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ASTM A387 Grade 12 Steel vs. EN 1.3963 Alloy

Both ASTM A387 grade 12 steel and EN 1.3963 alloy are iron alloys. They have 64% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is EN 1.3963 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
29
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
72
Shear Strength, MPa 300 to 330
290
Tensile Strength: Ultimate (UTS), MPa 470 to 520
440
Tensile Strength: Yield (Proof), MPa 260 to 310
310

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 13
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
25
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.6
4.8
Embodied Energy, MJ/kg 21
66
Embodied Water, L/kg 51
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 250
260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 16 to 18
15
Strength to Weight: Bending, points 17 to 18
16
Thermal Shock Resistance, points 14 to 15
110

Alloy Composition

Carbon (C), % 0.050 to 0.17
0 to 0.050
Chromium (Cr), % 0.8 to 1.2
0 to 0.25
Iron (Fe), % 97 to 98.2
60.5 to 64.9
Manganese (Mn), % 0.4 to 0.65
0 to 0.5
Molybdenum (Mo), % 0.45 to 0.6
0 to 1.0
Nickel (Ni), % 0
35 to 37
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.15 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.025
0.1 to 0.2