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AWS E318 vs. EN 1.4912 Stainless Steel

Both AWS E318 and EN 1.4912 stainless steel are iron alloys. They have a moderately high 94% 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 E318 and the bottom bar is EN 1.4912 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 620
610

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 23
20
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
3.8
Embodied Energy, MJ/kg 62
55
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 27
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 4.0
4.2
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.080
0.040 to 0.1
Chromium (Cr), % 17 to 20
17 to 19
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 57.6 to 69.5
64.6 to 73.6
Manganese (Mn), % 0.5 to 2.5
0 to 2.0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 11 to 14
9.0 to 12
Niobium (Nb), % 0 to 1.0
0.4 to 1.2
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