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EN 1.7231 Steel vs. S20910 Stainless Steel

Both EN 1.7231 steel and S20910 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 28 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 EN 1.7231 steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 280
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 12
14 to 39
Fatigue Strength, MPa 360 to 500
310 to 460
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 790 to 930
780 to 940
Tensile Strength: Yield (Proof), MPa 570 to 800
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
1080
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
13
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
4.8
Embodied Energy, MJ/kg 20
68
Embodied Water, L/kg 51
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
460 to 1640
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 33
28 to 33
Strength to Weight: Bending, points 24 to 27
24 to 27
Thermal Diffusivity, mm2/s 12
3.6
Thermal Shock Resistance, points 23 to 27
17 to 21

Alloy Composition

Carbon (C), % 0.38 to 0.45
0 to 0.060
Chromium (Cr), % 0.8 to 1.2
20.5 to 23.5
Iron (Fe), % 96.4 to 98.1
52.1 to 62.1
Manganese (Mn), % 0.6 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0.15 to 0.3
1.5 to 3.0
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3

Comparable Variants