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AISI 309S Stainless Steel vs. EN 1.4371 Stainless Steel

Both AISI 309S stainless steel and EN 1.4371 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, 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 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 42
45 to 51
Fatigue Strength, MPa 210
290 to 340
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 400
520 to 540
Tensile Strength: Ultimate (UTS), MPa 580
740 to 750
Tensile Strength: Yield (Proof), MPa 230
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1080
880
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
2.6
Embodied Energy, MJ/kg 51
38
Embodied Water, L/kg 170
140

Common Calculations

PREN (Pitting Resistance) 23
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 140
250 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
27
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 13
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 22 to 24
16 to 17.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 58.1 to 66
66.7 to 74.4
Manganese (Mn), % 0 to 2.0
6.0 to 8.0
Nickel (Ni), % 12 to 15
3.5 to 5.5
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015