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EN 1.4415 Stainless Steel vs. EN 1.7390 Steel

Both EN 1.4415 stainless steel and EN 1.7390 steel are iron alloys. They have 85% 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 1.4415 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 to 20
16
Fatigue Strength, MPa 470 to 510
310
Impact Strength: V-Notched Charpy, J 91 to 110
46
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 520 to 570
440
Tensile Strength: Ultimate (UTS), MPa 830 to 930
710
Tensile Strength: Yield (Proof), MPa 730 to 840
480

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 790
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 19
40
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
4.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.7
Embodied Energy, MJ/kg 51
23
Embodied Water, L/kg 120
69

Common Calculations

PREN (Pitting Resistance) 19
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1350 to 1790
600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 33
25
Strength to Weight: Bending, points 25 to 27
23
Thermal Diffusivity, mm2/s 5.1
11
Thermal Shock Resistance, points 30 to 34
20

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.18
Chromium (Cr), % 11.5 to 13.5
4.0 to 6.0
Iron (Fe), % 75.9 to 82.4
91.9 to 95.3
Manganese (Mn), % 0 to 0.5
0.3 to 0.8
Molybdenum (Mo), % 1.5 to 2.5
0.45 to 0.65
Nickel (Ni), % 4.5 to 6.5
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 0.015
0 to 0.015
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.1 to 0.5
0