AWS E320 vs. SAE-AISI S4 Steel

Both AWS E320 and SAE-AISI S4 steel are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 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 AWS E320 and the bottom bar is SAE-AISI S4 steel.

AWS E320 (W88021) Weld Metal SAE-AISI S4 (T41904) Shock-Resisting Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		77
Shear Modulus, GPa		72

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		670 to 2140

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1410
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		1390

Specific Heat Capacity, J/kg-K		460
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		38
Base Metal Price, % relative		2.2

Density, g/cm³		8.2
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		6.5
Embodied Carbon, kg CO₂/kg material		2.0

Embodied Energy, MJ/kg		91
Embodied Energy, MJ/kg		29

Embodied Water, L/kg		220
Embodied Water, L/kg		48

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		21
Strength to Weight: Axial, points		24 to 77

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		22 to 48

Thermal Shock Resistance, points		16
Thermal Shock Resistance, points		20 to 65

Alloy Composition

Carbon (C), %		0 to 0.070
Carbon (C), %		0.5 to 0.65

Chromium (Cr), %		19 to 21
Chromium (Cr), %		0.1 to 0.5

Copper (Cu), %		3.0 to 4.0
Copper (Cu), %		0

Iron (Fe), %		31.8 to 43.5
Iron (Fe), %		95.2 to 96.9

Manganese (Mn), %		0.5 to 2.5
Manganese (Mn), %		0.6 to 1.0

Molybdenum (Mo), %		2.0 to 3.0
Molybdenum (Mo), %		0

Nickel (Ni), %		32 to 36
Nickel (Ni), %		0

Niobium (Nb), %		0 to 1.0
Niobium (Nb), %		0

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.6
Silicon (Si), %		1.8 to 2.3

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.030

Vanadium (V), %		0
Vanadium (V), %		0.15 to 0.35