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ACI-ASTM CF3 Steel vs. AISI 305 Stainless Steel

Both ACI-ASTM CF3 steel and AISI 305 stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF3 steel and the bottom bar is AISI 305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 60
34 to 45
Fatigue Strength, MPa 270
210 to 280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 510
580 to 710
Tensile Strength: Yield (Proof), MPa 250
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 960
540
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 16
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
3.2
Embodied Energy, MJ/kg 45
45
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 20
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
200 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 160
130 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
20 to 25
Strength to Weight: Bending, points 18
20 to 23
Thermal Diffusivity, mm2/s 4.3
4.2
Thermal Shock Resistance, points 11
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 17 to 21
17 to 19
Iron (Fe), % 62.9 to 75
65.1 to 72.5
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 12
10.5 to 13
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030