October 12, 2019

Stainless Steel CA6NM (J91540)

CA6NM is one type 12 Chromium 4 Nickel stainless steel Casting grade which listed in , and ASTM A487 standard. UNS code is J91540. ASTM A757 Grade E3N is same as CA6NM. It’s one “400” series Martensitic Chromium Nickel stainless steel with general high strength corrosion resistant. castingquality.com

Casting Methods in Casting Quality Industrial:

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

All Stainless Steel Grades: www.castingquality.com
Grade CA6NM, UNS J91540.
Grade CA6NM, UNS J91540.
ASTM A487 Grade CA6NM, Class A.
ASTM A487 Grade CA6NM, Class B.
ASTM A757 Grade E3N.

CA6NM  Equivalent Stainless Steel Grades:
AFNOR NF A35-573 Grade Z6CN13-04
BS1504 Grade 425C11
AISI 415, SAE 415
EN 10088-1 Grade X3CrNiMo13-4 (EN 1.4313)
EN 10283 Grade GX4CrNi13-4 (EN 1.4317)
EN 10250 Grade X3CrNiMo13-4 (EN 1.4313)
ASTM A182 Grade F6NM
GB/T 6967 Grade ZG04Cr13Ni5Mo

Reference Casting Standards: www.castingquality.com

Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.
Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service.
ASTM A487 Standard Specification for Steel Castings Suitable for Pressure Service.
ASTM A757 Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure- Containing and Other Applications, 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.


CA6NM Chemistry Property:

Stainless Steel GradeCA6NM/E3N Chemical Composition / Physical Properties %
(max, except where range is given)
ASTM A757E3N0.

ASTM A487 Grade CA6NM (Class A or B) and ASTM A757 Grade E3N also require total content of residual elements 0.50 (Cu 0.50, W 0.10, V 0.05)

CA6NM Heat treatment process: www.castingquality.com
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].
In standard of ASMT A487, CA6NM has two classes A and B based on heat treatment process. CA6NM Class A should be tempered at can be at 1050-1150°F [565-650°C], and CA6NM Class B can be tempered in 1225-1275°F [665-690°C] or 1050-1150°F [565-650°C].

CA6NM Stainless Steel Mechanical Property:www.castingquality.com 
/A487 Grade CA6NM don’t require impact requirement, but ASMT A352 Grade CA6NM and ASTM A757 Grade E3N require impact testing at -100°F [-73°C]. Buyers should confirm the Standard in drawings. ASTM 487 Grade CA6NM (Class A and B) has two mechanical properties because of its difference of heat treatment requirement.

Stainless Steel GradeTensile Strength minYield Strength, minElongation, minReduction of Area, minHardness maxImpact Requirement Charpy V-Notch Ft-lbf [J]
StandardGradeUNSKsiMPaKsiMPa%%HBAverageSingleTemperature °F [°C]
CA6NMJ91540110-135760-93080550153520 [27]15[20]-100 [-73]
ASTM A487CA6NM Class A110-135760-930805501535
ASTM A487CA6NM Class B100690755151735255
ASTM A757E3N11076080550153520 [27]15[20]-100 [-73]

CA6NM Typical Casting Application

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

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