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SAE-AISI 5120 Steel vs. Grade M30H Nickel

SAE-AISI 5120 steel belongs to the iron alloys classification, while grade M30H nickel belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5120 steel and the bottom bar is grade M30H nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Elongation at Break, % 16
11
Fatigue Strength, MPa 210
230
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
61
Tensile Strength: Ultimate (UTS), MPa 500
770
Tensile Strength: Yield (Proof), MPa 320
470

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
900
Melting Completion (Liquidus), °C 1460
1250
Melting Onset (Solidus), °C 1420
1200
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 47
22
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
50
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 1.4
7.7
Embodied Energy, MJ/kg 19
110
Embodied Water, L/kg 49
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
75
Resilience: Unit (Modulus of Resilience), kJ/m3 280
700
Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 18
25
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 13
5.7
Thermal Shock Resistance, points 16
27

Alloy Composition

Carbon (C), % 0.17 to 0.22
0 to 0.3
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0
27 to 33
Iron (Fe), % 97.6 to 98.3
0 to 3.5
Manganese (Mn), % 0.7 to 0.9
0 to 1.5
Nickel (Ni), % 0
57.9 to 70.3
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
2.7 to 3.7
Sulfur (S), % 0 to 0.040
0 to 0.030