CN3MN is one super stainless steel, which type 21 Chromium/24 Nickel with molybdenum and Nitrogen stainless steel grade which listed in ASTM A351, ASTM A743 and ASTM A744 standard. Casting UNS number is J94651. WWW.CASTINGQUALITY.COM
Casting Methods in Casting Quality Industrial:
- Sand Casting
- Investment Casting (Lost Wax Casting, Precision Casting)
CN3MN (UNS J94651) Equivalent Stainless Steel Grade:WW.CASTINGQUALITY.COM
N/A
Reference Casting Standards and others
ASTM A351 Standard Specification for Castings, Austenitic, for Pressure-Containing Parts:
ASTM A743 Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
ASTM A744 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service:

Our Services
- Sand Casting
- Investment Casting
- Shell Casting
- CNC Machining
- CAD Design
- Tools/Mold Design
WWW.CASTINGQUALITY.COM
Stainless Steel Grade | CN3MN Chemical Composition / Physical Properties % (max, except where range is given) | ||||||||||
Standard | Grade | Carbon | Manganese | Silicon | Sulfur | Phosphorus | Chromium | Nickel | Molybdenum | Nitrogen | Copper |
ASTM A743 | CN3MN | 0.03 | 2.00 | 1.00 | 0.01 | 0.04 | 20.0-22.0 | 23.5-25.5 | 6.0-7.0 | 0.18-0.26 | 0.75 |
ASTM A744 | CN3MN | 0.03 | 2.00 | 1.00 | 0.01 | 0.04 | 20.0-22.0 | 23.5-25.5 | 6.0-7.0 | 0.18-0.26 | 0.75 |
ASTM A351 | CN3MN | 0.03 | 2.0 | 1.00 | 0.01 | 0.040 | 20.0-22.0 | 23.5-25.5 | 6.0-7.0 | 0.18-0.26 | 0.75 |
CN3MN Heat treatment process: WWW.CASTINGQUALITY.COM
Heat to 1900°F [1040°C] minimum, hold for sufficient time to heat casting to temperature, quench in water or rapid cool by other means.
Or, as cast if corrosion resistance is acceptable
CN3MN Stainless Steel Mechanical Property WWW.CASTINGQUALITY.COM
Stainless Steel Grade | Tensile Strength min | Yield Strength, min | Elongation, min | Reduction of Reduction | Hardness, Max | |||||
Standard | Grade | UNS | Ksi | MPa | Ksi | MPa | % | min, % | Brinell | Rockwell B |
ASTM A743 | CN3MN | J94651 | 80 | 550 | 38 | 260 | 35 | – | – | – |
ASTM A744 | CN3MN | J94651 | 80 | 550 | 38 | 260 | 35 | – | – | – |
ASTM A351 | CN3MN | J94651 | 80 | 550 | 38 | 260 | 35 | – | – | – |
CN3MN Typical Application WWW.CASTINGQUALITY.COM
- Pump components
- Valve components
- HEAT EXCHANGERS
- WATER SYSTEMS
- OFFSHORE PLATFORMS
- FIRE-FIGHTING SYSTEMS
SERVICE IN QINGDAO CASTING QUALITY INDUSTRIAL
- SAND CASTING
- INVESTMENT CASTING
- SHELL CASTING
- PERMANENT MOLD CASTING
- CNC MACHINING