Copper Alloy TP2-O60
Temper
GB TP2 · UNS C12200, C12000 · EN CR023A, Cu-DLP · JIS C1220, C1201
O60 = soft annealed
Fully annealed coil tube and sheet for maximum ductility — ACR coils, flare fittings, deep drawing and spinning.
Values for the O60 condition
Other TP2 tempers and conditions
TP2 is listed in 12 conditions; see the grade overview at TP2.
Compare all 12 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
O60This page 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-O60?
TP2-O60 is TP2 in the O60 temper — fully annealed coil tube and sheet for maximum ductility — ACR coils, flare fittings, deep drawing and spinning. TP2-O60 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 225 MPa (32.6 ksi) — weaker than 93% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 117 GPa (17 Msi). TP2-O60 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). H58 is the default condition FabDigit quotes; O60 is available on request or by drawing note.
Advantages
- Forms and bends easily — 98/100, better than 99% of copper alloy grades
- Readily welded — 85/100, better than 95% of copper alloy grades
- Ductile — tolerates forming and impact — 45%, better than 91% 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 — 85 % IACS, better than 86% of copper alloy grades
Limitations
- Difficult to machine — 18/100, worse than 100% of copper alloy grades
- Low strength — 70 MPa (10.2 ksi), worse than 93% of copper alloy grades
TP2-O60 properties
Typical room-temperature values for TP2-O60; 13 are specific to this condition. Other listed values are TP2 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
TP2-O60 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-O60 has a yield strength of 70 MPa (10.2 ksi) and a tensile strength of 225 MPa (32.6 ksi) — weaker than 93% of copper alloy grades. Elongation at break is 45% and the elastic modulus is 117 GPa (17 Msi).
Thermal6
TP2-O60 is rated for continuous service to 200°C (392 °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-O60 conducts electricity at 85 % IACS, better than 86% 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-O60 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-O60's machinability is poor (18/100, worse than 100% of copper alloy grades); weldability excellent (85/100); formability excellent (98/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with TP2-O60
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.
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.
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) | — |
TP2-O60 — frequently asked
What is TP2-O60 used for?
TP2-O60 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-O60?
TP2-O60 has a typical yield strength of 70 MPa (10.2 ksi) and a tensile strength of 225 MPa (32.6 ksi) — weaker than 93% of copper alloy grades. Strength varies by condition: see the 12 listed tempers.
Is TP2-O60 easy to machine?
Not especially — machinability is rated poor (18/100, worse than 100% 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-O60 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-O60?
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-O60 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-O60?
TP2-O60 is rated for continuous use to about 200°C (392 °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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.