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AISI 415 Stainless Steel vs. S31100 Stainless Steel

Both AISI 415 stainless steel and S31100 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 34 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 AISI 415 stainless steel and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
4.5
Fatigue Strength, MPa 430
330
Poisson's Ratio 0.28
0.27
Rockwell C Hardness 28
28
Shear Modulus, GPa 76
79
Shear Strength, MPa 550
580
Tensile Strength: Ultimate (UTS), MPa 900
1000
Tensile Strength: Yield (Proof), MPa 700
710

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
470
Maximum Temperature: Mechanical, °C 780
1100
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 24
16
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
16
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.5
3.1
Embodied Energy, MJ/kg 35
44
Embodied Water, L/kg 110
170

Common Calculations

PREN (Pitting Resistance) 15
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
40
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
1240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
36
Strength to Weight: Bending, points 26
29
Thermal Diffusivity, mm2/s 6.4
4.2
Thermal Shock Resistance, points 33
28

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.060
Chromium (Cr), % 11.5 to 14
25 to 27
Iron (Fe), % 77.8 to 84
63.6 to 69
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0
Nickel (Ni), % 3.5 to 5.5
6.0 to 7.0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.25