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AISI 309H Stainless Steel vs. AISI 414 Stainless Steel

Both AISI 309H stainless steel and AISI 414 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 33 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 309H stainless steel and the bottom bar is AISI 414 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
17
Fatigue Strength, MPa 200
430 to 480
Poisson's Ratio 0.27
0.28
Reduction in Area, % 51
50
Shear Modulus, GPa 78
76
Shear Strength, MPa 400
550 to 590
Tensile Strength: Ultimate (UTS), MPa 580
900 to 960
Tensile Strength: Yield (Proof), MPa 230
700 to 790

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1080
750
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
8.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
2.1
Embodied Energy, MJ/kg 51
29
Embodied Water, L/kg 170
100

Common Calculations

PREN (Pitting Resistance) 23
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 130
1260 to 1590
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
32 to 34
Strength to Weight: Bending, points 20
27 to 28
Thermal Diffusivity, mm2/s 4.0
6.7
Thermal Shock Resistance, points 13
33 to 35

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.15
Chromium (Cr), % 22 to 24
11.5 to 13.5
Iron (Fe), % 58.1 to 66
81.8 to 87.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 12 to 15
1.3 to 2.5
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