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SAE-AISI 1137 Steel vs. AWS ER70S-A1

Both SAE-AISI 1137 steel and AWS ER70S-A1 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 SAE-AISI 1137 steel and the bottom bar is AWS ER70S-A1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
22
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 700 to 760
590
Tensile Strength: Yield (Proof), MPa 370 to 650
450

Thermal Properties

Latent Heat of Fusion, J/g 250
260
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 51
50
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 48
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81 to 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 1130
540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25 to 27
21
Strength to Weight: Bending, points 22 to 24
20
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 21 to 23
17

Alloy Composition

Carbon (C), % 0.32 to 0.39
0 to 0.12
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 97.8 to 98.3
96.1 to 99.3
Manganese (Mn), % 1.4 to 1.7
0 to 1.3
Molybdenum (Mo), % 0
0.4 to 0.65
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0.3 to 0.7
Sulfur (S), % 0.080 to 0.13
0 to 0.025
Residuals, % 0
0 to 0.5