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EN 1.4911 Stainless Steel vs. ACI-ASTM CA15 Steel

Both EN 1.4911 stainless steel and ACI-ASTM CA15 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 (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4911 stainless steel and the bottom bar is ACI-ASTM CA15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
21
Fatigue Strength, MPa 530
370
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 1070
700
Tensile Strength: Yield (Proof), MPa 970
570

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 14
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
820
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
25
Strength to Weight: Bending, points 30
23
Thermal Diffusivity, mm2/s 5.4
6.7
Thermal Shock Resistance, points 37
26

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0 to 0.15
Chromium (Cr), % 9.8 to 11.2
11.5 to 14
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
81.8 to 88.5
Manganese (Mn), % 0.3 to 1.3
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0 to 0.5
Nickel (Ni), % 0.2 to 1.2
0 to 1.0
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.1 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0