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EN 1.7703 Steel vs. ASTM A387 Grade 11 Steel

Both EN 1.7703 steel and ASTM A387 grade 11 steel 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 1.7703 steel and the bottom bar is ASTM A387 grade 11 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
25
Fatigue Strength, MPa 320 to 340
200 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 420 to 430
320 to 390
Tensile Strength: Ultimate (UTS), MPa 670 to 690
500 to 600
Tensile Strength: Yield (Proof), MPa 460 to 500
270 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 460
430
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.2
2.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.6
Embodied Energy, MJ/kg 35
21
Embodied Water, L/kg 61
53

Common Calculations

PREN (Pitting Resistance) 5.6
3.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
100 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
200 to 320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
18 to 21
Strength to Weight: Bending, points 22
18 to 20
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 19 to 20
15 to 18

Alloy Composition

Carbon (C), % 0.11 to 0.15
0.050 to 0.17
Chromium (Cr), % 2.0 to 2.5
1.0 to 1.5
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 94.6 to 96.4
96.2 to 97.6
Manganese (Mn), % 0.3 to 0.6
0.4 to 0.65
Molybdenum (Mo), % 0.9 to 1.1
0.45 to 0.65
Nickel (Ni), % 0 to 0.25
0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0 to 0.1
0.5 to 0.8
Sulfur (S), % 0 to 0.0050
0 to 0.025
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.25 to 0.35
0

Comparable Variants