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EN 1.4911 Stainless Steel vs. EN 1.6771 Steel

Both EN 1.4911 stainless steel and EN 1.6771 steel are iron alloys. They have 83% 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 1.4911 stainless steel and the bottom bar is EN 1.6771 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
8.0 to 8.7
Fatigue Strength, MPa 530
440 to 680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 1070
930 to 1180
Tensile Strength: Yield (Proof), MPa 970
740 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 700
440
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 20
46
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 20
5.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.4
1.9
Embodied Energy, MJ/kg 49
25
Embodied Water, L/kg 130
58

Common Calculations

PREN (Pitting Resistance) 14
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
75 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 2410
1460 to 3450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 38
33 to 41
Strength to Weight: Bending, points 30
27 to 31
Thermal Diffusivity, mm2/s 5.4
13
Thermal Shock Resistance, points 37
27 to 35

Alloy Composition

Boron (B), % 0.0050 to 0.015
0
Carbon (C), % 0.050 to 0.12
0.27 to 0.33
Chromium (Cr), % 9.8 to 11.2
0.8 to 1.2
Cobalt (Co), % 5.0 to 7.0
0
Iron (Fe), % 75.7 to 83.8
92.2 to 95
Manganese (Mn), % 0.3 to 1.3
0.6 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0.3 to 0.6
Nickel (Ni), % 0.2 to 1.2
3.0 to 4.0
Niobium (Nb), % 0.2 to 0.5
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.1 to 0.8
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0 to 0.7
0
Vanadium (V), % 0.1 to 0.4
0