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ACI-ASTM CA40F Steel vs. S15500 Stainless Steel

Both ACI-ASTM CA40F steel and S15500 stainless 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 (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA40F steel and the bottom bar is S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
290 to 430
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 13
6.8 to 16
Fatigue Strength, MPa 320
350 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 770
890 to 1490
Tensile Strength: Yield (Proof), MPa 550
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 750
820
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
17
Thermal Expansion, µm/m-K 10
11

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
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.7
Embodied Energy, MJ/kg 28
39
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 14
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 790
890 to 4460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
32 to 53
Strength to Weight: Bending, points 24
26 to 37
Thermal Diffusivity, mm2/s 7.2
4.6
Thermal Shock Resistance, points 28
30 to 50

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.070
Chromium (Cr), % 11.5 to 14
14 to 15.5
Copper (Cu), % 0
2.5 to 4.5
Iron (Fe), % 81.6 to 88.3
71.9 to 79.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0.2 to 0.4
0 to 0.030