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EN 1.3955 Stainless Steel vs. EN 1.7711 Steel

Both EN 1.3955 stainless steel and EN 1.7711 steel are iron alloys. They have 72% 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 1.3955 stainless steel and the bottom bar is EN 1.7711 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
16 to 22
Fatigue Strength, MPa 150
290 to 520
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 520
690 to 930
Tensile Strength: Yield (Proof), MPa 220
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 930
430
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
33
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
3.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.3
Embodied Energy, MJ/kg 45
32
Embodied Water, L/kg 140
54

Common Calculations

PREN (Pitting Resistance) 19
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
130 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 130
430 to 1690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
24 to 33
Strength to Weight: Bending, points 18
22 to 27
Thermal Diffusivity, mm2/s 4.1
8.9
Thermal Shock Resistance, points 15
24 to 32

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0 to 0.15
0.36 to 0.44
Chromium (Cr), % 16.5 to 18.5
0.9 to 1.2
Iron (Fe), % 65.5 to 73.5
96 to 97.5
Manganese (Mn), % 0 to 2.0
0.45 to 0.85
Molybdenum (Mo), % 0 to 0.75
0.5 to 0.65
Nickel (Ni), % 10 to 12
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.25 to 0.35