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EN 1.3551 Steel vs. ASTM A387 Grade 12 Steel

Both EN 1.3551 steel and ASTM A387 grade 12 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.3551 steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 720
470 to 520

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 530
430
Melting Completion (Liquidus), °C 1490
1470
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 36
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.9
1.6
Embodied Energy, MJ/kg 71
21
Embodied Water, L/kg 82
51

Common Calculations

PREN (Pitting Resistance) 18
2.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
16 to 18
Strength to Weight: Bending, points 23
17 to 18
Thermal Diffusivity, mm2/s 9.8
12
Thermal Shock Resistance, points 21
14 to 15

Alloy Composition

Carbon (C), % 0.77 to 0.85
0.050 to 0.17
Chromium (Cr), % 3.9 to 4.3
0.8 to 1.2
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 88.8 to 91.1
97 to 98.2
Manganese (Mn), % 0.15 to 0.35
0.4 to 0.65
Molybdenum (Mo), % 4.0 to 4.5
0.45 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0.15 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0