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EN 1.6771 Steel vs. S39274 Stainless Steel

Both EN 1.6771 steel and S39274 stainless steel are iron alloys. They have 67% 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 1.6771 steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 350
270
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 8.0 to 8.7
17
Fatigue Strength, MPa 440 to 680
380
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 930 to 1180
900
Tensile Strength: Yield (Proof), MPa 740 to 1140
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 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.9
4.3
Embodied Energy, MJ/kg 25
60
Embodied Water, L/kg 58
180

Common Calculations

PREN (Pitting Resistance) 2.5
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 93
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1460 to 3450
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 41
32
Strength to Weight: Bending, points 27 to 31
26
Thermal Diffusivity, mm2/s 13
4.2
Thermal Shock Resistance, points 27 to 35
25

Alloy Composition

Carbon (C), % 0.27 to 0.33
0 to 0.030
Chromium (Cr), % 0.8 to 1.2
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 92.2 to 95
57 to 65.6
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.3 to 0.6
2.5 to 3.5
Nickel (Ni), % 3.0 to 4.0
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5