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AWS E430 vs. AISI 403 Stainless Steel

Both AWS E430 and AISI 403 stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS E430 and the bottom bar is AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
16 to 25
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 500
530 to 780

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
28
Thermal Expansion, µm/m-K 14
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
6.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.9
Embodied Energy, MJ/kg 31
27
Embodied Water, L/kg 120
99

Common Calculations

PREN (Pitting Resistance) 18
12
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19 to 28
Strength to Weight: Bending, points 18
19 to 24
Thermal Diffusivity, mm2/s 6.7
7.6
Thermal Shock Resistance, points 13
20 to 29

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 15 to 18
11.5 to 13
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 77.8 to 85
84.7 to 88.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 0 to 0.6
0 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.9
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030