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EN 1.6771 Steel vs. ASTM Grade HF Steel

Both EN 1.6771 steel and ASTM grade HF steel are iron alloys. They have 73% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.6771 steel and the bottom bar is ASTM grade HF steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 350
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0 to 8.7
29
Fatigue Strength, MPa 440 to 680
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 930 to 1180
550
Tensile Strength: Yield (Proof), MPa 740 to 1140
270

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1000
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.9
3.2
Embodied Energy, MJ/kg 25
46
Embodied Water, L/kg 58
150

Common Calculations

PREN (Pitting Resistance) 2.5
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 93
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1460 to 3450
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 41
20
Strength to Weight: Bending, points 27 to 31
19
Thermal Diffusivity, mm2/s 13
4.2
Thermal Shock Resistance, points 27 to 35
12

Alloy Composition

Carbon (C), % 0.27 to 0.33
0.2 to 0.4
Chromium (Cr), % 0.8 to 1.2
18 to 23
Iron (Fe), % 92.2 to 95
60 to 73.8
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
0 to 0.5
Nickel (Ni), % 3.0 to 4.0
8.0 to 12
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.0
Sulfur (S), % 0 to 0.020
0 to 0.040