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ACI-ASTM CK20 Steel vs. EN 2.4951 Nickel

ACI-ASTM CK20 steel belongs to the iron alloys classification, while EN 2.4951 nickel belongs to the nickel alloys. They have 44% of their average alloy composition in common. 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 ACI-ASTM CK20 steel and the bottom bar is EN 2.4951 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 37
34
Fatigue Strength, MPa 220
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 530
750
Tensile Strength: Yield (Proof), MPa 260
270

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1100
1150
Melting Completion (Liquidus), °C 1400
1360
Melting Onset (Solidus), °C 1430
1310
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 14
12
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
60
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 4.4
9.3
Embodied Energy, MJ/kg 62
130
Embodied Water, L/kg 190
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
200
Resilience: Unit (Modulus of Resilience), kJ/m3 170
190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 3.7
3.1
Thermal Shock Resistance, points 13
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.2
0.080 to 0.15
Chromium (Cr), % 23 to 27
18 to 21
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 46.7 to 58
0 to 5.0
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
65.4 to 81.7
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015
Titanium (Ti), % 0
0.2 to 0.6