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EN 1.4028 Stainless Steel vs. ACI-ASTM CA15M Steel

Both EN 1.4028 stainless steel and ACI-ASTM CA15M steel are iron alloys. They have a very high 99% 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 1.4028 stainless steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
20
Fatigue Strength, MPa 230 to 400
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 660 to 930
690
Tensile Strength: Yield (Proof), MPa 390 to 730
510

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 760
760
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
27
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
7.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
2.1
Embodied Energy, MJ/kg 27
29
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 13
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
130
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 33
25
Strength to Weight: Bending, points 22 to 27
22
Thermal Diffusivity, mm2/s 8.1
7.2
Thermal Shock Resistance, points 23 to 32
25

Alloy Composition

Carbon (C), % 0.26 to 0.35
0 to 0.15
Chromium (Cr), % 12 to 14
11.5 to 14
Iron (Fe), % 83.1 to 87.7
82.1 to 88.4
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.65
Sulfur (S), % 0 to 0.015
0 to 0.040