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ACI-ASTM CA40 Steel vs. AISI 305 Stainless Steel

Both ACI-ASTM CA40 steel and AISI 305 stainless steel are iron alloys. They have 83% 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 CA40 steel and the bottom bar is AISI 305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
34 to 45
Fatigue Strength, MPa 460
210 to 280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 910
580 to 710
Tensile Strength: Yield (Proof), MPa 860
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 750
540
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1500
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
16
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
3.2
Embodied Energy, MJ/kg 28
45
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 14
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
200 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
130 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
20 to 25
Strength to Weight: Bending, points 27
20 to 23
Thermal Diffusivity, mm2/s 6.7
4.2
Thermal Shock Resistance, points 33
13 to 15

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.12
Chromium (Cr), % 11.5 to 14
17 to 19
Iron (Fe), % 81.5 to 88.3
65.1 to 72.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
10.5 to 13
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030