Copper Alloy C33200-H04 vs C33200-OS025
Copper Alloy · C33200 temper comparison
C33200-H04 and C33200-OS025 are two conditions of the same copper alloy grade, C33200: H04 (full hard) versus OS025 (annealed to 0.025 mm grain size). The chemistry is identical, so every difference below comes from the condition. C33200-H04 is the stronger of the two: yield strength 370 MPa (53.7 ksi) against 110 MPa (16 ksi) for C33200-OS025, about 3.4 times as much; tensile strength follows at 470 MPa (68.2 ksi) vs 325 MPa (47.1 ksi). In exchange, C33200-OS025 is the more ductile: elongation 55% versus 12% for C33200-H04, and C33200-H04 is harder (130 HB vs 65 HB). C33200-OS025 runs hotter in service (200°C vs 150°C continuous).
C33200-H04Choose it when strength drives the design.
C33200-OS025Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C33200-H04 vs C33200-OS025: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Elastic (Young's) Modulus 103 GPa14.9 Msi · Shear Modulus 39 GPa5.7 Msi · Bulk Modulus 112 GPa16.2 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.47 g/cm³0.31 lb/in³ · Melting Point (Solidus) 899°C1,650 °F · Liquidus Temperature 932°C1,710 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 116 W/m·K67 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.2 µm/m·K11.2 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.28 V · Corrosion Resistance 55 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 20 / 100 · Brazeability / Solderability 88 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 55 MJ/kg23,646 BTU/lb · Embodied Carbon (primary production) 3.6 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 70%
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.
C33200-H04 vs C33200-OS025 — frequently asked
Is C33200-H04 stronger than C33200-OS025?
Yes. C33200-H04 has a typical yield strength of 370 MPa (53.7 ksi) against 110 MPa (16 ksi) for C33200-OS025 — about 3.4 times as much. Tensile strength is 470 MPa (68.2 ksi) vs 325 MPa (47.1 ksi).
Which condition does FabDigit quote by default, H04 or OS025?
H80 is the default C33200 condition in the FabDigit quote flow (neither H04 nor OS025). 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 is easier to machine, C33200-H04 or C33200-OS025?
C33200-H04, by a small margin. Both rate very good for machinability — 82/100 against 77/100 for C33200-OS025.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C33200-H04 and C33200-OS025 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.