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ASTM A572 Steel vs. Nickel 718

ASTM A572 steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A572 steel and the bottom bar is nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18 to 25
12 to 50
Fatigue Strength, MPa 240 to 340
460 to 760
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
75
Shear Strength, MPa 300 to 380
660 to 950
Tensile Strength: Ultimate (UTS), MPa 470 to 620
930 to 1530
Tensile Strength: Yield (Proof), MPa 330 to 510
510 to 1330

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
980
Melting Completion (Liquidus), °C 1460
1340
Melting Onset (Solidus), °C 1420
1260
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 51
11
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.3
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
75
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.6
13
Embodied Energy, MJ/kg 22
190
Embodied Water, L/kg 47
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 110
140 to 390
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 690
660 to 4560
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 17 to 22
31 to 51
Strength to Weight: Bending, points 17 to 21
25 to 35
Thermal Diffusivity, mm2/s 14
3.0
Thermal Shock Resistance, points 14 to 18
27 to 44