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ACI-ASTM CA15M Steel vs. S32003 Stainless Steel

Both ACI-ASTM CA15M steel and S32003 stainless steel are iron alloys. They have 87% 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 ACI-ASTM CA15M steel and the bottom bar is S32003 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 20
28
Fatigue Strength, MPa 330
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 690
730
Tensile Strength: Yield (Proof), MPa 510
510

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 760
1010
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
15
Thermal Expansion, µm/m-K 10
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.1
3.0
Embodied Energy, MJ/kg 29
42
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 15
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
180
Resilience: Unit (Modulus of Resilience), kJ/m3 670
660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 7.2
4.0
Thermal Shock Resistance, points 25
21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 11.5 to 14
19.5 to 22.5
Iron (Fe), % 82.1 to 88.4
68.2 to 75.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.15 to 1.0
1.5 to 2.0
Nickel (Ni), % 0 to 1.0
3.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.65
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.020