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ASTM A285 Carbon Steel vs. ASTM A387 Grade 21L Class 1

Both ASTM A285 carbon steel and ASTM A387 grade 21L class 1 are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A285 carbon steel and the bottom bar is ASTM A387 grade 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 130
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 30 to 34
21
Fatigue Strength, MPa 150 to 180
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 250 to 290
310
Tensile Strength: Ultimate (UTS), MPa 380 to 450
500
Tensile Strength: Yield (Proof), MPa 190 to 230
230

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 400
480
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420 to 1430
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
41
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
4.1
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.8
Embodied Energy, MJ/kg 18
23
Embodied Water, L/kg 46
62

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
84
Resilience: Unit (Modulus of Resilience), kJ/m3 94 to 150
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13 to 16
18
Strength to Weight: Bending, points 15 to 17
18
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 12 to 14
14