Copper Alloy C87900-M01 vs C87900-M04
Copper Alloy · C87900 temper comparison
C87900-M01 and C87900-M04 are two conditions of the same copper alloy grade, C87900: M01 (as sand cast) versus M04 (as pressure die cast). The chemistry is identical, so every difference below comes from the condition. C87900-M04 is the stronger of the two: yield strength 240 MPa (34.8 ksi) against 185 MPa (26.8 ksi) for C87900-M01, about 30% more; tensile strength follows at 448 MPa (65 ksi) vs 380 MPa (55.1 ksi). In exchange, C87900-M01 is the more ductile: elongation 20% versus 15% for C87900-M04, and C87900-M04 is harder (125 HB vs 100 HB). C87900-M04 is stiffer (100 GPa vs 95 GPa).
C87900-M01Choose it when the part is bent, formed or impact-loaded.
C87900-M04Choose it when strength drives the design.
C87900-M01 vs C87900-M04: 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34
Physical
Density and transition temperatures.
Same in both: Density 8.3 g/cm³0.3 lb/in³ · Melting Point (Solidus) 821°C1,510 °F · Liquidus Temperature 916°C1,681 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 380 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 · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -100°C-148 °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.
Same in both: Machinability 78 / 100 · Machinability Rating (AISI 1212 = 100 %) 80% · Weldability 30 / 100 · Castability 90 / 100 · Brazeability / Solderability 78 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 48 MJ/kg20,636 BTU/lb · Embodied Carbon (primary production) 3.2 kg CO₂/kg · Embodied Water 300 L/kg35.9 gal/lb · Typical Recycled Content 60%
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.
C87900-M01 vs C87900-M04 — frequently asked
Is C87900-M04 stronger than C87900-M01?
Yes. C87900-M04 has a typical yield strength of 240 MPa (34.8 ksi) against 185 MPa (26.8 ksi) for C87900-M01 — about 30% more. Tensile strength is 448 MPa (65 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, M01 or M04?
M04 is the default C87900 condition in the FabDigit quote flow. 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.
When should I choose C87900-M01 over C87900-M04?
Pick C87900-M01 when the part is bent, formed or impact-loaded. Pick C87900-M04 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C87900-M01 and C87900-M04 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.