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EN 1.4436 Stainless Steel vs. EN 1.4558 Stainless Steel

Both EN 1.4436 stainless steel and EN 1.4558 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 74% 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 1.4436 stainless steel and the bottom bar is EN 1.4558 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
39
Fatigue Strength, MPa 220
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 430
350
Tensile Strength: Ultimate (UTS), MPa 620
510
Tensile Strength: Yield (Proof), MPa 240
200

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
480
Maximum Temperature: Mechanical, °C 960
1100
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
31
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 3.9
5.5
Embodied Energy, MJ/kg 54
77
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 27
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
160
Resilience: Unit (Modulus of Resilience), kJ/m3 150
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 4.0
3.1
Thermal Shock Resistance, points 14
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.45
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
20 to 23
Iron (Fe), % 62.3 to 70.5
39.2 to 47.9
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 10.5 to 13
32 to 35
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0 to 0.6