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EN 1.4418 Stainless Steel vs. ACI-ASTM CA28MWV Steel

Both EN 1.4418 stainless steel and ACI-ASTM CA28MWV steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is ACI-ASTM CA28MWV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16 to 20
11
Fatigue Strength, MPa 350 to 480
470
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
1080
Tensile Strength: Yield (Proof), MPa 540 to 790
870

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
380
Maximum Temperature: Mechanical, °C 870
740
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
4.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
3.1
Embodied Energy, MJ/kg 39
44
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 20
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
1920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 36
38
Strength to Weight: Bending, points 26 to 28
30
Thermal Diffusivity, mm2/s 4.0
6.6
Thermal Shock Resistance, points 31 to 36
40

Alloy Composition

Carbon (C), % 0 to 0.060
0.2 to 0.28
Chromium (Cr), % 15 to 17
11 to 12.5
Iron (Fe), % 73.2 to 80.2
81.4 to 85.8
Manganese (Mn), % 0 to 1.5
0.5 to 1.0
Molybdenum (Mo), % 0.8 to 1.5
0.9 to 1.3
Nickel (Ni), % 4.0 to 6.0
0.5 to 1.0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3