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EN 1.6781 Steel vs. EN 1.4313 Stainless Steel

Both EN 1.6781 steel and EN 1.4313 stainless 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 1.6781 steel and the bottom bar is EN 1.4313 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 450
780
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
10
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.9
2.4
Embodied Energy, MJ/kg 25
34
Embodied Water, L/kg 60
110

Common Calculations

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

Alloy Composition

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