ASTM B152 / B152M C12200 Copper Plates – DHP Copper (Cu-DHP, CW024A) Plate & Sheet
ASC LLP, Mumbai, supplies ASTM B152 / B152M C12200 copper plates and sheets in soft and hard tempers, from approved mills. In addition, every lot comes with a mill test certificate. For high-conductivity electrical copper, see our ASTM B152 C11000 plates.
What is ASTM B152 C12200?
ASTM B152 / B152M (ASME SB152) is the specification for copper sheet, strip, plate and rolled bar. Within it, C12200 is phosphorus-deoxidised copper with high residual phosphorus, known as DHP copper or Cu-DHP. It contains at least 99.9% copper together with 0.015–0.040% phosphorus.
The phosphorus removes oxygen from the copper. As a result, C12200 does not suffer hydrogen embrittlement when it is brazed, welded or annealed in reducing gas, whereas oxygen-bearing C11000 can crack. However, the phosphorus also lowers conductivity to about 85% IACS, so C12200 is chosen for fabrication rather than electrical conductors.
C12200 Copper Plate – Quick Facts
- Specification: ASTM B152 / B152M, ASME SB152, UNS C12200
- Composition: Cu (incl. Ag) 99.9% min, with P 0.015–0.040%
- Conductivity: about 85% IACS, while thermal conductivity is about 339 W/m·K
- Key feature: free from hydrogen embrittlement, so it brazes and welds well
- Equivalents: Cu-DHP, CW024A, JIS C1220
- Tempers: soft (annealed) to hard; in addition, hot-rolled plate
Key Properties of C12200 Copper Plates
- Brazeable and weldable: deoxidised copper, so joints stay sound when heated in reducing atmospheres.
- High thermal conductivity: about 339 W/m·K, which suits heat exchangers and cookware.
- Excellent formability: soft temper deep-draws and spins well; moreover, it work-hardens for strength.
- Corrosion resistance: good in water, atmosphere and many chemicals, similar to other coppers.
- Lower electrical conductivity: about 85% IACS; therefore, C11000 or C10100 is preferred for busbars.
Advantages of DHP Copper Plate
- Safe to braze: no hydrogen cracking, so brazed assemblies are reliable.
- Suits cladding: C12200 is used to clad steel, because it tolerates reducing-atmosphere annealing.
- Matches tube: similarly, it is the same copper as most plumbing and heat-exchanger tube.
- Recyclable: finally, copper scrap keeps its value and is fully recyclable.
C12200 Copper Plate & Sheet Sizes
| Form | Thickness (mm) | Typical size (mm) |
| Sheet | 0.5 – 5 | 1000 × 2000 or 1220 × 2440 |
| Plate | 5 – 50 | typically 1000 – 1500 × 2000 – 3000 |
| Heavy plate | 50 – 100 | as per mill range |
Sizes depend on the mill and temper; consequently, they are confirmed with each quotation. In addition, plates can be cut to size, as circles or as tube-sheet blanks.
C12200 Copper Plate Mechanical Properties by Temper
| Temper | Tensile (MPa) | Yield, nominal (MPa) | Elongation (%) |
| Soft (annealed) | 179 – 262 | 69 | 35 |
| H02 (½ hard) | 255 – 317 | 255 | 20 |
| H04 (hard) | 297 – 359 | 310 | 8 |
| H06 (extra hard) | 324 – 386 | 349 | 3 |
These are typical mill values; the certificate gives actual results. Note that harder tempers gain strength from cold rolling, whereas annealing returns the plate to the soft temper.
ASTM B152 C12200 Plate Specifications
| Item | Details |
| Specification | ASTM B152 / B152M; also ASME SB152 |
| Alloy | UNS C12200 (DHP copper) |
| Forms | Sheet, strip and plate, as well as rolled bar |
| Tempers | Hot rolled, annealed (soft), or cold rolled from ¼ hard to spring |
| Certificate | EN 10204 3.1; in addition, third-party inspection on request |
C12200 Equivalent Grades – Cu-DHP, CW024A
| Standard | Equivalent designation |
| UNS | C12200 |
| EN | CW024A (Cu-DHP) |
| JIS | C1220 |
| ASME | SB152 C12200 |
| Common names | DHP copper, as well as phosphorised copper |
Annealing, Brazing & Welding C12200
- Annealing: softens cold-worked plate; furthermore, reducing atmospheres can be used without embrittlement.
