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EN 1.0070 Steel vs. S43940 Stainless Steel

Both EN 1.0070 steel and S43940 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 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 1.0070 steel and the bottom bar is S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.1
21
Fatigue Strength, MPa 210
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 440
310
Tensile Strength: Ultimate (UTS), MPa 740
490
Tensile Strength: Yield (Proof), MPa 350
280

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
890
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 53
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.8
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.7
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 18
38
Embodied Water, L/kg 45
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
86
Resilience: Unit (Modulus of Resilience), kJ/m3 320
200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 14
6.8
Thermal Shock Resistance, points 23
18

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 18.5
Iron (Fe), % 99.876 to 100
78.2 to 82.1
Manganese (Mn), % 0
0 to 1.0
Niobium (Nb), % 0
0.3 to 0.6
Nitrogen (N), % 0 to 0.014
0
Phosphorus (P), % 0 to 0.055
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.055
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6