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AISI 303 Stainless Steel vs. ASTM A209 Steel

Both AISI 303 stainless steel and ASTM A209 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 303 stainless steel and the bottom bar is ASTM A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 210
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40 to 51
34
Fatigue Strength, MPa 230 to 360
180 to 200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 430 to 470
280 to 310
Tensile Strength: Ultimate (UTS), MPa 600 to 690
420 to 460
Tensile Strength: Yield (Proof), MPa 230 to 420
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 930
410
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
50
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.0
1.5
Embodied Energy, MJ/kg 42
20
Embodied Water, L/kg 140
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 440
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 25
15 to 16
Strength to Weight: Bending, points 20 to 22
16 to 17
Thermal Diffusivity, mm2/s 4.4
13
Thermal Shock Resistance, points 13 to 15
12 to 14