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EN 1.7715 Steel vs. EN 1.4374 Stainless Steel

Both EN 1.7715 steel and EN 1.4374 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.7715 steel and the bottom bar is EN 1.4374 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
40
Fatigue Strength, MPa 240
340
Impact Strength: V-Notched Charpy, J 34
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 340
550
Tensile Strength: Ultimate (UTS), MPa 540
800
Tensile Strength: Yield (Proof), MPa 340
400

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
920
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1430
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
14
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.9
Embodied Energy, MJ/kg 30
42
Embodied Water, L/kg 52
150

Common Calculations

PREN (Pitting Resistance) 2.4
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
270
Resilience: Unit (Modulus of Resilience), kJ/m3 320
400
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
29
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 16
17

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.1 to 0.15
0.050 to 0.1
Chromium (Cr), % 0.3 to 0.6
17.5 to 18.5
Copper (Cu), % 0 to 0.3
0 to 0.4
Iron (Fe), % 96.5 to 98.3
63.5 to 67.9
Manganese (Mn), % 0.4 to 0.7
9.0 to 10
Molybdenum (Mo), % 0.5 to 0.7
0 to 0.5
Nickel (Ni), % 0 to 0.3
5.0 to 6.0
Nitrogen (N), % 0
0.25 to 0.32
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0.3 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0.22 to 0.28
0