- Brazing: excellent, especially with silver or copper-phosphorus brazing alloys.
- Welding: TIG and MIG with deoxidised copper filler; however, thick sections need preheat because copper conducts heat away quickly.
- Forming: deep drawing, spinning and bending are easiest in the soft temper.
ASTM B152 C12200 Chemical Composition
| Element | C12200 (%) |
| Copper (Cu, incl. Ag) | 99.9 min |
| Phosphorus (P) | 0.015 – 0.040 |
Phosphorus is the only specified addition. By contrast, C11000 contains a little oxygen instead, while C10100 is oxygen-free with very high purity.
C12200 Physical Properties
| Property | Typical value |
| Density | 8.9 g/cm³ |
| Melting point | 1083 °C (1981 °F) |
| Electrical conductivity | 85% IACS approx. in the annealed state |
| Thermal conductivity | 339 W/m·K, typically at 20 °C |
| Elastic modulus | about 117 GPa |
| Thermal expansion | about 17.6 × 10⁻⁶ /K |
C12200 vs C11000 vs C10100
C11000 (ETP) offers about 100% IACS, so it is used for busbars; however, it can embrittle when brazed in hydrogen. C12200 gives up some conductivity in exchange for safe brazing and welding. Meanwhile, C10100 (OFE) combines high conductivity with no oxygen, but costs more.
Applications of ASTM B152 C12200 Copper Plates
| Industry | Typical C12200 plate use |
| Heat exchangers | Tube sheets, baffles and shells, because the plate brazes to copper tube |
| HVAC & refrigeration | Brazed headers and fabricated components |
| Chemical process | Vessels and linings, as well as clad steel equipment |
| Architecture | Roofing and cladding, as well as flashing |
| Consumer goods | Cookware and deep-drawn parts, for example emblems |
Why Buy C12200 Copper Plates from ASC LLP?
- Traceable material: mill test certificates with chemistry, temper and properties.
- Correct grade advice: help choosing C12200, C11000 or C10100, because conductivity and joining decide the grade.
- Cut to size: plates cut, sheared or supplied as circles.
- Export packing: finally, plates are interleaved and packed to protect the surface.
See also our C12200 copper flanges, copper seamless pipes, C70600 copper-nickel plates and C17200 beryllium copper plates, as well as the copper alloy plates and copper and copper alloys ranges.
Frequently Asked Questions – ASTM B152 C12200 Copper Plates
What is ASTM B152 C12200?
In short, it is phosphorus-deoxidised (DHP) copper plate, sheet or strip to ASTM B152, with at least 99.9% copper and 0.015–0.040% phosphorus.
What is the difference between C12200 and C11000?
C11000 has about 100% IACS conductivity but contains oxygen. C12200, by contrast, is deoxidised, so it can be brazed and welded without hydrogen embrittlement.
What is the conductivity of C12200 copper?
About 85% IACS electrical and about 339 W/m·K thermal conductivity in the annealed condition.
What is the equivalent of C12200?
Its equivalents are Cu-DHP, EN CW024A and JIS C1220.
Is C12200 good for busbars?
Not usually. Its lower conductivity means C11000 or C10100 is normally chosen for busbars and conductors.
What tempers are available in C12200 plate?
Soft (annealed), half hard (H02), hard (H04) and harder tempers, as well as hot-rolled plate.
Where is C12200 copper plate used?
Mainly in heat-exchanger tube sheets, brazed HVAC parts, process vessels, roofing and deep-drawn products.
Global Supply
ASC LLP supplies ASTM B152 C12200 copper plates and sheets from Mumbai to customers in India, the Middle East, Europe, Africa, the Americas and South-East Asia. To get a prompt quotation, simply send your enquiry with thickness, size, temper and quantity.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
