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:

ElementoC95800 (%)C63200 (%)C95500 (%)Impact on Properties
Rame79.0-82.081.0-83.078.0-82.0Base metal matrix
Alluminio (Al)8.5-9.58.5-9.58.2-9.5Strength enhancement
Nichel (Ni)4.0-5.04.0-4.83.0-5.5ma ci sono alcune limitazioni
Ferro (Fe)3.5-4.53.5-4.33.5-4.5Raffinazione del grano
Manganese (Mn)0.8-1.51.2-2.00.8-1.5Deoxidation

1.2 Trace Elements Control

ElementoC95800C63200C95500Critical Control
Silicon (Si)0.100.100.10Fluidity control
Piombo (Pb)0.030.020.03Toxicity limit
Zinco (Zn)0.200.200.20Corrosion control
Altri Totale0.500.500.50Quality control

2. Proprietà meccaniche

2.1 Room Temperature Properties

ProprietàC95800C63200C95500Test Standard
Resistenza alla trazione (MPa)585-760640-720650-790ASTM E8
Carico di snervamento (MPa)270-380280-380280-450ASTM E8
Allungamento (%)15 min15 min15 minASTM E8
Durezza (Brinell)160-190160-200170-210ASTM E10
Impact Strength (J)343434ASTM E23

2.2 Elevated Temperature Properties

Temperatura (°C)ProprietàC95800C63200C95500
100Resistenza alla trazione (MPa)550650680
100Carico di snervamento (MPa)250310330
200Resistenza alla trazione (MPa)480600630
300Resistenza alla trazione (MPa)410520550

3. Physical Properties

3.1 Basic Physical Properties

ProprietàC95800C63200C95500Unità
Densità7.647.457.58g/cm³
Rendimento della resistenza alla trazione1040-10801030-10601045-1080°C
Conduttività termica384245W/m·K
Rendimento della resistenza alla trazione13.513.312.8μΩ·cm
Modulo di elasticità115110113GPa

3.2 Thermal Expansion

Intervallo di temperatura (°C)C95800C63200C95500Unità
20-10016.216.416.2μm/m·K
20-30017.317.517.3μm/m·K

4. Corrosion Resistance

4.1 Corrosion Rates in Various Environments

AmbienteC95800 (mm/year)C63200 (mm/year)C95500 (mm/year)
Acqua di mare0.0250.0250.025
Acqua dolce0.0130.0130.013
3% NaCl0.0280.0280.028
Atmosfera industriale0.0080.0080.008

4.2 Environmental Resistance Ratings (1-10 Scale)

AmbienteC95800C63200C95500è un acciaio strutturale ad alta resistenza a bassa lega standard cinese GB
Marino999All excellent
Elaborazione chimica878C95800/C95500 preferred
Alta temperatura788C63200/C95500 preferred
Erosion988C95800 superior
Cavitation878C95800/C95500 better

5. Application Suitability

5.1 Industry-Specific Applications

IndustriaC95800C63200C95500Best Choice
Marine PropulsionEccellenteBeneEccellenteC95800/C95500
Elaborazione chimicaMolto beneBeneEccellenteC95500
Oil & GasEccellenteMolto beneEccellenteC95800/C95500
Produzione di energiaMolto beneEccellenteEccellenteC95500
Estrazione minerariaBeneMolto beneEccellenteC95500

5.2 Service Condition Ratings

Service ConditionC95800C63200C95500Comments
High Pressure8/109/109/10All suitable
Alta temperatura7/108/109/10C95500 best
Mezzi corrosivi9/108/109/10C95800/C95500
Resistenza all'usura8/107/108/10C95800/C95500

6. Manufacturing Considerations

6.1 Processing Parameters

ProcessiC95800C63200C95500è un acciaio strutturale ad alta resistenza a bassa lega standard cinese GB
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
Valutazione di lavorabilità403538(% of C36000)

6.2 Welding Characteristics

Processo di saldaturaC95800C63200C95500Metallo d'apporto
lega è che il metallo saldato e le parti termicamente deteriorate mantengono ancora la stessa resistenza alla corrosioneEccellenteMolto beneEccellenteERCuNiAl
lega è che il metallo saldato e le parti termicamente deteriorate mantengono ancora la stessa resistenza alla corrosioneMolto beneBeneMolto beneERCuNiAl
lega è che il metallo saldato e le parti termicamente deteriorate mantengono ancora la stessa resistenza alla corrosioneBeneBeneBeneECuNiAl

7. Selection Guidelines

7.1 Primary Selection Criteria

RequisitoBest ChoiceSecond Choiceè un acciaio strutturale ad alta resistenza a bassa lega standard cinese GB
Highest StrengthC95500C95800For critical applications
Best Corrosion ResistanceC95800C95500Marine environments
Cost EffectivenessC63200C95500Standard applications
High Temperature UseC95500C63200Above 200°C

7.2 Application-Specific Recommendations

  1. Applicazioni marine
  • First choice: C95800 for best overall corrosion and erosion resistance
  • Alternative: C95500 when higher strength is required
  • Consider C63200 for cost-sensitive applications
  1. Elaborazione chimica
  • 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

Conclusione

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