A comprehensive comparison guide for Nickel Aluminum Bronze (NAB) tubes – C95800, C63200, and C95500. Detailed analysis of chemical composition, mechanical properties, corrosion resistance, and application-specific recommendations for marine, chemical processing, and industrial uses.

1. Chemical Composition Analysis

1.1 Primary Chemical Composition

The precise control of alloying elements significantly influences mechanical properties, corrosion resistance, and overall performance. Each element serves specific functions in the alloy:

عنصرC95800 (%)C63200 (٪)C95500 (%)Impact on Properties
نحاس79.0-82.081.0-83.078.0-82.0Base metal matrix
الألومنيوم (آل)8.5-9.58.5-9.58.2-9.5Strength enhancement
النيكل (ني)4.0-5.04.0-4.83.0-5.5المقاومة للتآكل
الحديد (الحديد)3.5-4.53.5-4.33.5-4.5Grain refinement
المنغنيز (من)0.8-1.51.2-2.00.8-1.5Deoxidation

1.2 Trace Elements Control

عنصرC95800C63200C95500Critical Control
السيليكون (سي)0.100.100.10Fluidity control
الرصاص (الرصاص)0.030.020.03Toxicity limit
الزنك (الزنك)0.200.200.20Corrosion control
مجموع الآخرين0.500.500.50Quality control

2. Mechanical Properties

2.1 Room Temperature Properties

ملكيةC95800C63200C95500Test Standard
قوة الشد (MPa)585-760640-720650-790ASTM E8
قوة الخضوع (ميجا باسكال)270-380280-380280-450ASTM E8
استطالة (٪)15 min15 min15 minASTM E8
صلابة (برينل)160-190160-200170-210ASTM E10
Impact Strength (J)343434ASTM E23

2.2 Elevated Temperature Properties

درجة الحرارة (درجة مئوية)ملكيةC95800C63200C95500
100قوة الشد (MPa)550650680
100قوة الخضوع (ميجا باسكال)250310330
200قوة الشد (MPa)480600630
300قوة الشد (MPa)410520550

3. Physical Properties

3.1 Basic Physical Properties

ملكيةC95800C63200C95500Units
سمك 12-300 مم × عرض 200-2300 مم7.647.457.58ز / سم³
مدى الذوبان1040-10801030-10601045-1080درجة مئوية
توصيل حراري384245W/m·K
المقاومة الكهربائية13.513.312.8μΩ·cm
معامل المرونة115110113المعدل التراكمي

3.2 Thermal Expansion

Temperature Range (°C)C95800C63200C95500Units
20-10016.216.416.2μm/m·K
20-30017.317.517.3μm/m·K

4. Corrosion Resistance

4.1 Corrosion Rates in Various Environments

بيئةC95800 (mm/year)C63200 (mm/year)C95500 (mm/year)
مياه البحر0.0250.0250.025
Fresh Water0.0130.0130.013
3% NaCl0.0280.0280.028
الجو الصناعي0.0080.0080.008

4.2 Environmental Resistance Ratings (1-10 Scale)

بيئةC95800C63200C95500ملاحظات
البحرية999All excellent
المعالجة الكيميائية878C95800/C95500 preferred
ارتفاع درجة الحرارة788C63200/C95500 preferred
Erosion988C95800 superior
Cavitation878C95800/C95500 better

5. Application Suitability

5.1 Industry-Specific Applications

صناعةC95800C63200C95500Best Choice
Marine PropulsionممتازجيدممتازC95800/C95500
المعالجة الكيميائيةجيد جدًاجيدممتازC95500
Oil & Gasممتازجيد جدًاممتازC95800/C95500
توليد الطاقةجيد جدًاممتازممتازC95500
Miningجيدجيد جدًاممتازC95500

5.2 Service Condition Ratings

Service ConditionC95800C63200C95500Comments
High Pressure8/109/109/10All suitable
ارتفاع درجة الحرارة7/108/109/10C95500 best
Corrosive Media9/108/109/10C95800/C95500
ارتداء المقاومة8/107/108/10C95800/C95500

6. Manufacturing Considerations

6.1 Processing Parameters

معالجةC95800C63200C95500ملاحظات
Hot Working Temp (°C)760-870760-870760-870Similar ranges
Annealing Temp (°C)650-750650-750650-750Similar ranges
Stress Relief Temp (°C)350-400350-400350-400Similar ranges
تقييم الماكينة403538(% of C36000)

6.2 Welding Characteristics

Welding ProcessC95800C63200C95500Filler Metal
GTAWممتازجيد جدًاممتازERCuNiAl
GMAWجيد جدًاجيدجيد جدًاERCuNiAl
SMAWجيدجيدجيدECuNiAl

7. Selection Guidelines

7.1 Primary Selection Criteria

RequirementBest ChoiceSecond Choiceملاحظات
Highest StrengthC95500C95800For critical applications
Best Corrosion ResistanceC95800C95500Marine environments
Cost EffectivenessC63200C95500Standard applications
High Temperature UseC95500C63200Above 200°C

7.2 Application-Specific Recommendations

  1. التطبيقات البحرية
  • First choice: C95800 for best overall corrosion and erosion resistance
  • Alternative: C95500 when higher strength is required
  • Consider C63200 for cost-sensitive applications
  1. المعالجة الكيميائية
  • Primary choice: C95500 for high-temperature applications
  • Alternative: C95800 for superior corrosion resistance
  • C63200 suitable for less demanding conditions
  1. General Industrial Use
  • Standard choice: C63200 for good all-around properties
  • Upgrade to C95500 for higher stress applications
  • Consider C95800 when corrosion resistance is critical

خاتمة

Selection Priorities:

  1. Operating environment conditions
  2. Mechanical property requirements
  3. Temperature service conditions
  4. Manufacturing requirements
  5. Cost considerations

Grade Summary:

  • C95800: Optimal for marine and high-erosion environments
  • C95500: Best for high-strength and high-temperature applications
  • C63200: Cost-effective choice for general industrial use