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ASTM Grade LCA Steel vs. ASTM A27 Cast Steel

Both ASTM grade LCA steel and ASTM A27 cast steel are iron alloys.

For each property being compared, the top bar is ASTM grade LCA steel and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
25 to 27
Fatigue Strength, MPa 170
170 to 230
Poisson's Ratio 0.29
0.29
Reduction in Area, % 40
34 to 40
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 500
460 to 550
Tensile Strength: Yield (Proof), MPa 230
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49
52
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 46
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
140 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
16 to 20
Strength to Weight: Bending, points 18
17 to 19
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 16
15 to 18