CN7MS Stainless Steel Properties, Composition & Equivalent
CN7MS ASTM A744 Grade(UNS): J94650 Alloy Family: Super Austenitic Stainless Steel
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What is CN7MS Stainless Steel ?
CN7MS alloy is an improved version of CN7M alloy, which is a super austenitic stainless steel alloy.
It is belongs to a nickel alloy.
This alloy can resistant to sulfuric acid. It is suitable for working in a corrosive environment and is often used in waste treatment equipment, transportation, and so on.
CN7MS chemical composition
| C | Mn | Si | P | S | Cr | Ni | Mo | Copper | |
| Max | 0.07 | 1.00 | 3.50 | 0.04 | 0.03 | 22.0 | 25.0 | 3.0 | 2.0 |
| Min | – | – | 2.50 | – | – | 18.0 | 22.0 | 2.5 | 1.5 |
Heat treatment
Heat to 2100°F [1150°C] minimum, 2150°F [1180°C] maximum, hold for sufficient time (2 h minimum) to heat
casting to temperature and quench in water
Mechanical Properties
| Grade | CN7MS |
| Yield Strength, min | Ksi – 30, MPa – 205 |
| Tensile Strength, min | Ksi – 70, MPa – 485 |
| Elongation[50mm], min / % | 35 % |
Features
- Excellent stress resistance
- Excellent corrosion cracking resistance
- Good resistance to local reduction
Applications
- Feed
- Beverage equipment
- Waste disposal
- Pharmaceutical application