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AISI 304 Stainless Steel vs. C68400 Brass

AISI 304 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 304 stainless steel and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 360
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 8.0 to 43
18
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
41
Shear Strength, MPa 400 to 690
330
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
540
Tensile Strength: Yield (Proof), MPa 230 to 860
310

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Maximum Temperature: Mechanical, °C 710
130
Melting Completion (Liquidus), °C 1450
840
Melting Onset (Solidus), °C 1400
820
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 16
66
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
87
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
99

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 43
47
Embodied Water, L/kg 150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
81
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
460
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 21 to 42
19
Strength to Weight: Bending, points 20 to 32
19
Thermal Diffusivity, mm2/s 4.2
21
Thermal Shock Resistance, points 12 to 25
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Boron (B), % 0
0.0010 to 0.030
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
59 to 64
Iron (Fe), % 66.5 to 74
0 to 1.0
Lead (Pb), % 0
0 to 0.090
Manganese (Mn), % 0 to 2.0
0.2 to 1.5
Nickel (Ni), % 8.0 to 10.5
0 to 0.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0.030 to 0.3
Silicon (Si), % 0 to 0.75
1.5 to 2.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0
28.6 to 39.3
Residuals, % 0
0 to 0.5