EN 1.8151 Steel vs. AWS E33-31

Both EN 1.8151 steel and AWS E33-31 are iron alloys. They have a modest 32% 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 (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.8151 steel and the bottom bar is AWS E33-31.

EN 1.8151 (45SiCrV6-2) Steel AWS E33-31 (W33310) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.29
Poisson's Ratio		0.27

Shear Modulus, GPa		72
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		670 to 1940
Tensile Strength: Ultimate (UTS), MPa		810

Thermal Properties

Latent Heat of Fusion, J/g		270
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1440
Melting Completion (Liquidus), °C		1380

Melting Onset (Solidus), °C		1400
Melting Onset (Solidus), °C		1330

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

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

Otherwise Unclassified Properties

Base Metal Price, % relative		2.2
Base Metal Price, % relative		36

Density, g/cm³		7.7
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		1.8
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		25
Embodied Energy, MJ/kg		86

Embodied Water, L/kg		49
Embodied Water, L/kg		260

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

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

Strength to Weight: Axial, points		24 to 70
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		22 to 45
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		20 to 58
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0.4 to 0.5
Carbon (C), %		0 to 0.030

Chromium (Cr), %		0.4 to 0.8
Chromium (Cr), %		31 to 35

Copper (Cu), %		0
Copper (Cu), %		0.4 to 0.8

Iron (Fe), %		95.9 to 97.2
Iron (Fe), %		24.7 to 34.8

Manganese (Mn), %		0.6 to 0.9
Manganese (Mn), %		2.5 to 4.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.0 to 2.0

Nickel (Ni), %		0
Nickel (Ni), %		30 to 32

Nitrogen (N), %		0
Nitrogen (N), %		0.3 to 0.5

Phosphorus (P), %		0 to 0.025
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		1.3 to 1.7
Silicon (Si), %		0 to 0.9

Sulfur (S), %		0 to 0.025
Sulfur (S), %		0 to 0.010

Vanadium (V), %		0.1 to 0.2
Vanadium (V), %		0