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EN 1.4378 Stainless Steel vs. ACI-ASTM CA40 Steel

Both EN 1.4378 stainless steel and ACI-ASTM CA40 steel are iron alloys. They have 79% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 34
10
Fatigue Strength, MPa 340 to 550
460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 760 to 1130
910
Tensile Strength: Yield (Proof), MPa 430 to 970
860

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 910
750
Melting Completion (Liquidus), °C 1390
1440
Melting Onset (Solidus), °C 1350
1500
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.5
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.0
Embodied Energy, MJ/kg 39
28
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 23
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
89
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 2370
1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
33
Strength to Weight: Bending, points 24 to 31
27
Thermal Shock Resistance, points 16 to 23
33

Alloy Composition

Carbon (C), % 0 to 0.080
0.2 to 0.4
Chromium (Cr), % 17 to 19
11.5 to 14
Iron (Fe), % 61.2 to 69
81.5 to 88.3
Manganese (Mn), % 11.5 to 14.5
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 2.3 to 3.7
0 to 1.0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040