MakeItFrom.com
Menu (ESC)

EN 1.7711 Steel vs. ASTM A387 Grade 9 Steel

Both EN 1.7711 steel and ASTM A387 grade 9 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.7711 steel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 280
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16 to 22
20 to 21
Fatigue Strength, MPa 290 to 520
160 to 240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 440 to 570
310 to 380
Tensile Strength: Ultimate (UTS), MPa 690 to 930
500 to 600
Tensile Strength: Yield (Proof), MPa 400 to 800
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 430
600
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 33
26
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
2.1
Embodied Energy, MJ/kg 32
28
Embodied Water, L/kg 54
87

Common Calculations

PREN (Pitting Resistance) 2.9
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 140
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1690
140 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 33
18 to 21
Strength to Weight: Bending, points 22 to 27
18 to 20
Thermal Diffusivity, mm2/s 8.9
6.9
Thermal Shock Resistance, points 24 to 32
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.015
0
Carbon (C), % 0.36 to 0.44
0 to 0.15
Chromium (Cr), % 0.9 to 1.2
8.0 to 10
Iron (Fe), % 96 to 97.5
87.1 to 90.8
Manganese (Mn), % 0.45 to 0.85
0.3 to 0.6
Molybdenum (Mo), % 0.5 to 0.65
0.9 to 1.1
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.25 to 0.35
0 to 0.040

Comparable Variants