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EN 1.4958 Stainless Steel vs. AWS E308LMo

Both EN 1.4958 stainless steel and AWS E308LMo are iron alloys. They have 77% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4958 stainless steel and the bottom bar is AWS E308LMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 630
580

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 15
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
19
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.3
3.8
Embodied Energy, MJ/kg 75
53
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 21
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 3.2
4.2
Thermal Shock Resistance, points 15
15

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0 to 0.040
Chromium (Cr), % 19 to 22
18 to 21
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0 to 0.75
Iron (Fe), % 41.1 to 50.6
59.6 to 70.5
Manganese (Mn), % 0 to 1.5
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 30 to 32.5
9.0 to 12
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0.2 to 0.5
0