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EN 1.4971 Stainless Steel vs. Grade CW12MW Nickel

EN 1.4971 stainless steel belongs to the iron alloys classification, while grade CW12MW nickel belongs to the nickel alloys. They have 49% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is grade CW12MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 34
4.6
Fatigue Strength, MPa 270
130
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
85
Tensile Strength: Ultimate (UTS), MPa 800
560
Tensile Strength: Yield (Proof), MPa 340
310

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1410
1560
Specific Heat Capacity, J/kg-K 450
410
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
70
Density, g/cm3 8.4
9.1
Embodied Carbon, kg CO2/kg material 7.6
13
Embodied Energy, MJ/kg 110
180
Embodied Water, L/kg 300
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
22
Resilience: Unit (Modulus of Resilience), kJ/m3 280
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Shock Resistance, points 19
16

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.12
Chromium (Cr), % 20 to 22.5
15.5 to 17.5
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
4.5 to 7.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
16 to 18
Nickel (Ni), % 19 to 21
49.2 to 60.1
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
3.8 to 5.3
Vanadium (V), % 0
0.2 to 0.4