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S31727 Stainless Steel vs. ASTM Grade LC9 Steel

Both S31727 stainless steel and ASTM grade LC9 steel are iron alloys. They have 68% of their average alloy composition in common. There are 27 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 S31727 stainless steel and the bottom bar is ASTM grade LC9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
22
Fatigue Strength, MPa 240
420
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
34
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 630
660
Tensile Strength: Yield (Proof), MPa 270
590

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Maximum Temperature: Mechanical, °C 1010
430
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
8.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
2.3
Embodied Energy, MJ/kg 64
31
Embodied Water, L/kg 180
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
140
Resilience: Unit (Modulus of Resilience), kJ/m3 190
920
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
23
Strength to Weight: Bending, points 20
21
Thermal Shock Resistance, points 14
20

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.13
Chromium (Cr), % 17.5 to 19
0 to 0.5
Copper (Cu), % 2.8 to 4.0
0 to 0.3
Iron (Fe), % 53.7 to 61.3
87.4 to 91.5
Manganese (Mn), % 0 to 1.0
0 to 0.9
Molybdenum (Mo), % 3.8 to 4.5
0 to 0.2
Nickel (Ni), % 14.5 to 16.5
8.5 to 10
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.045
Vanadium (V), % 0
0 to 0.030