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S17400 Stainless Steel vs. AISI 329 Stainless Steel

Both S17400 stainless steel and AISI 329 stainless steel are iron alloys. They have 89% 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 S17400 stainless steel and the bottom bar is AISI 329 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
17
Fatigue Strength, MPa 380 to 670
330
Poisson's Ratio 0.28
0.27
Rockwell C Hardness 27 to 43
24
Shear Modulus, GPa 75
80
Shear Strength, MPa 570 to 830
440
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
710
Tensile Strength: Yield (Proof), MPa 580 to 1250
540

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 450
450
Maximum Temperature: Mechanical, °C 850
1100
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 14
16
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
3.1
Embodied Energy, MJ/kg 39
44
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 16
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
730
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
25
Strength to Weight: Bending, points 27 to 35
23
Thermal Diffusivity, mm2/s 4.5
4.3
Thermal Shock Resistance, points 30 to 46
19

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 15 to 17
23 to 28
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 70.4 to 78.9
63.1 to 74
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 3.0 to 5.0
2.0 to 5.0
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030