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ASTM A387 Grade 21 Steel vs. EN 2.4851 Nickel

ASTM A387 grade 21 steel belongs to the iron alloys classification, while EN 2.4851 nickel belongs to the nickel alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 2.4851 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
34
Fatigue Strength, MPa 160 to 250
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 310 to 370
430
Tensile Strength: Ultimate (UTS), MPa 500 to 590
650
Tensile Strength: Yield (Proof), MPa 230 to 350
230

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 480
1200
Melting Completion (Liquidus), °C 1470
1360
Melting Onset (Solidus), °C 1430
1310
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
11
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
49
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.8
8.1
Embodied Energy, MJ/kg 23
120
Embodied Water, L/kg 62
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
170
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18 to 21
22
Strength to Weight: Bending, points 18 to 20
20
Thermal Diffusivity, mm2/s 11
2.9
Thermal Shock Resistance, points 14 to 17
17

Alloy Composition

Aluminum (Al), % 0
1.0 to 1.7
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0.050 to 0.15
0.030 to 0.1
Chromium (Cr), % 2.8 to 3.3
21 to 25
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 94.4 to 96
7.7 to 18
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
58 to 63
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015
Titanium (Ti), % 0
0 to 0.5