SAE-AISI 5140 Steel vs. AWS BNi-5

SAE-AISI 5140 steel belongs to the iron alloys classification, while AWS BNi-5 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5140 steel and the bottom bar is AWS BNi-5.

SAE-AISI 5140 (SCr440, G51400) Chromium Steel AWS BNi-5 (N99650) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.29
Poisson's Ratio		0.29

Shear Modulus, GPa		73
Shear Modulus, GPa		72

Tensile Strength: Ultimate (UTS), MPa		560 to 970
Tensile Strength: Ultimate (UTS), MPa		470

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		470

Melting Completion (Liquidus), °C		1460
Melting Completion (Liquidus), °C		1140

Melting Onset (Solidus), °C		1420
Melting Onset (Solidus), °C		1080

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		510

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		2.1
Base Metal Price, % relative		55

Density, g/cm³		7.8
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		1.4
Embodied Carbon, kg CO₂/kg material		8.9

Embodied Energy, MJ/kg		19
Embodied Energy, MJ/kg		130

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

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		20 to 34
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		19 to 28
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		16 to 29
Thermal Shock Resistance, points		15

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.050

Boron (B), %		0
Boron (B), %		0 to 0.030

Carbon (C), %		0.38 to 0.43
Carbon (C), %		0 to 0.060

Chromium (Cr), %		0.7 to 0.9
Chromium (Cr), %		18.5 to 19.5

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Iron (Fe), %		97.3 to 98.1
Iron (Fe), %		0

Manganese (Mn), %		0.7 to 0.9
Manganese (Mn), %		0

Nickel (Ni), %		0
Nickel (Ni), %		69.1 to 71.8

Phosphorus (P), %		0 to 0.035
Phosphorus (P), %		0 to 0.020

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

Silicon (Si), %		0.15 to 0.35
Silicon (Si), %		9.8 to 10.5

Sulfur (S), %		0 to 0.040
Sulfur (S), %		0 to 0.020

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.050

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5