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ASTM A387 Grade 21 Steel vs. N06045 Nickel

ASTM A387 grade 21 steel belongs to the iron alloys classification, while N06045 nickel belongs to the nickel alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 A387 grade 21 steel and the bottom bar is N06045 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
37
Fatigue Strength, MPa 160 to 250
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 310 to 370
470
Tensile Strength: Ultimate (UTS), MPa 500 to 590
690
Tensile Strength: Yield (Proof), MPa 230 to 350
270

Thermal Properties

Latent Heat of Fusion, J/g 260
350
Maximum Temperature: Mechanical, °C 480
1010
Melting Completion (Liquidus), °C 1470
1350
Melting Onset (Solidus), °C 1430
1300
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
42
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.8
6.9
Embodied Energy, MJ/kg 23
98
Embodied Water, L/kg 62
250

Common Calculations

PREN (Pitting Resistance) 6.4
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
200
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
24
Strength to Weight: Bending, points 18 to 20
22
Thermal Shock Resistance, points 14 to 17
18

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.050 to 0.12
Cerium (Ce), % 0
0.030 to 0.090
Chromium (Cr), % 2.8 to 3.3
26 to 29
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 94.4 to 96
21 to 25
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
45 to 50.4
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.5
2.5 to 3.0
Sulfur (S), % 0 to 0.025
0 to 0.010