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ASTM A387 Grade 21L Class 1 vs. EN 1.3553 Steel

Both ASTM A387 grade 21L class 1 and EN 1.3553 steel are iron alloys. They have 87% 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 ASTM A387 grade 21L class 1 and the bottom bar is EN 1.3553 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 500
720

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 480
540
Melting Completion (Liquidus), °C 1470
1620
Melting Onset (Solidus), °C 1430
1570
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 41
24
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
10
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
11

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
24
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 1.8
8.5
Embodied Energy, MJ/kg 23
130
Embodied Water, L/kg 62
96

Common Calculations

PREN (Pitting Resistance) 6.4
31
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 11
6.4
Thermal Shock Resistance, points 14
21

Alloy Composition

Carbon (C), % 0 to 0.1
0.78 to 0.86
Chromium (Cr), % 2.8 to 3.3
3.9 to 4.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 94.4 to 96.1
80.7 to 83.7
Manganese (Mn), % 0.3 to 0.6
0 to 0.4
Molybdenum (Mo), % 0.9 to 1.1
4.7 to 5.2
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.015
Tungsten (W), % 0
6.0 to 6.7
Vanadium (V), % 0
1.7 to 2.0