MONEL® alloy 404 is a nickel-copper alloy renowned for its excellent corrosion resistance and high strength, particularly in marine environments. This product introduction covers its chemical composition, mechanical properties, performance across different temperatures, industry applications, shapes, sizes, production standards, welding, machining, polishing, heat treatment, cold working, advantages and disadvantages, and similar products.
التركيب الكيميائي
عنصر
تعبير (٪)
النيكل (ني)
52.5 min
Copper (Cu)
27.0-33.0
الحديد (الحديد)
1.0 كحد أقصى
المنغنيز (من)
1.5 max
السيليكون (سي)
0.5 كحد أقصى
الكربون (ج)
0.3 max
الكبريت (S)
0.02 max
الخواص الميكانيكية
ملكية
قيمة
Tensile Strength (Annealed)
450 MPa (65 ksi) min
Yield Strength (Annealed)
170 MPa (25 ksi) min
Elongation (Annealed)
40% min
Hardness (Annealed)
70 HRB max
الأداء في درجات حرارة مختلفة
Temperature Range
Performance
Room Temperature
Excellent corrosion resistance, good mechanical properties
Elevated Temperatures (up to 300°C / 570°F)
Maintains strength and toughness
Cryogenic Temperatures
Retains ductility and toughness
تطبيقات الصناعة
MONEL® alloy 404 finds applications in various industries for its corrosion resistance and mechanical properties:
Industry
التطبيقات
Marine
Shipbuilding, seawater piping
المعالجة الكيميائية
Sulfuric acid production, chemical vessels
الفضاء الجوي
Aircraft components, fuel tanks
Oil & Gas
Valve trim, pump shafts
الأشكال والأحجام ومعايير الإنتاج
Shapes and Sizes
استمارة
نطاق الحجم
صفائح
Thickness: 0.5 mm – 3 mm
لوحات
Thickness: 1 mm – 50 mm
الحانات
Diameter: 6 mm – 100 mm
أنابيب
OD: 6 mm – 500 mm
أنابيب
OD: 6 mm – 300 mm
Production Standards and Corresponding Grades
Country
معيار
Corresponding Grade
United States
ASTM B127, ASTM B164
UNS N04404
ألمانيا
DIN 17750, DIN 17751
2.4867
فرنسا
AFNOR NFM 87-310
-
United Kingdom
BS 3072, BS 3073
NA12
Japan
JIS NW 4404
-
China
GB/T 12771, GB/T 12770
-
Welding, Machining, Polishing, Heat Treatment, and Cold Working
عملية
تفاصيل
لحام
Welds with matching composition filler metals. Suitable methods include gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW).
بالقطع
Requires sharp tools and proper cooling. Carbide tools are recommended for turning and milling operations.
تلميع
Achieves good surface finish with mechanical methods like buffing and polishing wheels. Chemical polishing is also effective.
المعالجة الحرارية
Annealing at 870°C (1600°F) followed by water quenching improves ductility and removes residual stresses.
Cold Working
Can be cold worked to various degrees for shaping. Cold working increases strength and hardness.
المميزات والعيوب
وجه
مزايا
سلبيات
مزايا
Excellent corrosion resistance
Limited availability in certain forms
High strength and toughness
Machining can be challenging
Good ductility and toughness
Relatively high cost compared to some alternatives
Suitable for marine and chemical processing applications
منتجات مماثلة
Material Grade
مقارنة
Alloy K-500
Similar composition with added aluminum and titanium for increased strength and hardness.
خاتمة
MONEL® alloy 404 is a versatile nickel-copper alloy ideal for applications requiring corrosion resistance and high strength in harsh environments. Its combination of mechanical properties and resistance to marine and chemical environments makes it suitable for a wide range of industries. Engineers and designers seeking a durable material with excellent performance characteristics can rely on MONEL® alloy 404 for dependable solutions.
For detailed technical specifications and customized solutions, consulting with material suppliers and referencing specific product data sheets is recommended.lting with material suppliers and referencing specific product data sheets is recommended.
