C63200 Nickel Aluminum Bronze Tubes: Comprehensive Technical Analysis and Performance Characteristics

1. Introduction to C63200 Alloy

C63200 nickel aluminum bronze is a high-strength copper-based alloy known for its exceptional mechanical properties and corrosion resistance. This analysis provides detailed information about its characteristics, specifications, and applications.

2. Chemical Composition

The precise chemical composition according to ASTM standards:

Element	Composition Range (%)	Optimal Range (%)
Copper (Cu)	81.0 – 83.0	82.0
Aluminum (Al)	8.5 – 9.5	9.0
Nickel (Ni)	4.0 – 4.8	4.5
Iron (Fe)	3.5 – 4.3	4.0
Manganese (Mn)	1.2 – 2.0	1.5
Silicon (Si)	0.10 max	0.05
Lead (Pb)	0.02 max	0.01
Zinc (Zn)	0.20 max	0.10

3. Mechanical Properties

3.1 Standard Mechanical Properties at Room Temperature

Property	Metric Units	Imperial Units
Ultimate Tensile Strength	640-720 MPa	93-104 ksi
Yield Strength (0.2% offset)	280-380 MPa	41-55 ksi
Elongation in 50mm	15% min	15% min
Reduction in Area	20% min	20% min
Hardness (Brinell)	160-200 HB	160-200 HB
Impact Strength (Charpy V-notch)	34 J	25 ft-lb

3.2 Temperature-Dependent Properties

Temperature (°C)	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
-196	850	420	12
20	680	330	15
100	650	310	16
200	600	280	18
300	520	250	20
400	400	200	25

4. Physical Properties

Property	Value	Units
Density	7.45	g/cm³
Melting Range	1030-1060	°C
Specific Heat	0.377	kJ/kg·K
Thermal Conductivity	42	W/m·K
Electrical Resistivity	13.3	μΩ·cm
Modulus of Elasticity	110	GPa
Poisson’s Ratio	0.33	–
Magnetic Permeability	1.05	–

5. Dimensional Specifications

5.1 Standard Tube Sizes

Nominal OD (mm)	Wall Thickness Range (mm)	Standard Lengths (m)
12.7 – 25.4	1.2 – 3.2	3, 6
31.8 – 50.8	1.6 – 4.8	3, 6
63.5 – 101.6	2.1 – 6.4	3, 6
114.3 – 219.1	3.2 – 12.7	3, 6
273.0 – 406.4	4.8 – 19.1	3, 6

5.2 Tolerances

Dimension	Tolerance Range
Outside Diameter	±0.25mm up to 50mm OD
Wall Thickness	±10%
Length	+3mm, -0mm
Straightness	1.5mm per meter
Ovality	1% of OD max

6. Corrosion Resistance Properties

6.1 Corrosion Rates in Different Environments

Environment	Temperature (°C)	Corrosion Rate (mm/year)
Seawater	20	0.025
Fresh Water	20	0.013
3% NaCl Solution	20	0.028
10% H₂SO₄	20	0.15
10% HCl	20	0.22
Industrial Atmosphere	20	0.008

6.2 Environmental Resistance Ratings

Environment	Rating (1-10)	Notes
Marine	9	Excellent resistance
Industrial	8	Very good resistance
Chemical Processing	7	Good for most applications
High Temperature	8	Maintains properties well
Wear Resistance	8	Superior to standard bronzes
Stress Corrosion	9	Highly resistant

7. Manufacturing and Processing

7.1 Fabrication Parameters

Process	Recommended Parameters
Hot Working Temperature	760-870°C
Annealing Temperature	650-750°C
Stress Relief Temperature	350-400°C
Maximum Operating Temperature	315°C

7.2 Welding Specifications

Welding Process	Recommended Parameters	Filler Metal
GTAW	DC Straight Polarity	ERCuNiAl
GMAW	DC Reverse Polarity	ERCuNiAl
SMAW	DC Reverse Polarity	ECuNiAl

8. Quality Control Requirements

8.1 Testing Requirements

Test Type	Standard	Frequency
Chemical Analysis	ASTM E478	Per Heat
Tensile Testing	ASTM E8	Per Lot
Hardness Testing	ASTM E10	Per Lot
Ultrasonic Testing	ASTM E213	100%
Hydrostatic Testing	ASTM E498	100%

8.2 Surface Finish Requirements

Surface Condition	Roughness (Ra)	Application
Standard Finish	3.2 μm	General Purpose
Smooth Finish	1.6 μm	Hydraulic Applications
Polished Finish	0.8 μm	Critical Flow Service
Mirror Finish	0.4 μm	Special Applications

9. Applications and Industry Standards

9.1 Industry-Specific Applications

Industry	Applications	Key Requirements
Marine	Propeller Shafts, Pump Housings	Corrosion Resistance
Oil & Gas	Valve Bodies, Bearings	Strength, Wear Resistance
Chemical Processing	Heat Exchangers, Reactors	Chemical Resistance
Power Generation	Pump Components, Fittings	Reliability, Durability
Mining	Wear Plates, Bushings	Abrasion Resistance

9.2 Applicable Standards

Standard	Description	Scope
ASTM B150	Standard Specification	Material Requirements
ASTM B271	Seamless Tubes	Manufacturing
NACE MR0175	Sour Service	Oil & Gas Applications
ISO 9001	Quality Management	Process Control
DNV-GL	Marine Certification	Maritime Applications

10. Economic Considerations

10.1 Cost Factors

Factor	Impact Level	Consideration
Raw Material Cost	High	Market-dependent
Processing Cost	Medium	Complex manufacturing
Installation Cost	Low	Standard procedures
Maintenance Cost	Low	Long service life
Life Cycle Cost	Favorable	Extended durability

This comprehensive analysis provides essential information for engineers, procurement specialists, and technical professionals working with C63200 nickel aluminum bronze tubes. The data presented should be verified for specific applications and operating conditions.