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ASTM A387 Grade 91 Class 2 vs. C49300 Brass

ASTM A387 grade 91 class 2 belongs to the iron alloys classification, while C49300 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 91 class 2 and the bottom bar is C49300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 20
4.5 to 20
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 75
40
Shear Strength, MPa 420
270 to 290
Tensile Strength: Ultimate (UTS), MPa 670
430 to 520
Tensile Strength: Yield (Proof), MPa 470
210 to 410

Thermal Properties

Latent Heat of Fusion, J/g 270
170
Maximum Temperature: Mechanical, °C 600
120
Melting Completion (Liquidus), °C 1460
880
Melting Onset (Solidus), °C 1420
840
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 26
88
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
15
Electrical Conductivity: Equal Weight (Specific), % IACS 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
26
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 37
50
Embodied Water, L/kg 88
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
21 to 71
Resilience: Unit (Modulus of Resilience), kJ/m3 580
220 to 800
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 24
15 to 18
Strength to Weight: Bending, points 22
16 to 18
Thermal Diffusivity, mm2/s 6.9
29
Thermal Shock Resistance, points 19
14 to 18

Alloy Composition

Aluminum (Al), % 0 to 0.020
0 to 0.5
Antimony (Sb), % 0
0 to 0.5
Bismuth (Bi), % 0
0.5 to 2.0
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0
58 to 62
Iron (Fe), % 87.3 to 90.3
0 to 0.1
Lead (Pb), % 0
0 to 0.010
Manganese (Mn), % 0.3 to 0.6
0 to 0.030
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 1.5
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.2
Selenium (Se), % 0
0 to 0.2
Silicon (Si), % 0.2 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
1.0 to 1.8
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
30.6 to 40.5
Zirconium (Zr), % 0 to 0.010
0
Residuals, % 0
0 to 0.5