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EN 1.7390 Steel vs. AISI 415 Stainless Steel

Both EN 1.7390 steel and AISI 415 stainless steel are iron alloys. Both are furnished in the normalized and tempered condition. They have 87% of their average alloy composition in common. There are 33 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 1.7390 steel and the bottom bar is AISI 415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
17
Fatigue Strength, MPa 310
430
Poisson's Ratio 0.29
0.28
Reduction in Area, % 50
50
Shear Modulus, GPa 74
76
Shear Strength, MPa 440
550
Tensile Strength: Ultimate (UTS), MPa 710
900
Tensile Strength: Yield (Proof), MPa 480
700

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 510
780
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
24
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
11
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
2.5
Embodied Energy, MJ/kg 23
35
Embodied Water, L/kg 69
110

Common Calculations

PREN (Pitting Resistance) 6.8
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
140
Resilience: Unit (Modulus of Resilience), kJ/m3 600
1250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
32
Strength to Weight: Bending, points 23
26
Thermal Diffusivity, mm2/s 11
6.4
Thermal Shock Resistance, points 20
33

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.050
Chromium (Cr), % 4.0 to 6.0
11.5 to 14
Iron (Fe), % 91.9 to 95.3
77.8 to 84
Manganese (Mn), % 0.3 to 0.8
0.5 to 1.0
Molybdenum (Mo), % 0.45 to 0.65
0.5 to 1.0
Nickel (Ni), % 0
3.5 to 5.5
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030