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EN 1.4122 Stainless Steel vs. Grade CW12MW Nickel

EN 1.4122 stainless steel belongs to the iron alloys classification, while grade CW12MW nickel belongs to the nickel alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4122 stainless steel and the bottom bar is grade CW12MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 14
4.6
Fatigue Strength, MPa 260 to 360
130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
85
Tensile Strength: Ultimate (UTS), MPa 790 to 850
560
Tensile Strength: Yield (Proof), MPa 450 to 630
310

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 870
960
Melting Completion (Liquidus), °C 1440
1610
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
70
Density, g/cm3 7.7
9.1
Embodied Carbon, kg CO2/kg material 2.4
13
Embodied Energy, MJ/kg 33
180
Embodied Water, L/kg 120
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
22
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 28 to 31
17
Strength to Weight: Bending, points 25 to 26
17
Thermal Shock Resistance, points 28 to 30
16

Alloy Composition

Carbon (C), % 0.33 to 0.45
0 to 0.12
Chromium (Cr), % 15.5 to 17.5
15.5 to 17.5
Iron (Fe), % 77.2 to 83.4
4.5 to 7.5
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.3
16 to 18
Nickel (Ni), % 0 to 1.0
49.2 to 60.1
Phosphorus (P), % 0 to 0.040
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), % 0
3.8 to 5.3
Vanadium (V), % 0
0.2 to 0.4