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EN 1.4938 Stainless Steel vs. EN 1.7367 Steel

Both EN 1.4938 stainless steel and EN 1.7367 steel are iron alloys. They have a moderately high 94% 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 1.4938 stainless steel and the bottom bar is EN 1.7367 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 16 to 17
18
Fatigue Strength, MPa 390 to 520
310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
670
Tensile Strength: Yield (Proof), MPa 640 to 870
460

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 750
600
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 30
26
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.6
Embodied Energy, MJ/kg 47
37
Embodied Water, L/kg 110
88

Common Calculations

PREN (Pitting Resistance) 18
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
560
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 37
24
Strength to Weight: Bending, points 26 to 29
22
Thermal Diffusivity, mm2/s 8.1
6.9
Thermal Shock Resistance, points 30 to 35
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0.080 to 0.15
0.080 to 0.12
Chromium (Cr), % 11 to 12.5
8.0 to 9.5
Iron (Fe), % 80.5 to 84.8
87.3 to 90.3
Manganese (Mn), % 0.4 to 0.9
0.3 to 0.6
Molybdenum (Mo), % 1.5 to 2.0
0.85 to 1.1
Nickel (Ni), % 2.0 to 3.0
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0.020 to 0.040
0.030 to 0.070
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0.25 to 0.4
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010