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S17400 Stainless Steel vs. AISI 415 Stainless Steel

Both S17400 stainless steel and AISI 415 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. 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 S17400 stainless steel and the bottom bar is AISI 415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 21
17
Fatigue Strength, MPa 380 to 670
430
Poisson's Ratio 0.28
0.28
Reduction in Area, % 40 to 62
50
Rockwell C Hardness 27 to 43
28
Shear Modulus, GPa 75
76
Shear Strength, MPa 570 to 830
550
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
900
Tensile Strength: Yield (Proof), MPa 580 to 1250
700

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 450
390
Maximum Temperature: Mechanical, °C 850
780
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
24
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 14
11
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.5
Embodied Energy, MJ/kg 39
35
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 16
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
140
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
1250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
32
Strength to Weight: Bending, points 27 to 35
26
Thermal Diffusivity, mm2/s 4.5
6.4
Thermal Shock Resistance, points 30 to 46
33

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.050
Chromium (Cr), % 15 to 17
11.5 to 14
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 70.4 to 78.9
77.8 to 84
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 0
0.5 to 1.0
Nickel (Ni), % 3.0 to 5.0
3.5 to 5.5
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030