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ASTM A387 Grade 21 Steel vs. Nickel 201

ASTM A387 grade 21 steel belongs to the iron alloys classification, while nickel 201 belongs to the nickel alloys. There are 30 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 nickel 201.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 21
4.5 to 45
Fatigue Strength, MPa 160 to 250
42 to 210
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 74
70
Shear Strength, MPa 310 to 370
270 to 380
Tensile Strength: Ultimate (UTS), MPa 500 to 590
390 to 660
Tensile Strength: Yield (Proof), MPa 230 to 350
80 to 510

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 480
900
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1440
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 41
78
Thermal Expansion, µm/m-K 13
13

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
65
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 1.8
11
Embodied Energy, MJ/kg 23
150
Embodied Water, L/kg 62
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
25 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
17 to 720
Stiffness to Weight: Axial, points 13
11
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 18 to 21
12 to 20
Strength to Weight: Bending, points 18 to 20
13 to 19
Thermal Diffusivity, mm2/s 11
20
Thermal Shock Resistance, points 14 to 17
11 to 19

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.020
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 94.4 to 96
0 to 0.4
Manganese (Mn), % 0.3 to 0.6
0 to 0.35
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
99 to 100
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.010

Comparable Variants