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EN 1.7715 Steel vs. EN 1.4409 Stainless Steel

Both EN 1.7715 steel and EN 1.4409 stainless steel are iron alloys. They have 68% 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 1.7715 steel and the bottom bar is EN 1.4409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
34
Fatigue Strength, MPa 240
180
Impact Strength: V-Notched Charpy, J 34
90
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 540
490
Tensile Strength: Yield (Proof), MPa 340
220

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
990
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
3.7
Embodied Energy, MJ/kg 30
52
Embodied Water, L/kg 52
160

Common Calculations

PREN (Pitting Resistance) 2.4
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
140
Resilience: Unit (Modulus of Resilience), kJ/m3 320
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 11
4.1
Thermal Shock Resistance, points 16
11

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.1 to 0.15
0 to 0.030
Chromium (Cr), % 0.3 to 0.6
18 to 20
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.5 to 98.3
61.7 to 71
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.5 to 0.7
2.0 to 2.5
Nickel (Ni), % 0 to 0.3
9.0 to 12
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.025
Vanadium (V), % 0.22 to 0.28
0