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AISI 309 Stainless Steel vs. EN 1.4451 Stainless Steel

Both AISI 309 stainless steel and EN 1.4451 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 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 309 stainless steel and the bottom bar is EN 1.4451 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 210
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 47
25
Fatigue Strength, MPa 250 to 280
370
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
80
Tensile Strength: Ultimate (UTS), MPa 600 to 710
750
Tensile Strength: Yield (Proof), MPa 260 to 350
540

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 15
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
3.8
Embodied Energy, MJ/kg 51
53
Embodied Water, L/kg 170
190

Common Calculations

PREN (Pitting Resistance) 23
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
170
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
27
Strength to Weight: Bending, points 20 to 23
23
Thermal Diffusivity, mm2/s 4.3
4.5
Thermal Shock Resistance, points 14 to 16
16

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.030
Chromium (Cr), % 22 to 24
25 to 27
Copper (Cu), % 0
2.8 to 3.5
Iron (Fe), % 58 to 66
56.2 to 64.6
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 12 to 15
5.0 to 7.0
Nitrogen (N), % 0
0.12 to 0.22
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