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S45000 Stainless Steel vs. ACI-ASTM CA40F Steel

Both S45000 stainless steel and ACI-ASTM CA40F steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S45000 stainless steel and the bottom bar is ACI-ASTM CA40F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 410
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.8 to 14
13
Fatigue Strength, MPa 330 to 650
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
770
Tensile Strength: Yield (Proof), MPa 580 to 1310
550

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
390
Maximum Temperature: Mechanical, °C 840
750
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
27
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.0
Embodied Energy, MJ/kg 39
28
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 17
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
94
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 35 to 50
28
Strength to Weight: Bending, points 28 to 36
24
Thermal Diffusivity, mm2/s 4.5
7.2
Thermal Shock Resistance, points 33 to 47
28

Alloy Composition

Carbon (C), % 0 to 0.050
0.2 to 0.4
Chromium (Cr), % 14 to 16
11.5 to 14
Copper (Cu), % 1.3 to 1.8
0
Iron (Fe), % 72.1 to 79.3
81.6 to 88.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0 to 0.5
Nickel (Ni), % 5.0 to 7.0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0.2 to 0.4