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ASTM A387 Grade 21L Class 1 vs. ASTM A182 Grade F10

Both ASTM A387 grade 21L class 1 and ASTM A182 grade F10 are iron alloys. Both are furnished in the annealed condition. They have 73% 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 ASTM A387 grade 21L class 1 and the bottom bar is ASTM A182 grade F10.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
34
Fatigue Strength, MPa 160
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 310
420
Tensile Strength: Ultimate (UTS), MPa 500
630
Tensile Strength: Yield (Proof), MPa 230
230

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 480
600
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
15
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
17

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
18
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.8
3.6
Embodied Energy, MJ/kg 23
51
Embodied Water, L/kg 62
120

Common Calculations

PREN (Pitting Resistance) 6.4
8.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
170
Resilience: Unit (Modulus of Resilience), kJ/m3 140
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
21
Thermal Shock Resistance, points 14
18

Alloy Composition

Carbon (C), % 0 to 0.1
0.1 to 0.2
Chromium (Cr), % 2.8 to 3.3
7.0 to 9.0
Iron (Fe), % 94.4 to 96.1
66.5 to 72.4
Manganese (Mn), % 0.3 to 0.6
0.5 to 0.8
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
19 to 22
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 1.4
Sulfur (S), % 0 to 0.025
0 to 0.030