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S42030 Stainless Steel vs. AISI 429 Stainless Steel

Both S42030 stainless steel and AISI 429 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 95% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S42030 stainless steel and the bottom bar is AISI 429 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16
25
Fatigue Strength, MPa 250
180
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 410
300
Tensile Strength: Ultimate (UTS), MPa 670
480
Tensile Strength: Yield (Proof), MPa 410
260

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
400
Maximum Temperature: Mechanical, °C 780
810
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 28
26
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.0
Embodied Energy, MJ/kg 34
28
Embodied Water, L/kg 110
110

Common Calculations

PREN (Pitting Resistance) 20
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
99
Resilience: Unit (Modulus of Resilience), kJ/m3 440
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 7.7
6.9
Thermal Shock Resistance, points 24
17

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.12
Chromium (Cr), % 12 to 14
14 to 16
Copper (Cu), % 2.0 to 3.0
0
Iron (Fe), % 77.6 to 85
81.8 to 86
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.0 to 3.0
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