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EN 1.1221 Steel vs. EN 1.4905 Stainless Steel

Both EN 1.1221 steel and EN 1.4905 stainless steel are iron alloys. They have 89% 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 1.1221 steel and the bottom bar is EN 1.4905 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10 to 21
19
Fatigue Strength, MPa 240 to 340
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 450 to 520
460
Tensile Strength: Ultimate (UTS), MPa 730 to 870
740
Tensile Strength: Yield (Proof), MPa 390 to 550
510

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
660
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1410
1440
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
26
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
9.5
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
2.8
Embodied Energy, MJ/kg 19
40
Embodied Water, L/kg 47
90

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67 to 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 800
680
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 31
26
Strength to Weight: Bending, points 23 to 26
23
Thermal Diffusivity, mm2/s 13
7.0
Thermal Shock Resistance, points 23 to 28
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Boron (B), % 0
0.00050 to 0.0050
Carbon (C), % 0.57 to 0.65
0.090 to 0.13
Chromium (Cr), % 0 to 0.4
8.5 to 9.5
Iron (Fe), % 97.1 to 98.8
86.2 to 88.8
Manganese (Mn), % 0.6 to 0.9
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.1
0.9 to 1.1
Nickel (Ni), % 0 to 0.4
0.1 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.050 to 0.090
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
0.1 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.010
Tungsten (W), % 0
0.9 to 1.1
Vanadium (V), % 0
0.18 to 0.25