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EN 1.4313 Stainless Steel vs. EN 1.6781 Steel

Both EN 1.4313 stainless steel and EN 1.6781 steel are iron alloys. They have 88% 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 1.4313 stainless steel and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 12 to 17
17
Fatigue Strength, MPa 340 to 510
450
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 750 to 1000
830
Tensile Strength: Yield (Proof), MPa 580 to 910
680

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 780
450
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
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 10
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.4
1.9
Embodied Energy, MJ/kg 34
25
Embodied Water, L/kg 110
60

Common Calculations

PREN (Pitting Resistance) 15
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 150
130
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 2100
1220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 36
29
Strength to Weight: Bending, points 23 to 28
25
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 27 to 36
24

Alloy Composition

Carbon (C), % 0 to 0.050
0.15 to 0.19
Chromium (Cr), % 12 to 14
1.3 to 1.8
Iron (Fe), % 78.5 to 84.2
92.6 to 94.6
Manganese (Mn), % 0 to 1.5
0.55 to 0.8
Molybdenum (Mo), % 0.3 to 0.7
0.45 to 0.6
Nickel (Ni), % 3.5 to 4.5
3.0 to 3.5
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 0.7
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015