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ASTM A387 Grade 21 Steel vs. Grade CZ100 Nickel

ASTM A387 grade 21 steel belongs to the iron alloys classification, while grade CZ100 nickel belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21 steel and the bottom bar is grade CZ100 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 21
11
Fatigue Strength, MPa 160 to 250
68
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 74
69
Tensile Strength: Ultimate (UTS), MPa 500 to 590
390
Tensile Strength: Yield (Proof), MPa 230 to 350
140

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Maximum Temperature: Mechanical, °C 480
900
Melting Completion (Liquidus), °C 1470
1350
Melting Onset (Solidus), °C 1430
1300
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 41
73
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
19
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
19

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
60
Density, g/cm3 7.9
8.8
Embodied Carbon, kg CO2/kg material 1.8
10
Embodied Energy, MJ/kg 23
140
Embodied Water, L/kg 62
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
35
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
54
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 18 to 21
12
Strength to Weight: Bending, points 18 to 20
14
Thermal Diffusivity, mm2/s 11
19
Thermal Shock Resistance, points 14 to 17
14

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 1.0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
0 to 1.3
Iron (Fe), % 94.4 to 96
0 to 3.0
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
95 to 100
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.030