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ASTM A387 Grade 21 Steel vs. Nickel 890

ASTM A387 grade 21 steel belongs to the iron alloys classification, while nickel 890 belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 nickel 890.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
39
Fatigue Strength, MPa 160 to 250
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Shear Strength, MPa 310 to 370
400
Tensile Strength: Ultimate (UTS), MPa 500 to 590
590
Tensile Strength: Yield (Proof), MPa 230 to 350
230

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Maximum Temperature: Mechanical, °C 480
1000
Melting Completion (Liquidus), °C 1470
1390
Melting Onset (Solidus), °C 1430
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
47
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 1.8
8.2
Embodied Energy, MJ/kg 23
120
Embodied Water, L/kg 62
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
180
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
20
Strength to Weight: Bending, points 18 to 20
19
Thermal Shock Resistance, points 14 to 17
15

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.6
Carbon (C), % 0.050 to 0.15
0.060 to 0.14
Chromium (Cr), % 2.8 to 3.3
23.5 to 28.5
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 94.4 to 96
17.3 to 33.9
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
1.0 to 2.0
Nickel (Ni), % 0
40 to 45
Niobium (Nb), % 0
0.2 to 1.0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
1.0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.015
Tantalum (Ta), % 0
0.1 to 0.6
Titanium (Ti), % 0
0.15 to 0.6