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EN 1.4508 Stainless Steel vs. EN 1.7378 Steel

Both EN 1.4508 stainless steel and EN 1.7378 steel are iron alloys. They have 70% of their average alloy composition in common. There are 31 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 1.4508 stainless steel and the bottom bar is EN 1.7378 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
17
Fatigue Strength, MPa 210
330
Impact Strength: V-Notched Charpy, J 90
38
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
74
Tensile Strength: Ultimate (UTS), MPa 570
700
Tensile Strength: Yield (Proof), MPa 260
490

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 1000
460
Melting Completion (Liquidus), °C 1450
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 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 20
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.0
2.3
Embodied Energy, MJ/kg 55
33
Embodied Water, L/kg 160
61

Common Calculations

PREN (Pitting Resistance) 32
5.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
25
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 4.1
10
Thermal Shock Resistance, points 17
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0015 to 0.0070
Carbon (C), % 0 to 0.030
0.050 to 0.1
Chromium (Cr), % 18 to 20
2.2 to 2.6
Iron (Fe), % 61.2 to 69.9
94.6 to 96.1
Manganese (Mn), % 0 to 1.5
0.3 to 0.7
Molybdenum (Mo), % 3.0 to 3.5
0.9 to 1.1
Nickel (Ni), % 9.0 to 12
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.5
0.15 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.050 to 0.1
Vanadium (V), % 0
0.2 to 0.3