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EN 1.4423 Stainless Steel vs. EN 1.7390 Steel

Both EN 1.4423 stainless steel and EN 1.7390 steel are iron alloys. They have 83% of their average alloy composition in common. There are 32 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 1.4423 stainless steel and the bottom bar is EN 1.7390 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
16
Fatigue Strength, MPa 380
310
Impact Strength: V-Notched Charpy, J 110
46
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 520
440
Tensile Strength: Ultimate (UTS), MPa 850
710
Tensile Strength: Yield (Proof), MPa 630
480

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 780
510
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
40
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
4.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.7
Embodied Energy, MJ/kg 43
23
Embodied Water, L/kg 120
69

Common Calculations

PREN (Pitting Resistance) 21
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
25
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.3
11
Thermal Shock Resistance, points 31
20

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.18
Chromium (Cr), % 11 to 13
4.0 to 6.0
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 73.8 to 80.5
91.9 to 95.3
Manganese (Mn), % 0 to 2.0
0.3 to 0.8
Molybdenum (Mo), % 2.3 to 2.8
0.45 to 0.65
Nickel (Ni), % 6.0 to 7.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.0030
0 to 0.015