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AISI 418 Stainless Steel vs. C68400 Brass

AISI 418 stainless steel belongs to the iron alloys classification, while C68400 brass belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 418 stainless steel and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17
18
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
41
Shear Strength, MPa 680
330
Tensile Strength: Ultimate (UTS), MPa 1100
540
Tensile Strength: Yield (Proof), MPa 850
310

Thermal Properties

Latent Heat of Fusion, J/g 270
210
Maximum Temperature: Mechanical, °C 770
130
Melting Completion (Liquidus), °C 1500
840
Melting Onset (Solidus), °C 1460
820
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 25
66
Thermal Expansion, µm/m-K 10
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
87
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
99

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 2.9
2.7
Embodied Energy, MJ/kg 41
47
Embodied Water, L/kg 110
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
81
Resilience: Unit (Modulus of Resilience), kJ/m3 1830
460
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 38
19
Strength to Weight: Bending, points 29
19
Thermal Diffusivity, mm2/s 6.7
21
Thermal Shock Resistance, points 40
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Boron (B), % 0
0.0010 to 0.030
Carbon (C), % 0.15 to 0.2
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
59 to 64
Iron (Fe), % 78.5 to 83.6
0 to 1.0
Lead (Pb), % 0
0 to 0.090
Manganese (Mn), % 0 to 0.5
0.2 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0 to 0.5
Phosphorus (P), % 0 to 0.040
0.030 to 0.3
Silicon (Si), % 0 to 0.5
1.5 to 2.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.5
Tungsten (W), % 2.5 to 3.5
0
Zinc (Zn), % 0
28.6 to 39.3
Residuals, % 0
0 to 0.5