Copper Tube, Copper Pipe and Tube TP2 C12200 Tube, JIS H3300 C1220T Tube

Phosphorus-Deoxidized copper tubes – C12200 – are extensively used in sugar refineries for condensers and evaporators. Deoxidized copper is the standard material for transferring heat from steam to water or air because of their excellent resistance to corrosion by fresh water and their high thermal conductivities.

* Note: The information provided above includes typical values which are only for general reference. These values are not intended for exact specification, design or engineering purposes.

Standard Specification for Seamless Copper Tube

This specification establishes the requirements for seamless round, rectangular, and square copper tube (UNS Nos. C10100, C10200, C10300, C10800, C12000, and C12200) suitable for general engineering applications.

The material of manufacture shall be billets, cast bars, or tube. The tube shall be manufactured by hot- and cold-working processes, shall be cold drawn to the finished size and wall thickness, and shall be supplied in cold-drawn or annealed temper condition.

The material shall conform to the chemical composition requirements prescribed for copper, phosphorus, and arsenic, as determined by chemical analysis, and to the mechanical property requirements including tensile strength, yield strength, Rockwell hardness, and straightening.

Requirements for grain size, electrical mass resistivity, and dimensions are specified.

The following test methods are detailed:

Grain size

Electrical resistivity

Tensile and yield strength

Hardness tests

Expansion test for round table

Microscopical examination

Test for hydrogen embrittlement

Nondestructive tests such as electromagnetic (eddy-current), hydrostatic, and pneumatic pressure tests

Tubes made from any of the following Copper UNS No. designations shall be supplied unless otherwise specified in the contract or purchase order:

Q1: What does "TP2" mean? Is it the same as C12200?
A: Yes, TP2 is the Chinese designation for C12200. TP2 is a grade defined under the Chinese standard GB/T 17791 for air conditioning and refrigeration copper tubes. It is a phosphorus-deoxidized copper with 99.9% minimum copper and 0.015-0.040% phosphorus – chemically identical to ASTM C12200. TP2 is widely used in HVAC applications in the Asian market.

Q2: What is the difference between ASTM B75 and ASTM B111 for C12200 tubes?
A: ASTM B75 is for general engineering applications – plumbing, general piping, and mechanical uses. ASTM B111 is specifically for condensers and heat exchangers – it has stricter dimensional tolerances, specific temper requirements for tube expansion, and additional testing requirements (eddy current, hydrostatic). For heat exchanger service, always specify ASTM B111.

Q3: Can TP2/C12200 tubes be used for seawater cooling?
A: Not recommended. C12200 (pure copper with phosphorus) has good corrosion resistance in freshwater and steam condensate, but in seawater, it is susceptible to pitting and erosion-corrosion, especially at flow velocities above 1.5 m/s. For seawater, select C70600 (90/10 copper-nickel) or C71500 (70/30 copper-nickel) .

Q4: What is the hydrogen embrittlement test mentioned in ASTM B75?
A: The hydrogen embrittlement test is required for oxygen-free coppers (C10100, C10200, etc.) but is also relevant for C12200. The test detects the presence of oxygen that could react with hydrogen in reducing atmospheres (like brazing/welding), causing internal cracking. C12200, being deoxidized, has good resistance to hydrogen embrittlement – this is a key advantage over C11000 (ETP copper).

Q5: What temper should I order for bending into U-tubes?
A: You must order O61 (annealed) temper. The H55 (light drawn) and H80 (hard drawn) tempers have higher strength but reduced ductility and are likely to crack during U-bending. The mechanical properties table shows tensile strength ranges – annealed tubes are at the lower end of the 221-379 MPa range, providing maximum formability.

Q6: Is ASTM B75 C12200 suitable for potable water systems?
A: Yes. C12200 is widely used for plumbing and potable water systems. It meets the requirements of NSF/ANSI 61 for drinking water system components and has excellent corrosion resistance to freshwater. However, always confirm with your local plumbing codes.

Q7: What is the thermal conductivity of C12200 compared to other heat exchanger materials?
A: C12200 has excellent thermal conductivity at 339 W/m-K (196 BTU/ft²/ft/h/°F). For comparison:

Admiralty brass (C44300): ~111 W/m-K

90/10 Copper-nickel (C70600): ~45 W/m-K

316 Stainless Steel: ~16 W/m-K

Titanium Grade 2: ~17 W/m-K

This makes C12200 a top choice when maximum heat transfer is the priority and corrosion conditions are mild.

Q8: What is the difference between JIS H3300 C1220T and ASTM B111 C12200?
A: C1220T is the JIS equivalent of ASTM C12200. The chemical composition is essentially the same (Cu ≥ 99.9%, P 0.015-0.040%). The key differences are in:

Temper designations (JIS uses O, 1/2H, H; ASTM uses O61, H55, H80)

Dimensional tolerances (JIS offers "Ordinary Class" and "Special Class"; ASTM has its own tolerance tables)

Grain size requirements (both have similar ranges for annealed tempers)

For most heat exchanger applications, they are interchangeable, but always confirm which standard is specified in your project documents.

Q9: What non-destructive testing (NDT) is required for ASTM B111 C12200 tubes?
A: ASTM B111 requires eddy current testing (ET) per ASTM E243 as the primary NDT method. Additional tests may include:

Hydrostatic testing (minimum 7000 psi fiber stress, not exceeding 1000 psi unless specified)

Pneumatic testing (by agreement)

Ultrasonic testing (UT) (by agreement)

Always request the mill test certificate confirming which NDT methods were applied.

Q10: Is C12200 suitable for high-temperature applications?
A: Yes, within limits. C12200 maintains good mechanical properties up to approximately 200°C (400°F) . Above this temperature, creep and oxidation become concerns. The melting point is 1083°C (1981°F), but for continuous service, keep temperatures below 200-250°C. For higher temperature applications (300-400°C), consider nickel alloys or specify the HR50 (drawn, stress-relieved) temper for better creep resistance.

Poor packaging destroys even the best copper heat exchanger tube. As a professional copper heat exchanger tube factory serving copper heat exchanger tube USA, Europe, UAE, Saudi Arabia, and India, we follow military-grade export packaging standards to ensure zero damage during sea or air freight.

Our Standard Packaging Process:

For U-Bundle Orders: U tube heat exchanger and U tube bundle heat exchanger are placed in dedicated steel jigs inside the crate to prevent bending radius distortion.

Our Certifications & Compliance:

ASTM B111 pdf and ASME SB111 pdf full traceability.

ISO 9001:2015 quality management system.

Third-party inspection accepted: SGS, BV, Lloyds, or TUV.

Copper heat exchanger tube life expectancy testing reports available upon request.

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