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ACI-ASTM CF16Fa Steel vs. S31727 Stainless Steel

Both ACI-ASTM CF16Fa steel and S31727 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 28 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 ACI-ASTM CF16Fa steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
40
Fatigue Strength, MPa 170
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 540
630
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 980
1010
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 17
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.3
4.7
Embodied Energy, MJ/kg 47
64
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 21
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
200
Resilience: Unit (Modulus of Resilience), kJ/m3 140
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 19
20
Thermal Shock Resistance, points 12
14

Alloy Composition

Carbon (C), % 0 to 0.16
0 to 0.030
Chromium (Cr), % 18 to 21
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 62.1 to 72.4
53.7 to 61.3
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0.4 to 0.8
3.8 to 4.5
Nickel (Ni), % 9.0 to 12
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0.2 to 0.4
0 to 0.030