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SAE-AISI 4340M Steel vs. C37000 Muntz Metal

SAE-AISI 4340M steel belongs to the iron alloys classification, while C37000 Muntz Metal 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 SAE-AISI 4340M steel and the bottom bar is C37000 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 6.0
40
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 72
39
Shear Strength, MPa 1360
270
Tensile Strength: Ultimate (UTS), MPa 2340
400
Tensile Strength: Yield (Proof), MPa 1240
160

Thermal Properties

Latent Heat of Fusion, J/g 280
170
Maximum Temperature: Mechanical, °C 430
120
Melting Completion (Liquidus), °C 1440
900
Melting Onset (Solidus), °C 1400
890
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 38
120
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
27
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
30

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
23
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.9
2.7
Embodied Energy, MJ/kg 26
45
Embodied Water, L/kg 55
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
120
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 84
14
Strength to Weight: Bending, points 51
15
Thermal Diffusivity, mm2/s 10
39
Thermal Shock Resistance, points 70
13

Alloy Composition

Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
59 to 62
Iron (Fe), % 93.3 to 94.8
0 to 0.15
Lead (Pb), % 0
0.8 to 1.5
Manganese (Mn), % 0.65 to 0.9
0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
0
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0
Sulfur (S), % 0 to 0.012
0
Vanadium (V), % 0.050 to 0.1
0
Zinc (Zn), % 0
36 to 40.2
Residuals, % 0
0 to 0.4