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ACI-ASTM CK20 Steel vs. EN 1.4361 Stainless Steel

Both ACI-ASTM CK20 steel and EN 1.4361 stainless steel are iron alloys. They have 87% 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 ACI-ASTM CK20 steel and the bottom bar is EN 1.4361 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 37
43
Fatigue Strength, MPa 220
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Tensile Strength: Ultimate (UTS), MPa 530
630
Tensile Strength: Yield (Proof), MPa 260
250

Thermal Properties

Latent Heat of Fusion, J/g 310
350
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
940
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1430
1330
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 14
14
Thermal Expansion, µm/m-K 15
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 25
19
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 4.4
3.6
Embodied Energy, MJ/kg 62
52
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 26
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
220
Resilience: Unit (Modulus of Resilience), kJ/m3 170
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
23
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 3.7
3.7
Thermal Shock Resistance, points 13
15

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.015
Chromium (Cr), % 23 to 27
16.5 to 18.5
Iron (Fe), % 46.7 to 58
58.7 to 65.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.2
Nickel (Ni), % 19 to 22
14 to 16
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
3.7 to 4.5
Sulfur (S), % 0 to 0.040
0 to 0.010