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EN 1.0303 Steel vs. EN 1.4031 Stainless Steel

Both EN 1.0303 steel and EN 1.4031 stainless steel are iron alloys. They have 85% 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 1.0303 steel and the bottom bar is EN 1.4031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 25
11 to 13
Fatigue Strength, MPa 150 to 230
220 to 400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 220 to 260
400 to 540
Tensile Strength: Ultimate (UTS), MPa 290 to 410
670 to 900
Tensile Strength: Yield (Proof), MPa 200 to 320
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
770
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
30
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
7.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.4
1.9
Embodied Energy, MJ/kg 18
27
Embodied Water, L/kg 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 94
77 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 270
380 to 1360
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 10 to 15
24 to 32
Strength to Weight: Bending, points 12 to 16
22 to 27
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 9.2 to 13
23 to 32

Alloy Composition

Aluminum (Al), % 0.020 to 0.060
0
Carbon (C), % 0.020 to 0.060
0.36 to 0.42
Chromium (Cr), % 0
12.5 to 14.5
Iron (Fe), % 99.335 to 99.71
83 to 87.1
Manganese (Mn), % 0.25 to 0.4
0 to 1.0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015