Copper Alloy TP1-H04
Supply condition
GB TP1 · UNS C12000, C12200 · EN CR024A, Cu-DHP · JIS C1220
H04 = full hard
Flat product where strength and flatness matter more than bendability (busbar covers, gaskets, roofing strip).
Values for the H04 condition
Other TP1 tempers and conditions
TP1 is listed in 9 conditions; see the grade overview at TP1.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Choose for coiled ACR/refrigeration tube, severe bending, flaring, expansion and deep-drawn parts. | 70 | 220 | 48 | 45 HB | 93 % IACS |
Light anneal | Use when soft-temper formability is needed but with a little more stiffness for handling and straightness. | 105 | 240 | 40 | 55 HB | 93 % IACS |
Quarter hard | Sheet/strip for moderate forming with better handling stiffness than annealed. | 175 | 250 | 30 | 70 HB | 92 % IACS |
Light drawn tube | Straight-length tube that still needs moderate bending or expansion on site. | 205 | 255 | 25 | 72 HB | 92 % IACS |
H58Default Drawn general purpose | Default stocked condition for straight water/gas/ACR tube: good strength with enough ductility for cold bending on a former. | 235 | 285 | 18 | 85 HB | 92 % IACS |
Half hard | General-purpose strip temper for stamped and bent components needing moderate strength. | 245 | 285 | 14 | 87 HB | 92 % IACS |
Hard drawn | Pick for maximum pressure rating / rigidity in straight runs where no site bending is required. | 300 | 330 | 10 | 100 HB | 91 % IACS |
H04This page Full hard | Flat product where strength and flatness matter more than bendability (busbar covers, gaskets, roofing strip). | 300 | 325 | 6 | 100 HB | 91 % IACS |
Spring hard | Maximum cold-worked strength strip for springy clips and shims; essentially no formability left. | 330 | 360 | 4 | 110 HB | 91 % IACS |
What is TP1-H04?
TP1-H04 is TP1 supplied in the H04 condition — flat product where strength and flatness matter more than bendability (busbar covers, gaskets, roofing strip). TP1-H04 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 325 MPa (47.1 ksi) — stronger than 61% of copper alloy grades. Elongation at break is 6% and the elastic modulus is 120 GPa (17.4 Msi). TP1-H04 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F). H58 is the default condition FabDigit quotes; H04 is available on request or by drawing note.
Advantages
- Readily welded — 90/100, better than 98% of copper alloy grades
- High electrical conductivity — 91 % IACS, better than 88% of copper alloy grades
- Conducts heat well — 347 W/m·K (200.5 BTU/hr·ft·°F), better than 87% of copper alloy grades
Limitations
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
- Limited ductility — 6%, worse than 89% of copper alloy grades
TP1-H04 properties
Typical room-temperature values for TP1-H04; 20 are specific to this condition. Other listed values are TP1 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
TP1-H04 has a density of 8.94 g/cm³ (0.323 lb/in³), heavier than 90% of copper alloy grades. It melts at 1,065°C (1,949 °F).
Mechanical11
TP1-H04 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 325 MPa (47.1 ksi) — stronger than 61% of copper alloy grades. Elongation at break is 6% and the elastic modulus is 120 GPa (17.4 Msi).
Thermal6
TP1-H04 is rated for continuous service to 150°C (302 °F). It conducts heat at 347 W/m·K (200.5 BTU/hr·ft·°F), better than 87% of copper alloy grades. Thermal expansion is 17.6 µm/m·K (9.78 µin/in·°F).
Electrical3
TP1-H04 conducts electricity at 91 % IACS, better than 88% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of TP1-H04 takes about 57 MJ of energy and emits 3.4 kg of CO₂ — less than 52% of copper alloy grades. Typical recycled content is 30%.
Manufacturability7
TP1-H04's machinability is fair (40/100, better than 57% of copper alloy grades); weldability excellent (90/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with TP1-H04
Is TP1 easy to machine?
Gummy with long stringy chips — use sharp, high-rake, polished-flute tools, high speed with generous coolant; rating ~20 % of AISI 1212, choose C14500/C36000 if heavy machining is required.
Can TP1 be welded?
Phosphorus deoxidation gives freedom from hydrogen embrittlement, so GTAW/GMAW, oxy-fuel, capillary brazing (BCuP/BAg) and soft soldering are all straightforward; preheat 200–500 °C on thick sections due to high heat conduction.
Can TP1 be formed, bent or molded?
Excellent cold formability in O60 (bending, flaring, expansion, deep drawing); interanneal at 400–600 °C when cold work exceeds ~60 %, and remember drawn tempers soften above ~150 °C.
What surface finishes work on TP1?
Not anodisable — bright-dip/pickle, mechanical polish for a bright finish, or tin/nickel plate and lacquer to stop tarnish; natural patina is acceptable outdoors.
TP1 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 deoxidiser — low-P (DLP) level | 0 – 0.01 | 0.01 |
| Biimpurity limit, GB/T 5231 | ≤ 0 | — |
| Pbimpurity limit | ≤ 0.01 | — |
| Sbimpurity limit | ≤ 0 | — |
| Asimpurity limit | ≤ 0 | — |
| Feimpurity limit | ≤ 0.01 | — |
| Niimpurity limit | ≤ 0.01 | — |
| Simpurity limit | ≤ 0.01 | — |
| Znimpurity limit | ≤ 0.01 | — |
| Snimpurity limit | ≤ 0 | — |
| CuCu + Ag, including phosphorus | ≥ 99.9 (balance) | — |
TP1-H04 — frequently asked
What is TP1-H04 used for?
TP1-H04 is typically used for water tube, refrigeration tube and brazed assemblies. In short: best brazing copper tube; no hydrogen embrittlement; lower conductivity than ETP.
What is the yield strength of TP1-H04?
TP1-H04 has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 325 MPa (47.1 ksi) — stronger than 61% of copper alloy grades. Strength varies by condition: see the 9 listed tempers.
Is TP1-H04 easy to machine?
Not especially — machinability is rated fair (40/100, better than 57% of copper alloy grades). Gummy with long stringy chips — use sharp, high-rake, polished-flute tools, high speed with generous coolant; rating ~20 % of AISI 1212, choose C14500/C36000 if heavy machining is required.
Can TP1-H04 be welded?
Yes — weldability is rated excellent (90/100). Phosphorus deoxidation gives freedom from hydrogen embrittlement, so GTAW/GMAW, oxy-fuel, capillary brazing (BCuP/BAg) and soft soldering are all straightforward; preheat 200–500 °C on thick sections due to high heat conduction.
What surface finishes work on TP1-H04?
Not anodisable — bright-dip/pickle, mechanical polish for a bright finish, or tin/nickel plate and lacquer to stop tarnish; natural patina is acceptable outdoors.
Can TP1-H04 be formed, bent or molded?
Excellent cold formability in O60 (bending, flaring, expansion, deep drawing); interanneal at 400–600 °C when cold work exceeds ~60 %, and remember drawn tempers soften above ~150 °C.
What is the maximum service temperature of TP1-H04?
TP1-H04 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between TP1-H58 and TP1-O60?
H58 is the default condition — default stocked condition for straight water/gas/ACR tube: good strength with enough ductility for cold bending on a former. O60: choose for coiled ACR/refrigeration tube, severe bending, flaring, expansion and deep-drawn parts. Yield strength is 235 MPa in H58 versus 70 MPa in O60.
Sources
- ASTM B88 / B280 Seamless Copper Tube (C12000, C12200) — ASTM (2020)
- CDA Alloy Datasheet C12000 (DLP) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties of Nonferrous 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.