MakeItFrom.com
Menu (ESC)

AISI 430 Stainless Steel vs. AISI 309 Stainless Steel

Both AISI 430 stainless steel and AISI 309 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 430 stainless steel and the bottom bar is AISI 309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 24
34 to 47
Fatigue Strength, MPa 180
250 to 280
Poisson's Ratio 0.28
0.27
Rockwell B Hardness 77
84
Shear Modulus, GPa 77
78
Shear Strength, MPa 320
420 to 470
Tensile Strength: Ultimate (UTS), MPa 500
600 to 710
Tensile Strength: Yield (Proof), MPa 260
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 870
980
Melting Completion (Liquidus), °C 1510
1450
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
16
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
19
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.1
3.6
Embodied Energy, MJ/kg 30
51
Embodied Water, L/kg 120
170

Common Calculations

PREN (Pitting Resistance) 17
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 170
170 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
21 to 25
Strength to Weight: Bending, points 18
20 to 23
Thermal Diffusivity, mm2/s 6.7
4.3
Thermal Shock Resistance, points 18
14 to 16

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.2
Chromium (Cr), % 16 to 18
22 to 24
Iron (Fe), % 79.1 to 84
58 to 66
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0 to 0.75
12 to 15
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030