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EN 1.4615 Stainless Steel vs. EN 1.4558 Stainless Steel

Both EN 1.4615 stainless steel and EN 1.4558 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 65% 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 1.4615 stainless steel and the bottom bar is EN 1.4558 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 50
39
Fatigue Strength, MPa 190
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 360
350
Tensile Strength: Ultimate (UTS), MPa 500
510
Tensile Strength: Yield (Proof), MPa 200
200

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 400
480
Maximum Temperature: Mechanical, °C 840
1100
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
5.5
Embodied Energy, MJ/kg 40
77
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 17
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
160
Resilience: Unit (Modulus of Resilience), kJ/m3 99
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 4.1
3.1
Thermal Shock Resistance, points 11
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.45
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 14 to 16
20 to 23
Copper (Cu), % 2.0 to 4.0
0
Iron (Fe), % 63.1 to 72.5
39.2 to 47.9
Manganese (Mn), % 7.0 to 9.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.8
0
Nickel (Ni), % 4.5 to 6.0
32 to 35
Nitrogen (N), % 0.020 to 0.060
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0
0 to 0.6