S21603 Stainless Steel vs. AWS E430

Both S21603 stainless steel and AWS E430 are iron alloys. They have 81% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is AWS E430.

UNS S21603 (XM-18) Stainless Steel AWS E430 (W43010) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		45
Elongation at Break, %		23

Poisson's Ratio		0.28
Poisson's Ratio		0.28

Shear Modulus, GPa		79
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		690
Tensile Strength: Ultimate (UTS), MPa		500

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		1440

Melting Onset (Solidus), °C		1380
Melting Onset (Solidus), °C		1400

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

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		17
Base Metal Price, % relative		9.0

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

Embodied Carbon, kg CO₂/kg material		3.6
Embodied Carbon, kg CO₂/kg material		2.2

Embodied Energy, MJ/kg		50
Embodied Energy, MJ/kg		31

Embodied Water, L/kg		160
Embodied Water, L/kg		120

Common Calculations

PREN (Pitting Resistance)		34
PREN (Pitting Resistance)		18

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

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

Strength to Weight: Axial, points		25
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		18

Thermal Shock Resistance, points		15
Thermal Shock Resistance, points		13

Alloy Composition

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

Chromium (Cr), %		17.5 to 22
Chromium (Cr), %		15 to 18

Copper (Cu), %		0
Copper (Cu), %		0 to 0.75

Iron (Fe), %		57.6 to 67.8
Iron (Fe), %		77.8 to 85

Manganese (Mn), %		7.5 to 9.0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		2.0 to 3.0
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		5.0 to 7.0
Nickel (Ni), %		0 to 0.6

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

Phosphorus (P), %		0 to 0.045
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.75
Silicon (Si), %		0 to 0.9

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