What is C12000 copper?
Pure copper has high electrical and thermal conductivity. Alloys can be freely formed by copper. UNS C12000 copper has 95% IACS conductivity, low residual phosphorus, and high embrittlement resistance. It is available in the form of rod, tube, and wire.
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UNS C12000 Copper Tube Chemical Composition
The chemical composition of UNS C12000 copper is outlined in the following table.
|
Element |
Content (%) |
|
Cu |
99.9 |
|
P |
0.008 |
UNS C12000 Copper Tube Physical Properties
The physical properties of UNS C12000 copper are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
8.89 g/cm3 |
0.321 lb/in3 |
|
Melting point |
1083°C |
1981°F |
UNS C12000 Copper Tube Mechanical Properties
The following table shows mechanical properties of UNS C12000 copper.
|
Properties |
Metric |
Imperial |
|
Tensile strength, ultimate |
221 - 393 MPa |
32100 - 57000 psi |
|
Tensile strength, yield (depending on temper) |
69.0 - 365 MPa |
10000 - 52900 psi |
|
Elongation at break ( in 101.6 mm (4 in.)) |
55% |
55% |
|
Machinability (UNS C36000 (free-cutting brass) = 100%) |
20% |
20% |
|
Poisson's ratio |
0.34 |
0.34 |
|
Elastic modulus |
117 GPa |
16970 ksi |
UNS C12000 Copper Tube Other Designations
Other designations that are equivalent to UNS C12000 copper are listed in the following table.
|
ASME SB111 |
ASTM B152 |
ASTM B359 |
ASTM B506 |
ASTM B716 |
|
ASME SB133 |
ASTM B187 |
ASTM B372 |
ASTM B623 |
ASTM B743 |
|
ASME SB359 |
ASTM B188 |
ASTM B395 |
ASTM B638 |
ASTM B75 |
|
ASME SB395 |
ASTM B224 |
ASTM B42 |
ASTM B640 |
ASTM B88 |
|
ASME SB42 |
ASTM B272 |
ASTM B442 |
ASTM B641 |
MIL B-18907 |
|
ASME SB75 |
ASTM B280 |
ASTM B447 |
ASTM B68 |
MIL B-20292 |
|
ASTM B111 |
ASTM B302 |
ASTM B451 |
ASTM B687 |
MIL T-24107 |
|
ASTM B133 |
ASTM B306 |
ASTM B5 |
ASTM B698 |
MIL T-3235 |
|
SAE J463 |
MIL W-85 |
SAE J461 |
FAQ
Q: What's the maximum continuous service temperature for C12000?
A: Typically up to about 150–200°C (302–392°F) for long-term service. Short-term exposure can go higher, but annealing and softening will occur above ~250°C (482°F).
Q: How should C12000 tubes be stored to prevent oxidation?
A: Store in a dry, covered area. For long-term storage or in humid climates, sealed plastic wrapping or nitrogen purging is recommended to prevent surface tarnishing.
Q: Can C12000 be bent easily?
A: Yes, especially in the annealed temper. For hard temper tubes, bending may require a mechanical bender to avoid kinking or cracking.
Q: What is the difference between TP1 (C12000) and TP2 (C12200) copper?
A: TP1 (C12000) and TP2 (C12200) are both phosphorus-deoxidized coppers, but they differ in residual phosphorus content: TP1 (C12000): Low residual phosphorus (0.004–0.012%). Designed for applications requiring high conductivity and good weldability, such as heat exchangers and electrical components. TP2 (C12200): Higher phosphorus content (0.015–0.040%). Offers improved weldability and brazability due to better deoxidation, but has slightly lower electrical conductivity (~80% IACS). Commonly used in plumbing, HVAC, and piping systems where welding/brazing is critical. Key takeaway: TP1 prioritizes conductivity, while TP2 prioritizes weldability and brazing performance.
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Dimensional Range Table
In plumbing and HVAC standards, copper tubing is commonly classified into three main types based on wall thickness: Type K, Type L, and Type M.
Type K: Has the thickest wall. It is the strongest and most durable, primarily used for underground burial, high-pressure applications, and where the highest level of protection is required.
Type L: Has a medium wall thickness. It is the most common and versatile type, widely used for residential and commercial water supply lines (hot and cold) and for many HVAC applications.
Type M: Has the thinnest wall. It is suitable for above-ground, low-pressure residential water supply lines and some drainage applications, offering a cost-effective solution where conditions allow.
The outside diameter (OD) is the same for all three types within a given nominal size. The difference lies in the inner diameter (ID), which decreases as the wall gets thicker.
| Nominal Size (inches) | Type K | Type L | Type M |
|---|---|---|---|
| Outside Diameter (OD) | Same for all types | ||
| Wall Thickness | Thickest | Medium | Thinnest |
| Inside Diameter (ID) | Smallest | Medium | Largest |
| 1/2" | OD: 0.625" ID: 0.527" Wall: 0.049" |
OD: 0.625" ID: 0.545" Wall: 0.040" |
OD: 0.625" ID: 0.569" Wall: 0.028" |
| 3/4" | OD: 0.875" ID: 0.745" Wall: 0.065" |
OD: 0.875" ID: 0.785" Wall: 0.045" |
OD: 0.875" ID: 0.811" Wall: 0.032" |
| 1" | OD: 1.125" ID: 0.995" Wall: 0.065" |
OD: 1.125" ID: 1.025" Wall: 0.050" |
OD: 1.125" ID: 1.055" Wall: 0.035" |
Our factory
We provide a full range of copper products-rods, tubes, plates, bars, wires, and strips-tailored to international specifications including ASTM, BS, and JIS. Our manufacturing capabilities feature horizontal continuous casting for large-diameter bars, rotary piercing mills for high-precision tubes, and multi-roll finishing mills for ultra-thin strips. To ensure superior quality, we implement comprehensive testing protocols: chemical analysis via XRF, mechanical property verification on universal testing machines, and non-destructive testing (ultrasonic and eddy current) for internal and surface integrity. With integrated production, rigorous inspection, and flexible customization, we deliver high-performance copper materials for electrical, HVAC, machinery, and construction industries worldwide.
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