Copper Alloy C19800-H08 vs C19800-TM04
Copper Alloy · C19800 temper comparison
C19800-H08 and C19800-TM04 are two conditions of the same copper alloy grade, C19800: H08 (spring hard) versus TM04 (mill hardened, full hard). The chemistry is identical, so every difference below comes from the condition. C19800-H08 is the stronger of the two: yield strength 595 MPa (86.3 ksi) against 510 MPa (74 ksi) for C19800-TM04, about 17% more; tensile strength follows at 615 MPa (89.2 ksi) vs 530 MPa (76.9 ksi). In exchange, C19800-TM04 is the more ductile: elongation 6% versus 2% for C19800-H08, and C19800-H08 is harder (192 HV vs 168 HV). C19800-TM04 runs hotter in service (175°C vs 130°C continuous). On the shop floor, C19800-TM04 welds better (45 vs 35 out of 100).
C19800-H08Choose it when strength drives the design.
C19800-TM04Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C19800-H08 vs C19800-TM04: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all copper alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all copper alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 45 GPa6.5 Msi · Bulk Modulus 135 GPa19.6 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,020°C1,868 °F · Liquidus Temperature 1,055°C1,931 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 385 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.6 µm/m·K9.8 µin/in·°F · Latent Heat of Fusion 205 J/g88.1 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 85 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 3.8 kg CO₂/kg · Embodied Water 260 L/kg31.2 gal/lb · Typical Recycled Content 35%
Strength versus weight
Yield strength against density for every copper alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
C19800-H08 vs C19800-TM04 — frequently asked
Is C19800-H08 stronger than C19800-TM04?
Yes. C19800-H08 has a typical yield strength of 595 MPa (86.3 ksi) against 510 MPa (74 ksi) for C19800-TM04 — about 17% more. Tensile strength is 615 MPa (89.2 ksi) vs 530 MPa (76.9 ksi).
Which condition does FabDigit quote by default, H08 or TM04?
H04 is the default C19800 condition in the FabDigit quote flow (neither H08 nor TM04). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which welds better, C19800-H08 or C19800-TM04?
C19800-TM04. Its weldability rates fair (45/100) against fair (35/100) for C19800-H08.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C19800-H08 and C19800-TM04 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.