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ACI-ASTM CA40F Steel vs. S21600 Stainless Steel

Both ACI-ASTM CA40F steel and S21600 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA40F steel and the bottom bar is S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13
46
Fatigue Strength, MPa 320
360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 770
710
Tensile Strength: Yield (Proof), MPa 550
390

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 750
990
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
17
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
3.6
Embodied Energy, MJ/kg 28
50
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 14
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
270
Resilience: Unit (Modulus of Resilience), kJ/m3 790
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 24
23
Thermal Shock Resistance, points 28
15

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.080
Chromium (Cr), % 11.5 to 14
17.5 to 22
Iron (Fe), % 81.6 to 88.3
57.6 to 67.8
Manganese (Mn), % 0 to 1.0
7.5 to 9.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 0 to 1.0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0.2 to 0.4
0 to 0.030