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EN 1.4107 Stainless Steel vs. EN 1.6781 Steel

Both EN 1.4107 stainless steel and EN 1.6781 steel are iron alloys. They have 89% of their average alloy composition in common. There are 30 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 1.4107 stainless steel and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18 to 21
17
Fatigue Strength, MPa 260 to 350
450
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 620 to 700
830
Tensile Strength: Yield (Proof), MPa 400 to 570
680

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 740
450
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 27
44
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.1
1.9
Embodied Energy, MJ/kg 30
25
Embodied Water, L/kg 100
60

Common Calculations

PREN (Pitting Resistance) 13
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
1220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 25
29
Strength to Weight: Bending, points 21 to 22
25
Thermal Diffusivity, mm2/s 7.2
12
Thermal Shock Resistance, points 22 to 25
24

Alloy Composition

Carbon (C), % 0 to 0.1
0.15 to 0.19
Chromium (Cr), % 11.5 to 12.5
1.3 to 1.8
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 83.8 to 87.2
92.6 to 94.6
Manganese (Mn), % 0.5 to 0.8
0.55 to 0.8
Molybdenum (Mo), % 0 to 0.5
0.45 to 0.6
Nickel (Ni), % 0.8 to 1.5
3.0 to 3.5
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.015
Vanadium (V), % 0 to 0.080
0