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EN 1.4931 Steel vs. ACI-ASTM CA40F Steel

Both EN 1.4931 steel and ACI-ASTM CA40F steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4931 steel and the bottom bar is ACI-ASTM CA40F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
13
Fatigue Strength, MPa 410
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 810
770
Tensile Strength: Yield (Proof), MPa 620
550

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
750
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
27
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.0
Embodied Energy, MJ/kg 42
28
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 16
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
94
Resilience: Unit (Modulus of Resilience), kJ/m3 970
790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
28
Strength to Weight: Bending, points 25
24
Thermal Diffusivity, mm2/s 6.5
7.2
Thermal Shock Resistance, points 22
28

Alloy Composition

Carbon (C), % 0.2 to 0.26
0.2 to 0.4
Chromium (Cr), % 11.3 to 12.2
11.5 to 14
Iron (Fe), % 83.2 to 86.8
81.6 to 88.3
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 1.0 to 1.2
0 to 0.5
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.020
0.2 to 0.4
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0