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AISI 309 Stainless Steel vs. Grade CW12MW Nickel

AISI 309 stainless steel belongs to the iron alloys classification, while grade CW12MW nickel belongs to the nickel alloys. They have a modest 37% 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 (9, in this case) are not shown.

For each property being compared, the top bar is AISI 309 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, % 34 to 47
4.6
Fatigue Strength, MPa 250 to 280
130
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
85
Tensile Strength: Ultimate (UTS), MPa 600 to 710
560
Tensile Strength: Yield (Proof), MPa 260 to 350
310

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 980
960
Melting Completion (Liquidus), °C 1450
1610
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 19
70
Density, g/cm3 7.8
9.1
Embodied Carbon, kg CO2/kg material 3.6
13
Embodied Energy, MJ/kg 51
180
Embodied Water, L/kg 170
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
22
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21 to 25
17
Strength to Weight: Bending, points 20 to 23
17
Thermal Shock Resistance, points 14 to 16
16

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.12
Chromium (Cr), % 22 to 24
15.5 to 17.5
Iron (Fe), % 58 to 66
4.5 to 7.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
16 to 18
Nickel (Ni), % 12 to 15
49.2 to 60.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
3.8 to 5.3
Vanadium (V), % 0
0.2 to 0.4