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EN 1.4658 Stainless Steel vs. EN 1.1121 Steel

Both EN 1.4658 stainless steel and EN 1.1121 steel are iron alloys. They have 58% of their average alloy composition in common. 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 1.4658 stainless steel and the bottom bar is EN 1.1121 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
120
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 28
28
Fatigue Strength, MPa 530
160
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 580
260
Tensile Strength: Ultimate (UTS), MPa 900
400
Tensile Strength: Yield (Proof), MPa 730
210

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
53
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.4
Embodied Energy, MJ/kg 61
18
Embodied Water, L/kg 200
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
93
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
110
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
14
Strength to Weight: Bending, points 26
15
Thermal Diffusivity, mm2/s 4.3
14
Thermal Shock Resistance, points 24
13

Alloy Composition

Carbon (C), % 0 to 0.030
0.070 to 0.13
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
98.8 to 99.63
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035