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EN 1.4418 Stainless Steel vs. EN 1.7711 Steel

Both EN 1.4418 stainless steel and EN 1.7711 steel are iron alloys. They have 79% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 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, % 16 to 20
16 to 22
Fatigue Strength, MPa 350 to 480
290 to 520
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 530 to 620
440 to 570
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
690 to 930
Tensile Strength: Yield (Proof), MPa 540 to 790
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
430
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
33
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
3.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.3
Embodied Energy, MJ/kg 39
32
Embodied Water, L/kg 130
54

Common Calculations

PREN (Pitting Resistance) 20
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
130 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
430 to 1690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 36
24 to 33
Strength to Weight: Bending, points 26 to 28
22 to 27
Thermal Diffusivity, mm2/s 4.0
8.9
Thermal Shock Resistance, points 31 to 36
24 to 32

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0 to 0.060
0.36 to 0.44
Chromium (Cr), % 15 to 17
0.9 to 1.2
Iron (Fe), % 73.2 to 80.2
96 to 97.5
Manganese (Mn), % 0 to 1.5
0.45 to 0.85
Molybdenum (Mo), % 0.8 to 1.5
0.5 to 0.65
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.7
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0
0.25 to 0.35

Comparable Variants