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ASTM A387 Grade 21 Steel vs. EN 2.4878 Nickel

ASTM A387 grade 21 steel belongs to the iron alloys classification, while EN 2.4878 nickel 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 A387 grade 21 steel and the bottom bar is EN 2.4878 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
13 to 17
Fatigue Strength, MPa 160 to 250
400 to 410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
78
Shear Strength, MPa 310 to 370
750 to 760
Tensile Strength: Ultimate (UTS), MPa 500 to 590
1210 to 1250
Tensile Strength: Yield (Proof), MPa 230 to 350
740 to 780

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Maximum Temperature: Mechanical, °C 480
1030
Melting Completion (Liquidus), °C 1470
1370
Melting Onset (Solidus), °C 1430
1320
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 41
11
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
80
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 1.8
10
Embodied Energy, MJ/kg 23
150
Embodied Water, L/kg 62
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
150 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
1370 to 1540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
41 to 42
Strength to Weight: Bending, points 18 to 20
31
Thermal Diffusivity, mm2/s 11
2.8
Thermal Shock Resistance, points 14 to 17
37 to 39

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.010 to 0.015
Carbon (C), % 0.050 to 0.15
0.030 to 0.070
Chromium (Cr), % 2.8 to 3.3
23 to 25
Cobalt (Co), % 0
19 to 21
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 94.4 to 96
0 to 1.0
Manganese (Mn), % 0.3 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.9 to 1.1
1.0 to 2.0
Nickel (Ni), % 0
43.6 to 52.2
Niobium (Nb), % 0
0.7 to 1.2
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.0070
Tantalum (Ta), % 0
0 to 0.050
Titanium (Ti), % 0
2.8 to 3.2
Zirconium (Zr), % 0
0.030 to 0.070

Comparable Variants