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S45000 Stainless Steel vs. ACI-ASTM CA15M Steel

Both S45000 stainless steel and ACI-ASTM CA15M steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 33 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 S45000 stainless steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 410
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.8 to 14
20
Fatigue Strength, MPa 330 to 650
330
Poisson's Ratio 0.28
0.28
Reduction in Area, % 22 to 50
34
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
690
Tensile Strength: Yield (Proof), MPa 580 to 1310
510

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 400
390
Maximum Temperature: Mechanical, °C 840
760
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
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
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.1
Embodied Energy, MJ/kg 39
29
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 17
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
130
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 35 to 50
25
Strength to Weight: Bending, points 28 to 36
22
Thermal Diffusivity, mm2/s 4.5
7.2
Thermal Shock Resistance, points 33 to 47
25

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.15
Chromium (Cr), % 14 to 16
11.5 to 14
Copper (Cu), % 1.3 to 1.8
0
Iron (Fe), % 72.1 to 79.3
82.1 to 88.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0.15 to 1.0
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 0.65
Sulfur (S), % 0 to 0.030
0 to 0.040