May 19, 2025 Leave a message

what is the C12200 DHP Copper Alloy Tube

1. what is the ASTM grade of C12200 DHP Copper Alloy Tube?

ASTM Specification: ASTM B88 (Standard Specification for Seamless Copper Water Tube).

UNS Designation: C12200 (copper with ~0.04–0.30% phosphorus, deoxidized with phosphorus).

 

2. What are the mechanical properties of C12200 DHP Copper Alloy Tube?

Property Typical Values (Annealed Condition)
Tensile Strength 205–275 MPa (30,000–40,000 psi)
Yield Strength (0.2% Offset) 70–105 MPa (10,000–15,000 psi)
Elongation at Break 30–40% (in 50 mm gauge length)
Hardness (Rockwell B) 35–60 HRB
Density ~8.94 g/cm³
Electrical Conductivity ~20% IACS (lower than pure copper due to phosphorus addition)

 

3. What is the chemical composition of C12200 DHP Copper Alloy Tube?

Element Weight Percentage (%)
Copper (Cu) ≥99.6%
Phosphorus (P) 0.04–0.30%
Oxygen (O) ≤0.001% (low due to deoxidation)
Impurities ≤0.3% (e.g., iron, zinc, lead)

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4. What is the application of C12200 DHP Copper Alloy Tube?

Corrosion Resistance:

Plumbing systems (potable water, heating, and cooling lines).

Condensers, heat exchangers, and evaporators in HVAC systems.

Industrial piping for non-aggressive fluids (e.g., oils, gases).

Formability:

Tubing that requires bending, flaring, or joining (e.g., refrigeration lines).

Low Oxygen Content:

Applications where hydrogen embrittlement is a concern (e.g., welding or high-temperature service).

 

5. What are the advantages of C12200 DHP Copper Alloy Tube?

Excellent Corrosion Resistance:

Resistant to water, steam, and many non-acidic environments, making it ideal for plumbing and industrial fluids.

Deoxidized for Reliable Fabrication:

Phosphorus addition removes oxygen, preventing "hydrogen embrittlement" during welding or brazing (critical for tubing used in high-temperature or pressure applications).

Good Formability and Ductility:

Easily bent, flared, or swaged without cracking, suitable for complex piping layouts.

High Thermal Conductivity:

Moderate thermal conductivity (lower than pure copper but still useful for heat transfer in non-critical applications).

Biostatic Properties:

Natural resistance to microbial growth, making it suitable for potable water systems.

Longevity and Durability:

Resistant to biofouling and scaling, ensuring long service life in corrosive environments.

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