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ASTM Grade LC9 Steel vs. S40930 Stainless Steel

Both ASTM grade LC9 steel and S40930 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM grade LC9 steel and the bottom bar is S40930 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
23
Fatigue Strength, MPa 420
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 660
430
Tensile Strength: Yield (Proof), MPa 590
190

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 430
710
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 10
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
8.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.3
Embodied Energy, MJ/kg 31
32
Embodied Water, L/kg 65
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
80
Resilience: Unit (Modulus of Resilience), kJ/m3 920
94
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
16
Strength to Weight: Bending, points 21
16
Thermal Shock Resistance, points 20
16

Alloy Composition

Carbon (C), % 0 to 0.13
0 to 0.030
Chromium (Cr), % 0 to 0.5
10.5 to 11.7
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 87.4 to 91.5
84.7 to 89.4
Manganese (Mn), % 0 to 0.9
0 to 1.0
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 8.5 to 10
0 to 0.5
Niobium (Nb), % 0
0.080 to 0.75
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.045
0 to 0.020
Titanium (Ti), % 0
0.050 to 0.2
Vanadium (V), % 0 to 0.030
0