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EN 1.1221 Steel vs. S34565 Stainless Steel

Both EN 1.1221 steel and S34565 stainless steel are iron alloys. They have 49% 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 1.1221 steel and the bottom bar is S34565 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 250
200
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 10 to 21
39
Fatigue Strength, MPa 240 to 340
400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Shear Strength, MPa 450 to 520
610
Tensile Strength: Ultimate (UTS), MPa 730 to 870
900
Tensile Strength: Yield (Proof), MPa 390 to 550
470

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
12
Thermal Expansion, µm/m-K 12
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
5.3
Embodied Energy, MJ/kg 19
73
Embodied Water, L/kg 47
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67 to 130
300
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 800
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 31
32
Strength to Weight: Bending, points 23 to 26
26
Thermal Diffusivity, mm2/s 13
3.2
Thermal Shock Resistance, points 23 to 28
22

Alloy Composition

Carbon (C), % 0.57 to 0.65
0 to 0.030
Chromium (Cr), % 0 to 0.4
23 to 25
Iron (Fe), % 97.1 to 98.8
43.2 to 51.6
Manganese (Mn), % 0.6 to 0.9
5.0 to 7.0
Molybdenum (Mo), % 0 to 0.1
4.0 to 5.0
Nickel (Ni), % 0 to 0.4
16 to 18
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0.4 to 0.6
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 0.010