Materials / Compare

Brass C360 vs. Steel AISI 1018

Compare Brass C360 vs. Steel AISI 1018 strength, stiffness, weight and thermal properties.

Brass C360Wrought
Steel AISI 1018Wrought
MechanicalBrass C360Steel AISI 1018
Yield strength310MPa1producer-stated372MPa220% stronger
Ultimate tensile strength400MPa1producer-stated441MPa2
Elongation at break25%11.67x more ductilein 2 in15%2
Young's modulus (stiffness)96.5GPa1base material200GPa3
Density8,498kg/m³1base material7,861kg/m³3
Strength to weight36.5kN·m/kg47.3kN·m/kg30% higher
Stiffness to weight11.4MN·m/kg25.4MN·m/kg2.24x higher
Poisson's ratiobase material0.344base material0.323
Shear modulus36GPa75.7GPa2.1x stiffer in shear
Bulk modulus101GPa185GPa1.84x higher
Speed of sound3,370m/s5,043m/s50% faster
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcretePCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Brass C360Steel AISI 1018
Stiffness against densityHigher and further left: stiffer for its weight
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Brass C360Steel AISI 1018
Strength against densityHigher and further left: stronger for its weight
ThermalBrass C360Steel AISI 1018
Thermal conductivity116W/m·K1base material51.9W/m·K3
Thermal expansion20.5µm/m·K1base material12µm/m·K51.71x less
100 mm part over a 50 °C swing103µm growth60µm growth1.71x less
Specific heat377J/kg·K1base material486J/kg·K3
Heats up and cools (diffusivity)36.2mm²/s2.67x faster13.6mm²/s
Thermal shock resistance11,997W/m2.19x more resistant5,473W/m
Melting pointsolidus-liquidus888–899°C1not sourced
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Brass C360Steel AISI 1018
Thermal conductivity against densityHigher and further left: spreads more heat for its weight
0.111010010100Thermal conductivity (W/m·K)Thermal expansion (µm/m·K)Plastic PETGPlastic ABSPlastic NylonWoodAluminumSteelIronTitaniumStainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPlywoodPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Brass C360Steel AISI 1018
Thermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources5 documents: Copper Development Association, Niagara LaSalle, U.S. Department of Defense, Wieland, Ovako
Brass C360
C36000 free-cutting brass, H02 half-hard rod 1 in. section (20% cold work), copper.org typical values
Steel AISI 1018
AISI 1018 cold drawn bar (Niagara LaSalle, cold-finished bar producer)
  1. 1
    C36000 Alloy (copper.org)Copper Development Associationarchived copyBrass C360 · Yield strength: typical, 0.5% extension under loadBrass C360 · Ultimate tensile strength: typicalBrass C360 · Elongation at break: typical, 1 in. rodBrass C360 · Young's modulus (stiffness): typical, temper-independentBrass C360 · Density: nominalBrass C360 · Thermal conductivity: typical, 20 °CBrass C360 · Thermal expansion: typical, mean 20-300 °CBrass C360 · Specific heat: typical, 20 °CBrass C360 · Melting point: solidus-liquidus
  2. 2
    1018 PropertiesNiagara LaSallearchived copySteel AISI 1018 · Yield strength: producer-stated, cold drawnSteel AISI 1018 · Ultimate tensile strength: producer-stated, cold drawnSteel AISI 1018 · Elongation at break: in 2 in (50.8 mm)
  3. 3
    MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures (2003)U.S. Department of DefenseSteel AISI 1018 · Young's modulus (stiffness): base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Density: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Poisson's ratio: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Thermal conductivity: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)Steel AISI 1018 · Specific heat: base material: AISI 1025 plain carbon steel (MIL-HDBK-5J design value; ASTM A108 bar is the cold-finished carbon-steel bar spec that also covers 1018)
  4. 4
    Wieland-Z30 (CuZn39Pb2, C37700) Data SheetWielandarchived copyBrass C360 · Poisson's ratio: base material: leaded free-machining brass CuZn39Pb2 (C37700), Wieland-Z30 rolled products, reference value at room temperature
  5. 5
    S275JR Steel GradeOvakoSteel AISI 1018 · Thermal expansion: base material: unalloyed carbon steel, Ovako family table (S275JR, 'none alloyed structural steels', C <= 0.21%); mean 20-300 °C

Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.

Questions

Mechanical

Is Brass C360 stronger than Steel AISI 1018?

Steel AISI 1018 is stronger: its yield strength is 372 MPa against 310 MPa for Brass C360 (20%).

Which is lighter, Brass C360 or Steel AISI 1018?

Steel AISI 1018 is lighter: 7,861 kg/m³ against 8,498 kg/m³ for Brass C360.

Which is stiffer, Brass C360 or Steel AISI 1018?

Steel AISI 1018 is stiffer: Young's modulus 200 GPa against 96.5 GPa for Brass C360, so the same part in Steel AISI 1018 deflects less under the same load.

Which is lighter for the same job, Brass C360 or Steel AISI 1018?

For the same stiffness or strength: Steel AISI 1018 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.

Part that must beBrass C360Steel AISI 1018
Stiff rod or tie (tension)2.24x heavierlighter
Stiff beam (bending)1.56x heavierlighter
Stiff panel or plate38% heavierlighter
Strong rod or tie30% heavierlighter
Strong beam22% heavierlighter
Strong panel or plate18% heavierlighter

For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).

Which is more ductile, Brass C360 or Steel AISI 1018?

Brass C360 stretches further before it breaks: 25% elongation at break against 15% for Steel AISI 1018.

Thermal

Which conducts heat better, Brass C360 or Steel AISI 1018?

Brass C360 conducts heat better: 116 W/m·K against 51.9 W/m·K for Steel AISI 1018.

Which expands less with temperature?

Steel AISI 1018 expands less: 12 µm/m·K against 20.5 µm/m·K for Brass C360.

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