Copper Alloy C37100-H80 vs C37100-M30
Copper Alloy · C37100 temper comparison
C37100-H80 and C37100-M30 are two conditions of the same copper alloy grade, C37100: H80 (hard drawn) versus M30 (as hot extruded). The chemistry is identical, so every difference below comes from the condition. C37100-H80 is the stronger of the two: yield strength 275 MPa (39.9 ksi) against 140 MPa (20.3 ksi) for C37100-M30, about 96% more; tensile strength follows at 395 MPa (57.3 ksi) vs 340 MPa (49.3 ksi). In exchange, C37100-M30 is the more ductile: elongation 40% versus 20% for C37100-H80, and C37100-H80 is harder (135 HB vs 100 HB). C37100-M30 runs hotter in service (200°C vs 180°C continuous).
C37100-H80Choose it when strength drives the design.
C37100-M30Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C37100-H80 vs C37100-M30: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
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 8.44 g/cm³0.3 lb/in³ · Melting Point (Solidus) 885°C1,625 °F · Liquidus Temperature 900°C1,652 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 123 W/m·K71.1 BTU/hr·ft·°F · Specific Heat Capacity 377 J/kg·K0.09 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 20.8 µm/m·K11.6 µin/in·°F · Latent Heat of Fusion 170 J/g73.1 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 28 % IACS · Electrical Resistivity 6.2×10⁻⁸ Ω·m2.44 µΩ·in
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
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 70% · Weldability 35 / 100 · Castability 55 / 100 · Brazeability / Solderability 80 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 48 MJ/kg20,636 BTU/lb · Embodied Carbon (primary production) 3.1 kg CO₂/kg · Embodied Water 230 L/kg27.6 gal/lb · Typical Recycled Content 65%
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.
C37100-H80 vs C37100-M30 — frequently asked
Is C37100-H80 stronger than C37100-M30?
Yes. C37100-H80 has a typical yield strength of 275 MPa (39.9 ksi) against 140 MPa (20.3 ksi) for C37100-M30 — about 96% more. Tensile strength is 395 MPa (57.3 ksi) vs 340 MPa (49.3 ksi).
Which condition does FabDigit quote by default, H80 or M30?
H80 is the default C37100 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.
Which is easier to machine, C37100-H80 or C37100-M30?
C37100-H80, by a small margin. Both rate very good for machinability — 78/100 against 72/100 for C37100-M30.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C37100-H80 and C37100-M30 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.