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EN 1.4401 Stainless Steel vs. EN 1.7378 Steel

Both EN 1.4401 stainless steel and EN 1.7378 steel are iron alloys. They have 71% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4401 stainless steel and the bottom bar is EN 1.7378 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 14 to 40
17
Fatigue Strength, MPa 200 to 320
330
Impact Strength: V-Notched Charpy, J 91 to 94
38
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
74
Shear Strength, MPa 410 to 550
430
Tensile Strength: Ultimate (UTS), MPa 600 to 900
700
Tensile Strength: Yield (Proof), MPa 230 to 570
490

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 950
460
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
39
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.3
Embodied Energy, MJ/kg 52
33
Embodied Water, L/kg 150
61

Common Calculations

PREN (Pitting Resistance) 26
5.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 32
25
Strength to Weight: Bending, points 20 to 26
22
Thermal Diffusivity, mm2/s 4.0
10
Thermal Shock Resistance, points 13 to 20
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0015 to 0.0070
Carbon (C), % 0 to 0.070
0.050 to 0.1
Chromium (Cr), % 16.5 to 18.5
2.2 to 2.6
Iron (Fe), % 62.8 to 71.5
94.6 to 96.1
Manganese (Mn), % 0 to 2.0
0.3 to 0.7
Molybdenum (Mo), % 2.0 to 2.5
0.9 to 1.1
Nickel (Ni), % 10 to 13
0
Nitrogen (N), % 0 to 0.1
0 to 0.010
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 1.0
0.15 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0.050 to 0.1
Vanadium (V), % 0
0.2 to 0.3