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AISI 440B Stainless Steel vs. SAE-AISI 1137 Steel

Both AISI 440B stainless steel and SAE-AISI 1137 steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 440B stainless steel and the bottom bar is SAE-AISI 1137 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 3.0 to 18
11 to 17
Fatigue Strength, MPa 260 to 850
250 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 460 to 1110
430 to 460
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
700 to 760
Tensile Strength: Yield (Proof), MPa 430 to 1860
370 to 650

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
400
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
51
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
19
Embodied Water, L/kg 120
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
81 to 100
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 70
25 to 27
Strength to Weight: Bending, points 24 to 45
22 to 24
Thermal Diffusivity, mm2/s 6.1
14
Thermal Shock Resistance, points 27 to 70
21 to 23

Alloy Composition

Carbon (C), % 0.75 to 1.0
0.32 to 0.39
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 78.2 to 83.3
97.8 to 98.3
Manganese (Mn), % 0 to 1.0
1.4 to 1.7
Molybdenum (Mo), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0.080 to 0.13