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EN 1.0303 Steel vs. EN 1.4938 Stainless Steel

Both EN 1.0303 steel and EN 1.4938 stainless steel are iron alloys. They have 83% 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 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 25
16 to 17
Fatigue Strength, MPa 150 to 230
390 to 520
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 220 to 260
540 to 630
Tensile Strength: Ultimate (UTS), MPa 290 to 410
870 to 1030
Tensile Strength: Yield (Proof), MPa 200 to 320
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
750
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
30
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
10
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.3
Embodied Energy, MJ/kg 18
47
Embodied Water, L/kg 46
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 94
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 270
1050 to 1920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 10 to 15
31 to 37
Strength to Weight: Bending, points 12 to 16
26 to 29
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 9.2 to 13
30 to 35

Alloy Composition

Aluminum (Al), % 0.020 to 0.060
0
Carbon (C), % 0.020 to 0.060
0.080 to 0.15
Chromium (Cr), % 0
11 to 12.5
Iron (Fe), % 99.335 to 99.71
80.5 to 84.8
Manganese (Mn), % 0.25 to 0.4
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4