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ASTM A387 Grade 11 Steel vs. EN 1.7711 Steel

Both ASTM A387 grade 11 steel and EN 1.7711 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is ASTM A387 grade 11 steel and the bottom bar is EN 1.7711 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
210 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
16 to 22
Fatigue Strength, MPa 200 to 250
290 to 520
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 320 to 390
440 to 570
Tensile Strength: Ultimate (UTS), MPa 500 to 600
690 to 930
Tensile Strength: Yield (Proof), MPa 270 to 350
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 430
430
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
33
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
3.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
2.3
Embodied Energy, MJ/kg 21
32
Embodied Water, L/kg 53
54

Common Calculations

PREN (Pitting Resistance) 3.1
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 130
130 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 320
430 to 1690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
24 to 33
Strength to Weight: Bending, points 18 to 20
22 to 27
Thermal Diffusivity, mm2/s 11
8.9
Thermal Shock Resistance, points 15 to 18
24 to 32

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0.050 to 0.17
0.36 to 0.44
Chromium (Cr), % 1.0 to 1.5
0.9 to 1.2
Iron (Fe), % 96.2 to 97.6
96 to 97.5
Manganese (Mn), % 0.4 to 0.65
0.45 to 0.85
Molybdenum (Mo), % 0.45 to 0.65
0.5 to 0.65
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.5 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.030
Vanadium (V), % 0
0.25 to 0.35

Comparable Variants