MakeItFrom.com
Menu (ESC)

ASTM Grade LC9 Steel vs. ASTM A387 Grade 91 Class 2

Both ASTM grade LC9 steel and ASTM A387 grade 91 class 2 are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 28 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 ASTM grade LC9 steel and the bottom bar is ASTM A387 grade 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
20
Fatigue Strength, MPa 420
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 660
670
Tensile Strength: Yield (Proof), MPa 590
470

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 430
600
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.6
Embodied Energy, MJ/kg 31
37
Embodied Water, L/kg 65
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 920
580
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 21
22
Thermal Shock Resistance, points 20
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0 to 0.13
0.080 to 0.12
Chromium (Cr), % 0 to 0.5
8.0 to 9.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 87.4 to 91.5
87.3 to 90.3
Manganese (Mn), % 0 to 0.9
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.2
0.85 to 1.1
Nickel (Ni), % 8.5 to 10
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 0.45
0.2 to 0.5
Sulfur (S), % 0 to 0.045
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0 to 0.030
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010