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S40975 Stainless Steel vs. SAE-AISI 1548 Steel

Both S40975 stainless steel and SAE-AISI 1548 steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 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 S40975 stainless steel and the bottom bar is SAE-AISI 1548 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
220 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
11 to 16
Fatigue Strength, MPa 210
270 to 430
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 290
440 to 500
Tensile Strength: Ultimate (UTS), MPa 460
730 to 830
Tensile Strength: Yield (Proof), MPa 310
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 710
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
19
Embodied Water, L/kg 95
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
79 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 250
470 to 1280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
26 to 30
Strength to Weight: Bending, points 17
23 to 25
Thermal Diffusivity, mm2/s 7.0
14
Thermal Shock Resistance, points 17
23 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.44 to 0.52
Chromium (Cr), % 10.5 to 11.7
0
Iron (Fe), % 84.4 to 89
98 to 98.5
Manganese (Mn), % 0 to 1.0
1.1 to 1.4
Nickel (Ni), % 0.5 to 1.0
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050
Titanium (Ti), % 0 to 0.75
0