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ASTM A372 Grade E Steel vs. ASTM A369 Grade FP12

Both ASTM A372 grade E steel and ASTM A369 grade FP12 are iron alloys. Their average alloy composition is basically identical. 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 A372 grade E steel and the bottom bar is ASTM A369 grade FP12.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 280
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 22
20
Fatigue Strength, MPa 310 to 380
170
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 410 to 570
300
Tensile Strength: Ultimate (UTS), MPa 650 to 910
470
Tensile Strength: Yield (Proof), MPa 430 to 550
250

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
430
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 20
21
Embodied Water, L/kg 51
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 160
81
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 810
160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 32
17
Strength to Weight: Bending, points 21 to 27
17
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 19 to 27
14

Alloy Composition

Carbon (C), % 0.25 to 0.35
0.050 to 0.15
Chromium (Cr), % 0.8 to 1.2
0.8 to 1.3
Iron (Fe), % 97 to 98.3
96.8 to 98.4
Manganese (Mn), % 0.4 to 0.9
0.3 to 0.61
Molybdenum (Mo), % 0.15 to 0.25
0.44 to 0.65
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.025