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S31730 Stainless Steel vs. C69700 Brass

S31730 stainless steel belongs to the iron alloys classification, while C69700 brass belongs to the copper alloys. There are 25 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 S31730 stainless steel and the bottom bar is C69700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 40
25
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
41
Shear Strength, MPa 370
300
Tensile Strength: Ultimate (UTS), MPa 540
470
Tensile Strength: Yield (Proof), MPa 200
230

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 990
160
Melting Completion (Liquidus), °C 1430
930
Melting Onset (Solidus), °C 1390
880
Specific Heat Capacity, J/kg-K 470
400
Thermal Expansion, µm/m-K 16
19

Otherwise Unclassified Properties

Base Metal Price, % relative 24
26
Density, g/cm3 8.0
8.3
Embodied Carbon, kg CO2/kg material 4.6
2.7
Embodied Energy, MJ/kg 63
44
Embodied Water, L/kg 180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
99
Resilience: Unit (Modulus of Resilience), kJ/m3 99
250
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 19
16
Strength to Weight: Bending, points 18
16
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 4.0 to 5.0
75 to 80
Iron (Fe), % 52.4 to 61
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 0 to 2.0
0 to 0.4
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
0
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
2.5 to 3.5
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
13.9 to 22
Residuals, % 0
0 to 0.5