S21603 Stainless Steel vs. AWS ENiCu-7

S21603 stainless steel belongs to the iron alloys classification, while AWS ENiCu-7 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is AWS ENiCu-7.

UNS S21603 (XM-18) Stainless Steel AWS ENiCu-7 (W84190) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		160

Elongation at Break, %		45
Elongation at Break, %		34

Poisson's Ratio		0.28
Poisson's Ratio		0.32

Shear Modulus, GPa		79
Shear Modulus, GPa		62

Tensile Strength: Ultimate (UTS), MPa		690
Tensile Strength: Ultimate (UTS), MPa		550

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1420
Melting Completion (Liquidus), °C		1270

Melting Onset (Solidus), °C		1380
Melting Onset (Solidus), °C		1230

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		430

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		17
Base Metal Price, % relative		50

Density, g/cm³		7.7
Density, g/cm³		8.7

Embodied Carbon, kg CO₂/kg material		3.6
Embodied Carbon, kg CO₂/kg material		8.0

Embodied Energy, MJ/kg		50
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		160
Embodied Water, L/kg		250

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		10

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		25
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		15
Thermal Shock Resistance, points		18

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.75

Carbon (C), %		0 to 0.030
Carbon (C), %		0 to 0.1

Chromium (Cr), %		17.5 to 22
Chromium (Cr), %		0

Copper (Cu), %		0
Copper (Cu), %		20.6 to 38

Iron (Fe), %		57.6 to 67.8
Iron (Fe), %		0 to 2.5

Manganese (Mn), %		7.5 to 9.0
Manganese (Mn), %		0 to 4.0

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

Nickel (Ni), %		5.0 to 7.0
Nickel (Ni), %		62 to 69

Nitrogen (N), %		0.25 to 0.5
Nitrogen (N), %		0

Phosphorus (P), %		0 to 0.045
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		0 to 0.75
Silicon (Si), %		0 to 1.5

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.015

Titanium (Ti), %		0
Titanium (Ti), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5