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ASTM A387 Grade 2 Steel vs. Grade CW12MW Nickel

ASTM A387 grade 2 steel belongs to the iron alloys classification, while grade CW12MW nickel belongs to the nickel alloys. There are 25 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 ASTM A387 grade 2 steel and the bottom bar is grade CW12MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 25
4.6
Fatigue Strength, MPa 190 to 250
130
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
85
Tensile Strength: Ultimate (UTS), MPa 470 to 550
560
Tensile Strength: Yield (Proof), MPa 260 to 350
310

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
960
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
410
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
70
Density, g/cm3 7.9
9.1
Embodied Carbon, kg CO2/kg material 1.6
13
Embodied Energy, MJ/kg 20
180
Embodied Water, L/kg 50
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
22
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 16 to 20
17
Strength to Weight: Bending, points 17 to 19
17
Thermal Shock Resistance, points 14 to 16
16

Alloy Composition

Carbon (C), % 0.050 to 0.21
0 to 0.12
Chromium (Cr), % 0.5 to 0.8
15.5 to 17.5
Iron (Fe), % 97.1 to 98.3
4.5 to 7.5
Manganese (Mn), % 0.55 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.45 to 0.6
16 to 18
Nickel (Ni), % 0
49.2 to 60.1
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0
3.8 to 5.3
Vanadium (V), % 0
0.2 to 0.4