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EN 1.4938 Stainless Steel vs. ASTM Grade LC9 Steel

Both EN 1.4938 stainless steel and ASTM grade LC9 steel are iron alloys. They have 86% of their average alloy composition in common. There are 27 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 EN 1.4938 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, % 16 to 17
22
Fatigue Strength, MPa 390 to 520
420
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
660
Tensile Strength: Yield (Proof), MPa 640 to 870
590

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 750
430
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 11
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 10
8.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.3
2.3
Embodied Energy, MJ/kg 47
31
Embodied Water, L/kg 110
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
920
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 37
23
Strength to Weight: Bending, points 26 to 29
21
Thermal Shock Resistance, points 30 to 35
20

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.13
Chromium (Cr), % 11 to 12.5
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 80.5 to 84.8
87.4 to 91.5
Manganese (Mn), % 0.4 to 0.9
0 to 0.9
Molybdenum (Mo), % 1.5 to 2.0
0 to 0.2
Nickel (Ni), % 2.0 to 3.0
8.5 to 10
Nitrogen (N), % 0.020 to 0.040
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.045
Vanadium (V), % 0.25 to 0.4
0 to 0.030