Copper Alloy TP2
GB TP2 · UNS C12200, C12000 · EN CR023A, Cu-DLP · JIS C1220, C1201
TP2 is a phosphorus-deoxidized copper (DHP, equivalent to C12200 and C1220) from the wrought pure-copper family, where residual phosphorus removes oxygen and eliminates hydrogen embrittlement during brazing and welding.
Reference datasheet — TP2 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the H58 condition
TP2 tempers and conditions
TP2 is supplied in 12 conditions, soft to hard. H58 is the default FabDigit quotes; the values on this page are for it.
Compare all 12 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Fully annealed coil tube and sheet for maximum ductility — ACR coils, flare fittings, deep drawing and spinning. | 70 | 225 | 45 | 42 HB | 85 % IACS |
As hot rolled | Mill-finish hot-worked plate, bar and busbar-size sections supplied without a final cold pass or anneal. | 75 | 220 | 40 | 45 HB | 85 % IACS |
Light annealed | Soft but fine-grained tube/strip for tight bending with a better surface and slightly higher strength than full anneal. | 90 | 235 | 42 | 48 HB | 85 % IACS |
1/8 hard | Barely work-hardened flat product for deep forming that still needs some spring and flatness. | 170 | 250 | 30 | 65 HB | 85 % IACS |
Light drawn | Lightly cold-drawn tube that still bends on a machine but is stiffer and straighter than annealed coil. | 190 | 255 | 28 | 70 HB | 85 % IACS |
Quarter hard | Quarter-hard strip for moderate bending and stamping of gaskets, washers and roofing sheet. | 205 | 265 | 25 | 75 HB | 85 % IACS |
H58Default Drawn general purpose | The default stocked condition: cold-drawn straight lengths of TP2 water/gas/medical-gas tube — rigid, pressure-rated, brazed rather than bent. | 250 | 290 | 18 | 85 HB | 84 % IACS |
Half hard | Half-hard plate and strip: the usual choice for flat gaskets, busbar and fabricated panels needing stiffness plus some bendability. | 250 | 295 | 14 | 88 HB | 84 % IACS |
Full hard | Hard-rolled flat and drawn rod product for flat springs, contacts and parts needing stiffness and wear resistance. | 280 | 320 | 7 | 95 HB | 84 % IACS |
Hard drawn | Maximum-strength drawn tube for high-pressure lines and structural/handrail use where no further bending is required. | 310 | 350 | 8 | 100 HB | 84 % IACS |
Extra hard | Extra-hard strip for flat springs, clips and shim stock where formability is no longer required. | 315 | 350 | 5 | 102 HB | 83 % IACS |
Spring hard | Maximum cold-worked strip/wire temper for spring contacts and formed clips; brittle to bend, softens if brazed. | 335 | 370 | 4 | 108 HB | 83 % IACS |
What is TP2?
TP2 is a phosphorus-deoxidized copper (DHP, equivalent to C12200 and C1220) from the wrought pure-copper family, where residual phosphorus removes oxygen and eliminates hydrogen embrittlement during brazing and welding. It is stocked mainly as tube, pipe, fittings and sheet for fluid and heat-transfer duty, with 339 W/m·K thermal conductivity and good cold formability (formability score 65). The residual phosphorus drops electrical conductivity to about 84 % IACS, so use C10200 or C11000 for conductors; machinability is low (score 25) and maximum service temperature is 175 °C. TP2 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,083°C (1,981 °F). TP2 has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 290 MPa (42.1 ksi) — stronger than 54% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 117 GPa (17 Msi).
What is TP2 used for?
- air-conditioning tube
- plumbing tube
- heat exchangers
- brazed fittings
Advantages
- Readily welded — 85/100, better than 95% of copper alloy grades
- Conducts heat well — 339 W/m·K (195.9 BTU/hr·ft·°F), better than 86% of copper alloy grades
- High electrical conductivity — 84 % IACS, better than 85% of copper alloy grades
- Forms and bends easily — 65/100, better than 78% of copper alloy grades
Limitations
- Limited service temperature — 175°C (347 °F), worse than 92% of copper alloy grades
- Difficult to machine — 25/100, worse than 86% of copper alloy grades
TP2 properties
Typical room-temperature values for TP2-H58; bars are the position among copper alloy grades.
Physical3
TP2 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,083°C (1,981 °F).
