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ASTM Grade LC9 Steel vs. AISI 422 Stainless Steel

Both ASTM grade LC9 steel and AISI 422 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM grade LC9 steel and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22
15 to 17
Fatigue Strength, MPa 420
410 to 500
Poisson's Ratio 0.29
0.28
Reduction in Area, % 34
34 to 40
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 660
910 to 1080
Tensile Strength: Yield (Proof), MPa 590
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 430
650
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1410
1470
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 10
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
11
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.3
3.1
Embodied Energy, MJ/kg 31
44
Embodied Water, L/kg 65
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 920
1140 to 1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
32 to 38
Strength to Weight: Bending, points 21
26 to 30
Thermal Shock Resistance, points 20
33 to 39

Alloy Composition

Carbon (C), % 0 to 0.13
0.2 to 0.25
Chromium (Cr), % 0 to 0.5
11 to 12.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 87.4 to 91.5
81.9 to 85.8
Manganese (Mn), % 0 to 0.9
0.5 to 1.0
Molybdenum (Mo), % 0 to 0.2
0.9 to 1.3
Nickel (Ni), % 8.5 to 10
0.5 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.045
0 to 0.025
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0 to 0.030
0.2 to 0.3