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EN 1.4020 Stainless Steel vs. ACI-ASTM CA40F Steel

Both EN 1.4020 stainless steel and ACI-ASTM CA40F steel are iron alloys. They have 82% 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 1.4020 stainless steel and the bottom bar is ACI-ASTM CA40F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 13 to 34
13
Fatigue Strength, MPa 340 to 540
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
770
Tensile Strength: Yield (Proof), MPa 430 to 950
550

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 890
750
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 11
7.5
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.0
Embodied Energy, MJ/kg 37
28
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 23
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
94
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
28
Strength to Weight: Bending, points 25 to 32
24
Thermal Shock Resistance, points 16 to 23
28

Alloy Composition

Carbon (C), % 0 to 0.15
0.2 to 0.4
Chromium (Cr), % 16.5 to 19
11.5 to 14
Iron (Fe), % 62.8 to 71.8
81.6 to 88.3
Manganese (Mn), % 11 to 14
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.5 to 2.5
0 to 1.0
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.030
0.2 to 0.4