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S40977 Stainless Steel vs. S20161 Stainless Steel

Both S40977 stainless steel and S20161 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S40977 stainless steel and the bottom bar is S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
46
Fatigue Strength, MPa 200
360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 320
690
Tensile Strength: Ultimate (UTS), MPa 510
980
Tensile Strength: Yield (Proof), MPa 310
390

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 720
870
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
12
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.9
2.7
Embodied Energy, MJ/kg 27
39
Embodied Water, L/kg 97
130

Common Calculations

PREN (Pitting Resistance) 12
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
360
Resilience: Unit (Modulus of Resilience), kJ/m3 250
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 18
36
Strength to Weight: Bending, points 18
29
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 18
22

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 10.5 to 12.5
15 to 18
Iron (Fe), % 83.9 to 89.2
65.6 to 73.9
Manganese (Mn), % 0 to 1.5
4.0 to 6.0
Nickel (Ni), % 0.3 to 1.0
4.0 to 6.0
Nitrogen (N), % 0 to 0.030
0.080 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
3.0 to 4.0
Sulfur (S), % 0 to 0.015
0 to 0.040