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AWS ER70S-A1 vs. SAE-AISI 1146 Steel

Both AWS ER70S-A1 and SAE-AISI 1146 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AWS ER70S-A1 and the bottom bar is SAE-AISI 1146 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
13 to 17
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 590
670 to 730
Tensile Strength: Yield (Proof), MPa 450
360 to 630

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 50
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 48
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
93 to 97
Resilience: Unit (Modulus of Resilience), kJ/m3 540
340 to 1050
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
24 to 26
Strength to Weight: Bending, points 20
22 to 23
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 17
20 to 22

Alloy Composition

Carbon (C), % 0 to 0.12
0.42 to 0.49
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 96.1 to 99.3
98.3 to 98.8
Manganese (Mn), % 0 to 1.3
0.7 to 1.0
Molybdenum (Mo), % 0.4 to 0.65
0
Nickel (Ni), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.3 to 0.7
0
Sulfur (S), % 0 to 0.025
0.080 to 0.13
Residuals, % 0 to 0.5
0