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EN 1.8527 Steel vs. ASTM A387 Grade 21L Class 1

Both EN 1.8527 steel and ASTM A387 grade 21L class 1 are iron alloys. They have a very high 98% of their average alloy composition in common. There are 32 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 EN 1.8527 steel and the bottom bar is ASTM A387 grade 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
21
Fatigue Strength, MPa 520
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 550
310
Tensile Strength: Ultimate (UTS), MPa 900
500
Tensile Strength: Yield (Proof), MPa 800
230

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Maximum Temperature: Mechanical, °C 490
480
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 41
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
4.1
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.7
1.8
Embodied Energy, MJ/kg 23
23
Embodied Water, L/kg 66
62

Common Calculations

PREN (Pitting Resistance) 5.7
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
84
Resilience: Unit (Modulus of Resilience), kJ/m3 1670
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32
18
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 26
14

Alloy Composition

Carbon (C), % 0.040 to 0.12
0 to 0.1
Chromium (Cr), % 3.7 to 4.3
2.8 to 3.3
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.2 to 95.1
94.4 to 96.1
Manganese (Mn), % 0.85 to 1.2
0.3 to 0.6
Molybdenum (Mo), % 0.4 to 0.6
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 0.035
0 to 0.025