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EN 1.3940 Stainless Steel vs. EN 1.7233 Steel

Both EN 1.3940 stainless steel and EN 1.7233 steel are iron alloys. They have 70% of their average alloy composition in common. There are 30 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 1.3940 stainless steel and the bottom bar is EN 1.7233 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
18 to 23
Fatigue Strength, MPa 190
270 to 530
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
700 to 960
Tensile Strength: Yield (Proof), MPa 240
380 to 780

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 930
430
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
3.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.6
Embodied Energy, MJ/kg 47
21
Embodied Water, L/kg 150
53

Common Calculations

PREN (Pitting Resistance) 20
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
110 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 150
380 to 1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
25 to 34
Strength to Weight: Bending, points 19
22 to 28
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 16
21 to 28

Alloy Composition

Carbon (C), % 0 to 0.030
0.39 to 0.45
Chromium (Cr), % 16.5 to 18.5
1.2 to 1.5
Iron (Fe), % 64.2 to 71.4
96.2 to 97.5
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 0
0.5 to 0.7
Nickel (Ni), % 12 to 14
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.035