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SAE-AISI 81B45 Steel vs. CC490K Brass

SAE-AISI 81B45 steel belongs to the iron alloys classification, while CC490K 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 CC490K brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 200
76
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12 to 24
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 540 to 670
230
Tensile Strength: Yield (Proof), MPa 350 to 560
110

Thermal Properties

Latent Heat of Fusion, J/g 250
190
Maximum Temperature: Mechanical, °C 410
160
Melting Completion (Liquidus), °C 1460
980
Melting Onset (Solidus), °C 1420
910
Specific Heat Capacity, J/kg-K 470
370
Thermal Conductivity, W/m-K 40
72
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
16
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
16

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
2.9
Embodied Energy, MJ/kg 20
47
Embodied Water, L/kg 49
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
28
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
54
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 19 to 24
7.3
Strength to Weight: Bending, points 19 to 22
9.5
Thermal Diffusivity, mm2/s 11
22
Thermal Shock Resistance, points 17 to 21
8.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Antimony (Sb), % 0
0 to 0.3
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
81 to 86
Iron (Fe), % 97 to 98
0 to 0.5
Lead (Pb), % 0
3.0 to 6.0
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 0.2 to 0.4
0 to 2.0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0.15 to 0.35
0 to 0.010
Sulfur (S), % 0 to 0.040
0 to 0.1
Tin (Sn), % 0
2.0 to 3.5
Zinc (Zn), % 0
7.0 to 9.5