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EN 1.0303 Steel vs. S82121 Stainless Steel

Both EN 1.0303 steel and S82121 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 31 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 S82121 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 84 to 120
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 25
28
Fatigue Strength, MPa 150 to 230
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
78
Shear Strength, MPa 220 to 260
470
Tensile Strength: Ultimate (UTS), MPa 290 to 410
730
Tensile Strength: Yield (Proof), MPa 200 to 320
510

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1020
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 53
15
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 18
40
Embodied Water, L/kg 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 94
180
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 270
660
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 10 to 15
26
Strength to Weight: Bending, points 12 to 16
23
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 9.2 to 13
20

Alloy Composition

Aluminum (Al), % 0.020 to 0.060
0
Carbon (C), % 0.020 to 0.060
0 to 0.035
Chromium (Cr), % 0
21 to 23
Copper (Cu), % 0
0.2 to 1.2
Iron (Fe), % 99.335 to 99.71
66.7 to 75.4
Manganese (Mn), % 0.25 to 0.4
1.0 to 2.5
Molybdenum (Mo), % 0
0.3 to 1.3
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.15 to 0.25
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 0.010