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EN 1.4508 Stainless Steel vs. AISI 329 Stainless Steel

Both EN 1.4508 stainless steel and AISI 329 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4508 stainless steel and the bottom bar is AISI 329 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
17
Fatigue Strength, MPa 210
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 570
710
Tensile Strength: Yield (Proof), MPa 260
540

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 20
16
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.0
3.1
Embodied Energy, MJ/kg 55
44
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 32
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
730
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
25
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 4.1
4.3
Thermal Shock Resistance, points 17
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 20
23 to 28
Iron (Fe), % 61.2 to 69.9
63.1 to 74
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 3.0 to 3.5
1.0 to 2.0
Nickel (Ni), % 9.0 to 12
2.0 to 5.0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030