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EN 1.4446 Stainless Steel vs. EN 1.4029 Stainless Steel

Both EN 1.4446 stainless steel and EN 1.4029 stainless steel are iron alloys. They have 78% 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 1.4029 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
10 to 20
Fatigue Strength, MPa 160
270 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 490
700 to 930
Tensile Strength: Yield (Proof), MPa 240
410 to 740

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 980
750
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
30
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 22
7.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.5
2.0
Embodied Energy, MJ/kg 60
28
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 34
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
89 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140
440 to 1410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
25 to 33
Strength to Weight: Bending, points 17
23 to 27
Thermal Diffusivity, mm2/s 3.6
8.1
Thermal Shock Resistance, points 11
26 to 34

Alloy Composition

Carbon (C), % 0 to 0.030
0.25 to 0.32
Chromium (Cr), % 16.5 to 18.5
12 to 13.5
Iron (Fe), % 59.7 to 66.9
82.8 to 87.6
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 4.0 to 4.5
0 to 0.6
Nickel (Ni), % 12.5 to 14.5
0
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 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.25