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EN 1.4931 Steel vs. S42030 Stainless Steel

Both EN 1.4931 steel and S42030 stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4931 steel and the bottom bar is S42030 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
16
Fatigue Strength, MPa 410
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 810
670
Tensile Strength: Yield (Proof), MPa 620
410

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
780
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 24
28
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.5
Embodied Energy, MJ/kg 42
34
Embodied Water, L/kg 100
110

Common Calculations

PREN (Pitting Resistance) 16
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
92
Resilience: Unit (Modulus of Resilience), kJ/m3 970
440
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 6.5
7.7
Thermal Shock Resistance, points 22
24

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.3
Chromium (Cr), % 11.3 to 12.2
12 to 14
Copper (Cu), % 0
2.0 to 3.0
Iron (Fe), % 83.2 to 86.8
77.6 to 85
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 1.0 to 1.2
1.0 to 3.0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
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