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EN 1.4446 Stainless Steel vs. EN 1.4594 Stainless Steel

Both EN 1.4446 stainless steel and EN 1.4594 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 31 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 1.4446 stainless steel and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
11 to 17
Fatigue Strength, MPa 160
490 to 620
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 490
1020 to 1170
Tensile Strength: Yield (Proof), MPa 240
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 980
820
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 22
15
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.5
3.2
Embodied Energy, MJ/kg 60
45
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 34
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1660 to 3320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
36 to 41
Strength to Weight: Bending, points 17
29 to 31
Thermal Diffusivity, mm2/s 3.6
4.4
Thermal Shock Resistance, points 11
34 to 39

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.070
Chromium (Cr), % 16.5 to 18.5
13 to 15
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 59.7 to 66.9
72.6 to 79.5
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 4.0 to 4.5
1.2 to 2.0
Nickel (Ni), % 12.5 to 14.5
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015