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ASTM A372 Grade K Steel vs. Nickel 22

ASTM A372 grade K steel belongs to the iron alloys classification, while nickel 22 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade K steel and the bottom bar is nickel 22.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 23
49
Fatigue Strength, MPa 440
330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
84
Shear Strength, MPa 490
560
Tensile Strength: Ultimate (UTS), MPa 780
790
Tensile Strength: Yield (Proof), MPa 620
360

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 440
990
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 48
10
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
70
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 1.8
12
Embodied Energy, MJ/kg 24
170
Embodied Water, L/kg 57
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
320
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
300
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 27
25
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 13
2.7
Thermal Shock Resistance, points 23
24

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.015
Chromium (Cr), % 1.0 to 1.8
20 to 22.5
Cobalt (Co), % 0
0 to 2.5
Iron (Fe), % 93.4 to 96.6
2.0 to 6.0
Manganese (Mn), % 0.1 to 0.4
0 to 0.015
Molybdenum (Mo), % 0.2 to 0.6
12.5 to 14.5
Nickel (Ni), % 2.0 to 3.3
50.8 to 63
Phosphorus (P), % 0 to 0.015
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.080
Sulfur (S), % 0 to 0.010
0 to 0.020
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35