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ASTM A387 Grade 21L Class 1 vs. ASTM A209 Steel

Both ASTM A387 grade 21L class 1 and ASTM A209 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
34
Fatigue Strength, MPa 160
180 to 200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 310
280 to 310
Tensile Strength: Ultimate (UTS), MPa 500
420 to 460
Tensile Strength: Yield (Proof), MPa 230
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 480
410
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1430
1420 to 1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
50
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
2.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 23
20
Embodied Water, L/kg 62
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140
130 to 170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
15 to 16
Strength to Weight: Bending, points 18
16 to 17
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 14
12 to 14