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SAE-AISI 81B45 Steel vs. C83300 Brass

SAE-AISI 81B45 steel belongs to the iron alloys classification, while C83300 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 81B45 steel and the bottom bar is C83300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
35
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12 to 24
35
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
42
Tensile Strength: Ultimate (UTS), MPa 540 to 670
220
Tensile Strength: Yield (Proof), MPa 350 to 560
69

Thermal Properties

Latent Heat of Fusion, J/g 250
200
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1460
1060
Melting Onset (Solidus), °C 1420
1030
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 40
160
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
32
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
33

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
30
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 1.5
2.7
Embodied Energy, MJ/kg 20
44
Embodied Water, L/kg 49
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
60
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
21
Stiffness to Weight: Axial, points 13
7.0
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 19 to 24
6.9
Strength to Weight: Bending, points 19 to 22
9.2
Thermal Diffusivity, mm2/s 11
48
Thermal Shock Resistance, points 17 to 21
7.9

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.35 to 0.55
0
Copper (Cu), % 0
92 to 94
Iron (Fe), % 97 to 98
0
Lead (Pb), % 0
1.0 to 2.0
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
1.0 to 2.0
Zinc (Zn), % 0
2.0 to 6.0
Residuals, % 0
0 to 0.7