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EN 1.4658 Stainless Steel vs. EN 1.7231 Steel

Both EN 1.4658 stainless steel and EN 1.7231 steel are iron alloys. They have 60% 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 1.7231 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
240 to 280
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 28
11 to 12
Fatigue Strength, MPa 530
360 to 500
Impact Strength: V-Notched Charpy, J 110
28 to 30
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 900
790 to 930
Tensile Strength: Yield (Proof), MPa 730
570 to 800

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
420
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
46
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.5
Embodied Energy, MJ/kg 61
20
Embodied Water, L/kg 200
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
87 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
870 to 1700
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
28 to 33
Strength to Weight: Bending, points 26
24 to 27
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 24
23 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.38 to 0.45
Chromium (Cr), % 26 to 29
0.8 to 1.2
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
96.4 to 98.1
Manganese (Mn), % 0 to 1.5
0.6 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
0.15 to 0.3
Nickel (Ni), % 5.5 to 9.5
0
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030