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AISI 309S Stainless Steel vs. EN 1.4378 Stainless Steel

Both AISI 309S stainless steel and EN 1.4378 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
14 to 34
Fatigue Strength, MPa 210
340 to 550
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 400
510 to 680
Tensile Strength: Ultimate (UTS), MPa 580
760 to 1130
Tensile Strength: Yield (Proof), MPa 230
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1080
910
Melting Completion (Liquidus), °C 1420
1390
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 19
12
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.6
2.7
Embodied Energy, MJ/kg 51
39
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 23
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 140
470 to 2370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
28 to 41
Strength to Weight: Bending, points 20
24 to 31
Thermal Shock Resistance, points 13
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 22 to 24
17 to 19
Iron (Fe), % 58.1 to 66
61.2 to 69
Manganese (Mn), % 0 to 2.0
11.5 to 14.5
Nickel (Ni), % 12 to 15
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.045
0 to 0.060
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030