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S81921 Stainless Steel vs. C43000 Brass

S81921 stainless steel belongs to the iron alloys classification, while C43000 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S81921 stainless steel and the bottom bar is C43000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 29
3.0 to 55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
42
Shear Strength, MPa 460
230 to 410
Tensile Strength: Ultimate (UTS), MPa 710
320 to 710
Tensile Strength: Yield (Proof), MPa 500
130 to 550

Thermal Properties

Latent Heat of Fusion, J/g 290
190
Maximum Temperature: Mechanical, °C 990
170
Melting Completion (Liquidus), °C 1430
1030
Melting Onset (Solidus), °C 1390
1000
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
28

Otherwise Unclassified Properties

Base Metal Price, % relative 14
29
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 2.9
2.8
Embodied Energy, MJ/kg 41
46
Embodied Water, L/kg 150
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
20 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 630
82 to 1350
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25
10 to 23
Strength to Weight: Bending, points 23
12 to 20
Thermal Diffusivity, mm2/s 4.0
36
Thermal Shock Resistance, points 20
11 to 25

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19 to 22
0
Copper (Cu), % 0
84 to 87
Iron (Fe), % 66.7 to 75.9
0 to 0.050
Lead (Pb), % 0
0 to 0.1
Manganese (Mn), % 2.0 to 4.0
0
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 2.0 to 4.0
0
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.7 to 2.7
Zinc (Zn), % 0
9.7 to 14.3
Residuals, % 0
0 to 0.5