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AWS E309 vs. EN 1.4301 Stainless Steel

Both AWS E309 and EN 1.4301 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E309 and the bottom bar is EN 1.4301 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
14 to 46
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 620
610 to 900

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 20
15
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.7
3.0
Embodied Energy, MJ/kg 52
43
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 25
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
22 to 32
Strength to Weight: Bending, points 21
20 to 27
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 16
14 to 20

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.070
Chromium (Cr), % 22 to 25
17.5 to 19.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 55.8 to 65.5
66.8 to 74.5
Manganese (Mn), % 0.5 to 2.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 12 to 14
8.0 to 10.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015