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AISI 440C Stainless Steel vs. ASTM Grade LC9 Steel

Both AISI 440C stainless steel and ASTM grade LC9 steel are iron alloys. They have 82% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AISI 440C stainless steel and the bottom bar is ASTM grade LC9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 2.0 to 14
22
Fatigue Strength, MPa 260 to 840
420
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
660
Tensile Strength: Yield (Proof), MPa 450 to 1900
590

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Maximum Temperature: Mechanical, °C 870
430
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
10

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
8.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
2.3
Embodied Energy, MJ/kg 31
31
Embodied Water, L/kg 120
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 88
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 71
23
Strength to Weight: Bending, points 23 to 46
21
Thermal Shock Resistance, points 26 to 71
20

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.13
Chromium (Cr), % 16 to 18
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 78 to 83.1
87.4 to 91.5
Manganese (Mn), % 0 to 1.0
0 to 0.9
Molybdenum (Mo), % 0 to 0.75
0 to 0.2
Nickel (Ni), % 0
8.5 to 10
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.045
Vanadium (V), % 0
0 to 0.030