AISI 431 Stainless Steel vs. AWS BNi-5

AISI 431 stainless 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 (16, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is AWS BNi-5.

AISI 431 (S43100) Stainless Steel AWS BNi-5 (N99650) Filler Metal

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		890 to 1380
Tensile Strength: Ultimate (UTS), MPa		470

Thermal Properties

Latent Heat of Fusion, J/g		280
Latent Heat of Fusion, J/g		470

Melting Completion (Liquidus), °C		1510
Melting Completion (Liquidus), °C		1140

Melting Onset (Solidus), °C		1450
Melting Onset (Solidus), °C		1080

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		510

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

Otherwise Unclassified Properties

Base Metal Price, % relative		9.0
Base Metal Price, % relative		55

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

Embodied Carbon, kg CO₂/kg material		2.2
Embodied Carbon, kg CO₂/kg material		8.9

Embodied Energy, MJ/kg		31
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		120
Embodied Water, L/kg		260

Common Calculations

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

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

Strength to Weight: Axial, points		32 to 50
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		27 to 36
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		28 to 43
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 to 0.2
Carbon (C), %		0 to 0.060

Chromium (Cr), %		15 to 17
Chromium (Cr), %		18.5 to 19.5

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

Iron (Fe), %		78.2 to 83.8
Iron (Fe), %		0

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0

Nickel (Ni), %		1.3 to 2.5
Nickel (Ni), %		69.1 to 71.8

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.020

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

Silicon (Si), %		0 to 1.0
Silicon (Si), %		9.8 to 10.5

Sulfur (S), %		0 to 0.030
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