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S40977 Stainless Steel vs. SAE-AISI 1044 Steel

Both S40977 stainless steel and SAE-AISI 1044 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 S40977 stainless steel and the bottom bar is SAE-AISI 1044 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
18
Fatigue Strength, MPa 200
230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Shear Strength, MPa 320
380
Tensile Strength: Ultimate (UTS), MPa 510
620
Tensile Strength: Yield (Proof), MPa 310
340

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 720
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.4
Embodied Energy, MJ/kg 27
18
Embodied Water, L/kg 97
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
94
Resilience: Unit (Modulus of Resilience), kJ/m3 250
320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 6.7
14
Thermal Shock Resistance, points 18
20

Alloy Composition

Carbon (C), % 0 to 0.030
0.43 to 0.5
Chromium (Cr), % 10.5 to 12.5
0
Iron (Fe), % 83.9 to 89.2
98.8 to 99.27
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Nickel (Ni), % 0.3 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 0.015
0 to 0.050