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EN 1.6579 Steel vs. AISI 314 Stainless Steel

Both EN 1.6579 steel and AISI 314 stainless steel are iron alloys. They have 56% 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 1.6579 steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 290
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
45
Fatigue Strength, MPa 380 to 570
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 850 to 980
590
Tensile Strength: Yield (Proof), MPa 600 to 910
230

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 39
15
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
4.3
Embodied Energy, MJ/kg 22
62
Embodied Water, L/kg 56
190

Common Calculations

PREN (Pitting Resistance) 2.4
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
210
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
21
Strength to Weight: Bending, points 25 to 28
20
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 25 to 29
14

Alloy Composition

Carbon (C), % 0.32 to 0.38
0 to 0.25
Chromium (Cr), % 1.4 to 1.7
23 to 26
Iron (Fe), % 94.2 to 96.1
46.7 to 56.5
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.35
0
Nickel (Ni), % 1.4 to 1.7
19 to 22
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.6
1.5 to 3.0
Sulfur (S), % 0 to 0.030
0 to 0.030