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ASTM A387 Grade 21L Class 1 vs. ASTM A148 Cast Steel

Both ASTM A387 grade 21L class 1 and ASTM A148 cast steel are iron alloys. 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 ASTM A387 grade 21L class 1 and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190 to 390
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
5.7 to 25
Fatigue Strength, MPa 160
280 to 670
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 500
630 to 1300
Tensile Strength: Yield (Proof), MPa 230
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 480
400 to 430
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
37 to 47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.3 to 7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.3 to 8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
2.3 to 3.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.5 to 1.7
Embodied Energy, MJ/kg 23
20 to 22
Embodied Water, L/kg 62
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 140
400 to 3570
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
22 to 46
Strength to Weight: Bending, points 18
21 to 34
Thermal Diffusivity, mm2/s 11
9.9 to 13
Thermal Shock Resistance, points 14
18 to 38