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ASTM A225 Steel vs. Nickel 725

ASTM A225 steel belongs to the iron alloys classification, while nickel 725 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A225 steel and the bottom bar is nickel 725.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 23
34
Fatigue Strength, MPa 330 to 390
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
78
Shear Strength, MPa 390 to 520
580
Tensile Strength: Ultimate (UTS), MPa 620 to 830
860
Tensile Strength: Yield (Proof), MPa 460 to 550
350

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
980
Melting Completion (Liquidus), °C 1460
1340
Melting Onset (Solidus), °C 1420
1270
Specific Heat Capacity, J/kg-K 470
440
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
75
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 1.8
13
Embodied Energy, MJ/kg 24 to 25
190
Embodied Water, L/kg 48
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
240
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22 to 29
28
Strength to Weight: Bending, points 21 to 25
24
Thermal Shock Resistance, points 18 to 24
23