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EN 1.3553 Steel vs. ASTM A387 Grade 21 Steel

Both EN 1.3553 steel and ASTM A387 grade 21 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 EN 1.3553 steel and the bottom bar is ASTM A387 grade 21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
74
Tensile Strength: Ultimate (UTS), MPa 720
500 to 590

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 31
6.4
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 24
18 to 21
Strength to Weight: Bending, points 21
18 to 20
Thermal Diffusivity, mm2/s 6.4
11
Thermal Shock Resistance, points 21
14 to 17

Alloy Composition

Carbon (C), % 0.78 to 0.86
0.050 to 0.15
Chromium (Cr), % 3.9 to 4.3
2.8 to 3.3
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 80.7 to 83.7
94.4 to 96
Manganese (Mn), % 0 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 4.7 to 5.2
0.9 to 1.1
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 6.0 to 6.7
0
Vanadium (V), % 1.7 to 2.0
0