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ACI-ASTM CA40 Steel vs. EN 1.4911 Stainless Steel

Both ACI-ASTM CA40 steel and EN 1.4911 stainless steel are iron alloys. They have a moderately high 92% 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 ACI-ASTM CA40 steel and the bottom bar is EN 1.4911 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
11
Fatigue Strength, MPa 460
530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 910
1070
Tensile Strength: Yield (Proof), MPa 860
970

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 750
700
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1500
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
20
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
20
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
3.4
Embodied Energy, MJ/kg 28
49
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 14
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
2410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
38
Strength to Weight: Bending, points 27
30
Thermal Diffusivity, mm2/s 6.7
5.4
Thermal Shock Resistance, points 33
37

Alloy Composition

Boron (B), % 0
0.0050 to 0.015
Carbon (C), % 0.2 to 0.4
0.050 to 0.12
Chromium (Cr), % 11.5 to 14
9.8 to 11.2
Cobalt (Co), % 0
5.0 to 7.0
Iron (Fe), % 81.5 to 88.3
75.7 to 83.8
Manganese (Mn), % 0 to 1.0
0.3 to 1.3
Molybdenum (Mo), % 0 to 0.5
0.5 to 1.0
Nickel (Ni), % 0 to 1.0
0.2 to 1.2
Niobium (Nb), % 0
0.2 to 0.5
Nitrogen (N), % 0
0 to 0.035
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0.1 to 0.8
Sulfur (S), % 0 to 0.040
0 to 0.015
Tungsten (W), % 0
0 to 0.7
Vanadium (V), % 0
0.1 to 0.4