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EN 1.4372 Stainless Steel vs. ACI-ASTM CK20 Steel

Both EN 1.4372 stainless steel and ACI-ASTM CK20 steel are iron alloys. They have 75% of their average alloy composition in common. There are 32 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 1.4372 stainless steel and the bottom bar is ACI-ASTM CK20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 47
37
Fatigue Strength, MPa 330
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 790
530
Tensile Strength: Yield (Proof), MPa 350
260

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 880
1100
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
4.4
Embodied Energy, MJ/kg 38
62
Embodied Water, L/kg 140
190

Common Calculations

PREN (Pitting Resistance) 19
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
160
Resilience: Unit (Modulus of Resilience), kJ/m3 320
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
19
Strength to Weight: Bending, points 25
19
Thermal Diffusivity, mm2/s 4.0
3.7
Thermal Shock Resistance, points 17
13

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.2
Chromium (Cr), % 16 to 18
23 to 27
Iron (Fe), % 67.5 to 75
46.7 to 58
Manganese (Mn), % 5.5 to 7.5
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 3.5 to 5.5
19 to 22
Nitrogen (N), % 0.050 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.040