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EN 1.4931 Steel vs. AISI 314 Stainless Steel

Both EN 1.4931 steel and AISI 314 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 31 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 AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
45
Fatigue Strength, MPa 410
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 810
590
Tensile Strength: Yield (Proof), MPa 620
230

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 24
15
Thermal Expansion, µm/m-K 14
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.9
4.3
Embodied Energy, MJ/kg 42
62
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 16
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 970
130
Stiffness to Weight: Axial, points 14
14
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
3.9
Thermal Shock Resistance, points 22
14

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.25
Chromium (Cr), % 11.3 to 12.2
23 to 26
Iron (Fe), % 83.2 to 86.8
46.7 to 56.5
Manganese (Mn), % 0.5 to 0.8
0 to 2.0
Molybdenum (Mo), % 1.0 to 1.2
0
Nickel (Ni), % 0 to 1.0
19 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.4
1.5 to 3.0
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