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S81921 Stainless Steel vs. C43400 Brass

S81921 stainless steel belongs to the iron alloys classification, while C43400 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 C43400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 29
3.0 to 49
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
42
Shear Strength, MPa 460
250 to 390
Tensile Strength: Ultimate (UTS), MPa 710
310 to 690
Tensile Strength: Yield (Proof), MPa 500
110 to 560

Thermal Properties

Latent Heat of Fusion, J/g 290
190
Maximum Temperature: Mechanical, °C 990
170
Melting Completion (Liquidus), °C 1430
1020
Melting Onset (Solidus), °C 1390
990
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
31
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
32

Otherwise Unclassified Properties

Base Metal Price, % relative 14
28
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 2.9
2.7
Embodied Energy, MJ/kg 41
44
Embodied Water, L/kg 150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
19 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 630
57 to 1420
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25
10 to 22
Strength to Weight: Bending, points 23
12 to 20
Thermal Diffusivity, mm2/s 4.0
41
Thermal Shock Resistance, points 20
11 to 24

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 0.050
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
0.4 to 1.0
Zinc (Zn), % 0
11.4 to 15.6
Residuals, % 0
0 to 0.5