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EN 1.1121 Steel vs. N08028 Stainless Steel

Both EN 1.1121 steel and N08028 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.1121 steel and the bottom bar is N08028 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 28
45
Fatigue Strength, MPa 160
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Shear Strength, MPa 260
400
Tensile Strength: Ultimate (UTS), MPa 400
570
Tensile Strength: Yield (Proof), MPa 210
240

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
37
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.4
6.4
Embodied Energy, MJ/kg 18
89
Embodied Water, L/kg 45
240

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
210
Resilience: Unit (Modulus of Resilience), kJ/m3 110
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 14
19
Strength to Weight: Bending, points 15
19
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 13
12

Alloy Composition

Carbon (C), % 0.070 to 0.13
0 to 0.030
Chromium (Cr), % 0
26 to 28
Copper (Cu), % 0
0.6 to 1.4
Iron (Fe), % 98.8 to 99.63
29 to 40.4
Manganese (Mn), % 0.3 to 0.6
0 to 2.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
30 to 34
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.030