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EN 1.6958 Steel vs. AWS E90C-B9

Both EN 1.6958 steel and AWS E90C-B9 are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is AWS E90C-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
18
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 1140
710
Tensile Strength: Yield (Proof), MPa 1070
460

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
25
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.6
Embodied Energy, MJ/kg 27
37
Embodied Water, L/kg 60
91

Common Calculations

PREN (Pitting Resistance) 2.9
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 40
25
Strength to Weight: Bending, points 31
23
Thermal Diffusivity, mm2/s 13
6.9
Thermal Shock Resistance, points 39
20

Alloy Composition


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Aluminum (Al), % 0.0050 to 0.050
0 to 0.040
Carbon (C), % 0.25 to 0.3
0.080 to 0.13
Chromium (Cr), % 1.2 to 1.7
8.0 to 10.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 92.6 to 94.5
84.4 to 90.9
Manganese (Mn), % 0.2 to 0.5
0 to 1.2
Molybdenum (Mo), % 0.35 to 0.55
0.85 to 1.2
Nickel (Ni), % 3.3 to 3.8
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0.15 to 0.3
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0 to 0.12
0.15 to 0.3
Residuals, % 0
0 to 0.5