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EN 1.4415 Stainless Steel vs. EN 1.7715 Steel

Both EN 1.4415 stainless steel and EN 1.7715 steel are iron alloys. They have 81% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4415 stainless steel and the bottom bar is EN 1.7715 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 20
21
Fatigue Strength, MPa 470 to 510
240
Impact Strength: V-Notched Charpy, J 91 to 110
34
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 520 to 570
340
Tensile Strength: Ultimate (UTS), MPa 830 to 930
540
Tensile Strength: Yield (Proof), MPa 730 to 840
340

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 790
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 19
40
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.9
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.6
2.2
Embodied Energy, MJ/kg 51
30
Embodied Water, L/kg 120
52

Common Calculations

PREN (Pitting Resistance) 19
2.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
99
Resilience: Unit (Modulus of Resilience), kJ/m3 1350 to 1790
320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 33
19
Strength to Weight: Bending, points 25 to 27
19
Thermal Diffusivity, mm2/s 5.1
11
Thermal Shock Resistance, points 30 to 34
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.030
0.1 to 0.15
Chromium (Cr), % 11.5 to 13.5
0.3 to 0.6
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 75.9 to 82.4
96.5 to 98.3
Manganese (Mn), % 0 to 0.5
0.4 to 0.7
Molybdenum (Mo), % 1.5 to 2.5
0.5 to 0.7
Nickel (Ni), % 4.5 to 6.5
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.1 to 0.5
0.22 to 0.28