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Nickel 625 vs. ASTM A387 Grade 22 Steel

Nickel 625 belongs to the nickel alloys classification, while ASTM A387 grade 22 steel belongs to the iron 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 nickel 625 and the bottom bar is ASTM A387 grade 22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 33 to 34
21
Fatigue Strength, MPa 240 to 320
160 to 240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
74
Shear Strength, MPa 530 to 600
300 to 380
Tensile Strength: Ultimate (UTS), MPa 790 to 910
480 to 600
Tensile Strength: Yield (Proof), MPa 320 to 450
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Maximum Temperature: Mechanical, °C 980
460
Melting Completion (Liquidus), °C 1350
1470
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 80
3.8
Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 14
1.7
Embodied Energy, MJ/kg 190
23
Embodied Water, L/kg 290
58

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
85 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
140 to 320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26 to 29
17 to 21
Strength to Weight: Bending, points 22 to 24
17 to 20
Thermal Diffusivity, mm2/s 2.9
11
Thermal Shock Resistance, points 22 to 25
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0.050 to 0.15
Chromium (Cr), % 20 to 23
2.0 to 2.5
Cobalt (Co), % 0 to 1.0
0
Iron (Fe), % 0 to 5.0
95.1 to 96.8
Manganese (Mn), % 0 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 8.0 to 10
0.9 to 1.1
Nickel (Ni), % 58 to 68.9
0
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 0 to 0.4
0

Comparable Variants