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S17400 Stainless Steel vs. AISI 305 Stainless Steel

Both S17400 stainless steel and AISI 305 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S17400 stainless steel and the bottom bar is AISI 305 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
34 to 45
Fatigue Strength, MPa 380 to 670
210 to 280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 570 to 830
400 to 470
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
580 to 710
Tensile Strength: Yield (Proof), MPa 580 to 1250
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 850
540
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 14
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
3.2
Embodied Energy, MJ/kg 39
45
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 16
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
200 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
130 to 320
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
20 to 25
Strength to Weight: Bending, points 27 to 35
20 to 23
Thermal Diffusivity, mm2/s 4.5
4.2
Thermal Shock Resistance, points 30 to 46
13 to 15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.12
Chromium (Cr), % 15 to 17
17 to 19
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 70.4 to 78.9
65.1 to 72.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 3.0 to 5.0
10.5 to 13
Niobium (Nb), % 0.15 to 0.45
0
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