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ASTM A387 Grade 21 Steel vs. Nickel 601

ASTM A387 grade 21 steel belongs to the iron alloys classification, while nickel 601 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 601.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
10 to 38
Fatigue Strength, MPa 160 to 250
220 to 380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 310 to 370
440 to 530
Tensile Strength: Ultimate (UTS), MPa 500 to 590
660 to 890
Tensile Strength: Yield (Proof), MPa 230 to 350
290 to 800

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 480
1100
Melting Completion (Liquidus), °C 1470
1410
Melting Onset (Solidus), °C 1430
1360
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
1.5
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
8.3
Embodied Carbon, kg CO2/kg material 1.8
8.0
Embodied Energy, MJ/kg 23
110
Embodied Water, L/kg 62
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
86 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
210 to 1630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18 to 21
22 to 30
Strength to Weight: Bending, points 18 to 20
20 to 25
Thermal Diffusivity, mm2/s 11
2.8
Thermal Shock Resistance, points 14 to 17
17 to 23

Alloy Composition

Aluminum (Al), % 0
1.0 to 1.7
Carbon (C), % 0.050 to 0.15
0 to 0.1
Chromium (Cr), % 2.8 to 3.3
21 to 25
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 94.4 to 96
7.7 to 20
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
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015

Comparable Variants