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AISI 309S Stainless Steel vs. EN 1.4008 Stainless Steel

Both AISI 309S stainless steel and EN 1.4008 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 309S stainless steel and the bottom bar is EN 1.4008 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 42
17
Fatigue Strength, MPa 210
300
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 580
670
Tensile Strength: Yield (Proof), MPa 230
500

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1080
760
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
8.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
2.1
Embodied Energy, MJ/kg 51
30
Embodied Water, L/kg 170
100

Common Calculations

PREN (Pitting Resistance) 23
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
630
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
24
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 4.0
6.7
Thermal Shock Resistance, points 13
23

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 22 to 24
12 to 13.5
Iron (Fe), % 58.1 to 66
81.8 to 86.8
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0.2 to 0.5
Nickel (Ni), % 12 to 15
1.0 to 2.0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025