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EN 1.7725 Steel vs. ASTM Grade LC1 Steel

Both EN 1.7725 steel and ASTM grade LC1 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7725 steel and the bottom bar is ASTM grade LC1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
27
Fatigue Strength, MPa 390 to 550
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
540
Tensile Strength: Yield (Proof), MPa 610 to 860
270

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
410
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
50
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
2.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 24
20
Embodied Water, L/kg 54
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
200
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29 to 35
19
Strength to Weight: Bending, points 25 to 28
19
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 24 to 29
16

Alloy Composition

Carbon (C), % 0.27 to 0.34
0 to 0.25
Chromium (Cr), % 1.3 to 1.7
0
Iron (Fe), % 95.7 to 97.5
97.6 to 99.05
Manganese (Mn), % 0.6 to 1.0
0.5 to 0.8
Molybdenum (Mo), % 0.3 to 0.5
0.45 to 0.65
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.045
Vanadium (V), % 0.050 to 0.15
0