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EN 1.4931 Steel vs. S44800 Stainless Steel

Both EN 1.4931 steel and S44800 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 31 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 1.4931 steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
190
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
23
Fatigue Strength, MPa 410
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
82
Tensile Strength: Ultimate (UTS), MPa 810
590
Tensile Strength: Yield (Proof), MPa 620
450

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
17
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
19
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
3.8
Embodied Energy, MJ/kg 42
52
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 16
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 970
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 25
20
Thermal Diffusivity, mm2/s 6.5
4.6
Thermal Shock Resistance, points 22
19

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.010
Chromium (Cr), % 11.3 to 12.2
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 83.2 to 86.8
62.6 to 66.5
Manganese (Mn), % 0.5 to 0.8
0 to 0.3
Molybdenum (Mo), % 1.0 to 1.2
3.5 to 4.2
Nickel (Ni), % 0 to 1.0
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.2
Sulfur (S), % 0 to 0.020
0 to 0.020
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0