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EN 1.4347 Stainless Steel vs. EN 1.6957 Steel

Both EN 1.4347 stainless steel and EN 1.6957 steel are iron alloys. They have 71% of their average alloy composition in common. There are 31 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 1.4347 stainless steel and the bottom bar is EN 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
18
Fatigue Strength, MPa 320
530
Impact Strength: V-Notched Charpy, J 34
71
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 660
930
Tensile Strength: Yield (Proof), MPa 480
780

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
450
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
5.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.1
2.1
Embodied Energy, MJ/kg 44
29
Embodied Water, L/kg 170
60

Common Calculations

PREN (Pitting Resistance) 28
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
160
Resilience: Unit (Modulus of Resilience), kJ/m3 570
1630
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
33
Strength to Weight: Bending, points 22
27
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 19
27

Alloy Composition

Carbon (C), % 0 to 0.050
0.22 to 0.32
Chromium (Cr), % 25 to 27
1.2 to 1.8
Iron (Fe), % 62.2 to 69.4
92.7 to 94.7
Manganese (Mn), % 0 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 0
0.25 to 0.45
Nickel (Ni), % 5.5 to 7.5
3.4 to 4.0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 1.5
0 to 0.15
Sulfur (S), % 0 to 0.020
0 to 0.0070
Vanadium (V), % 0
0.050 to 0.15