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EN 1.4931 Steel vs. S20910 Stainless Steel

Both EN 1.4931 steel and S20910 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4931 steel and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
230 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
14 to 39
Fatigue Strength, MPa 410
310 to 460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 810
780 to 940
Tensile Strength: Yield (Proof), MPa 620
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 600
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 24
13
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
4.8
Embodied Energy, MJ/kg 42
68
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 16
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 970
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
28 to 33
Strength to Weight: Bending, points 25
24 to 27
Thermal Diffusivity, mm2/s 6.5
3.6
Thermal Shock Resistance, points 22
17 to 21

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.060
Chromium (Cr), % 11.3 to 12.2
20.5 to 23.5
Iron (Fe), % 83.2 to 86.8
52.1 to 62.1
Manganese (Mn), % 0.5 to 0.8
4.0 to 6.0
Molybdenum (Mo), % 1.0 to 1.2
1.5 to 3.0
Nickel (Ni), % 0 to 1.0
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 0.030
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0.1 to 0.3