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S44735 Stainless Steel vs. EN 1.1121 Steel

Both S44735 stainless steel and EN 1.1121 steel are iron alloys. Both are furnished in the annealed condition. They have 65% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S44735 stainless steel and the bottom bar is EN 1.1121 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
120
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 21
28
Fatigue Strength, MPa 300
160
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 82
73
Shear Strength, MPa 390
260
Tensile Strength: Ultimate (UTS), MPa 630
400
Tensile Strength: Yield (Proof), MPa 460
210

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 21
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.4
Embodied Energy, MJ/kg 61
18
Embodied Water, L/kg 180
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
93
Resilience: Unit (Modulus of Resilience), kJ/m3 520
110
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 23
14
Strength to Weight: Bending, points 21
15
Thermal Shock Resistance, points 20
13

Alloy Composition

Carbon (C), % 0 to 0.030
0.070 to 0.13
Chromium (Cr), % 28 to 30
0
Iron (Fe), % 60.7 to 68.4
98.8 to 99.63
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 3.6 to 4.2
0
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Titanium (Ti), % 0.2 to 1.0
0