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AISI 430 Stainless Steel vs. AISI 434 Stainless Steel

Both AISI 430 stainless steel and AISI 434 stainless steel are iron alloys. Both are furnished in the annealed condition. Their average alloy composition is basically identical. There are 35 material properties with values for both materials. Properties with values for just one material (1, 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 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 24
24
Fatigue Strength, MPa 180
220
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 77
77
Shear Modulus, GPa 77
78
Shear Strength, MPa 320
330
Tensile Strength: Ultimate (UTS), MPa 500
520
Tensile Strength: Yield (Proof), MPa 260
320

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 870
880
Melting Completion (Liquidus), °C 1510
1510
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
9.5
Calomel Potential, mV -220
-230
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.1
2.4
Embodied Energy, MJ/kg 30
33
Embodied Water, L/kg 120
120

Common Calculations

PREN (Pitting Resistance) 17
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 6.7
6.7
Thermal Shock Resistance, points 18
19

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.12
Chromium (Cr), % 16 to 18
16 to 18
Iron (Fe), % 79.1 to 84
78.6 to 83.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0.75 to 1.3
Nickel (Ni), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030