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EN 1.6579 Steel vs. S39274 Stainless Steel

Both EN 1.6579 steel and S39274 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 (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.6579 steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 290
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 11 to 14
17
Fatigue Strength, MPa 380 to 570
380
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 850 to 980
900
Tensile Strength: Yield (Proof), MPa 600 to 910
620

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.7
4.3
Embodied Energy, MJ/kg 22
60
Embodied Water, L/kg 56
180

Common Calculations

PREN (Pitting Resistance) 2.4
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
32
Strength to Weight: Bending, points 25 to 28
26
Thermal Diffusivity, mm2/s 11
4.2
Thermal Shock Resistance, points 25 to 29
25

Alloy Composition

Carbon (C), % 0.32 to 0.38
0 to 0.030
Chromium (Cr), % 1.4 to 1.7
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 94.2 to 96.1
57 to 65.6
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.35
2.5 to 3.5
Nickel (Ni), % 1.4 to 1.7
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5