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AISI 321 Stainless Steel vs. AWS E209

Both AISI 321 stainless steel and AWS E209 are iron alloys. They have 88% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AISI 321 stainless steel and the bottom bar is AWS E209.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 50
17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 590 to 690
770

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
14

Otherwise Unclassified Properties

Base Metal Price, % relative 16
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
4.4
Embodied Energy, MJ/kg 45
63
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 19
33
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
28
Strength to Weight: Bending, points 20 to 22
24
Thermal Shock Resistance, points 13 to 15
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.060
Chromium (Cr), % 17 to 19
20.5 to 24
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 65.3 to 74
51.5 to 64.3
Manganese (Mn), % 0 to 2.0
4.0 to 7.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 9.0 to 12
9.5 to 12
Nitrogen (N), % 0 to 0.1
0.1 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.7
0
Vanadium (V), % 0
0.1 to 0.3