2019

Stainless Steel CA6NM (J91540)

CA6NM is one type 12 Chromium 4 Nickel stainless steel Casting grade which listed in ASTM A743 and ASTM A352 standard only. UNS code is J91540. It’s one “400” series materials are general high strength corrosion resistant alloys.

Casting Methods in Casting Quality Industrial:

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

Similar Stainless Steel Grade:?


Reference Casting Standards:

ASTM A743 Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.

ASTM A352 Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service.

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 Grade CA6NM Chemical Composition / Physical Properties %
(max, except where range is given)
Standard Grade Carbon Manganese Silicon Sulfur Phosphorus Chromium Nickel Molybdenum
ASTM A743 CA6NM 0.06 1.00 1.00 0.04 0.03 11.5-14.0 3.5-4.5 0.4-1.0
ASTM A352 CA6NM 0.06 1.00 1.00 0.04 0.03 11.5-14.0 3.5-4.5 0.4-1.0


CA6NM Heat treatment process:

Heat to 1850°F [1010°C] minimum, air cool to 200°F [95°C] maximum prior to any optional intermediate temper, but shall cool to 100°F [40°C] maximum before the final temper. The final temper shall be between 1050°F [565°C] and 1150°F [620°C].


CA6NM Stainless Steel Mechanical Property

ASTM A743 CA6NM don’t need impact requirement, but ASMT A352 CA6NM required impact testing at -100°F [-73°C]. Buyers should confirm the Standard in drawings.

Stainless Steel Grade Tensile Strength min Yield Strength, min Elongation, min Reduction of Area, min Hardness max Impact Requirement Charpy V-Notch Ft-lbf [J]
Standard Grade UNS Ksi MPa Ksi MPa % % HB Average Single Temperature °F [°C]
ASTM A743 CA6NM J91540 110 755 80 550 15 35 285
ASTM A352 CA6NM J91540 110-135 760-930 80 550 15 35 20 [27] 15[20] -100 [-73]


CA6NM Typical Casting Application

  • Pump Castings.
  • Valve Castings.
  • Water Turbines castings: Francis Blade, Runner Crown, Wicket Gates.
  • Heat Exchanger System.

Metal Castings

Stainless Steel ASTM A352, ASTM A743, CA6NM

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