Mechanical13
TP2 has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 290 MPa (42.1 ksi) — stronger than 54% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
TP2 is rated for continuous service to 175°C (347 °F). It conducts heat at 339 W/m·K (195.9 BTU/hr·ft·°F), better than 86% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
TP2 conducts electricity at 84 % IACS, better than 85% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), better than 69% of copper alloy grades.
Sustainability4
Producing a kilogram of TP2 takes about 55 MJ of energy and emits 3.8 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 40%.
Manufacturability8
TP2's machinability is poor (25/100, worse than 86% of copper alloy grades); weldability excellent (85/100); formability good (65/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. TP2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with TP2
Is TP2 easy to machine?
Gummy and low-rated (~20 % of AISI 1212): use sharp positive-rake tools, high speed, generous cutting fluid and chip breaking; choose C14500 or free-cutting brass for screw-machine work.
Can TP2 be welded?
Phosphorus deoxidation means no hydrogen embrittlement — GTAW/GMAW with ERCu filler, preheat 200–400 °C for sections above ~3 mm; brazing with BCuP filler needs no flux on copper-to-copper joints.
Can TP2 be formed, bent or molded?
Excellent cold formability in O60 (bend, flare, expand, deep draw); intermediate anneals at 400–600 °C restore ductility after ~50 % reduction; hot working 750–950 °C.
TP2 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Presidual deoxidizer — sets the 80–90 % IACS conductivity | 0.02 – 0.04 | 0.03 |
| BiGB/T 5231 impurity limit | ≤ 0 | |
| PbGB/T 5231 impurity limit | ≤ 0.01 | |
| SbGB/T 5231 impurity limit | ≤ 0 | |
| FeGB/T 5231 impurity limit | ≤ 0.01 | |
| SGB/T 5231 impurity limit | ≤ 0.01 | |
| CuCu + Ag, phosphorus not counted as impurity | ≥ 99.9 (balance) |
What surface finishes work on TP2?
Polishes to a bright finish and takes tin, nickel or silver plating well; not anodizable — protect with lacquer or accept natural patina, and avoid ammonia-based cleaners.
Surface treatments FabDigit runs on copper alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Equivalent designations
Standards and trade names that resolve to Copper Alloy TP2 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
How much does TP2 cost?
TP2 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
TP2 — frequently asked
What is TP2 used for?
TP2 is typically used for air-conditioning tube, plumbing tube, heat exchangers and brazed fittings. In short: standard brazeable copper tube; no hydrogen embrittlement; lower conductivity than ETP.
What is the yield strength of TP2?
TP2 has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 290 MPa (42.1 ksi) — stronger than 54% of copper alloy grades. Strength varies by condition: see the 12 listed tempers.
Is TP2 easy to machine?
Not especially — machinability is rated poor (25/100, worse than 86% of copper alloy grades). Gummy and low-rated (~20 % of AISI 1212): use sharp positive-rake tools, high speed, generous cutting fluid and chip breaking; choose C14500 or free-cutting brass for screw-machine work.
Can TP2 be welded?
Yes — weldability is rated excellent (85/100). Phosphorus deoxidation means no hydrogen embrittlement — GTAW/GMAW with ERCu filler, preheat 200–400 °C for sections above ~3 mm; brazing with BCuP filler needs no flux on copper-to-copper joints.
What surface finishes work on TP2?
Polishes to a bright finish and takes tin, nickel or silver plating well; not anodizable — protect with lacquer or accept natural patina, and avoid ammonia-based cleaners.
Can TP2 be formed, bent or molded?
Excellent cold formability in O60 (bend, flare, expand, deep draw); intermediate anneals at 400–600 °C restore ductility after ~50 % reduction; hot working 750–950 °C.
What is the maximum service temperature of TP2?
TP2 is rated for continuous use to about 175°C (347 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between TP2-H58 and TP2-O60?
H58 is the default condition — the default stocked condition: cold-drawn straight lengths of TP2 water/gas/medical-gas tube — rigid, pressure-rated, brazed rather than bent. O60: fully annealed coil tube and sheet for maximum ductility — ACR coils, flare fittings, deep drawing and spinning. Yield strength is 250 MPa in H58 versus 70 MPa in O60.
How much does TP2 cost?
TP2 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM B88 / B75 / B280 — seamless copper water, general and ACR tube — ASTM International (2022)
- JIS H3300 C1220 copper tube — JSA (2018)
- C12200 alloy datasheet (DHP copper) — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties of Copper and Copper Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.