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EN 1.6771 Steel vs. ASTM Grade HP Steel

Both EN 1.6771 steel and ASTM grade HP steel are iron alloys. They have 42% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 350
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.0 to 8.7
5.1
Fatigue Strength, MPa 440 to 680
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 930 to 1180
490
Tensile Strength: Yield (Proof), MPa 740 to 1140
260

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
34
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.9
5.8
Embodied Energy, MJ/kg 25
82
Embodied Water, L/kg 58
220

Common Calculations

PREN (Pitting Resistance) 2.5
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 93
21
Resilience: Unit (Modulus of Resilience), kJ/m3 1460 to 3450
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 33 to 41
17
Strength to Weight: Bending, points 27 to 31
17
Thermal Diffusivity, mm2/s 13
3.2
Thermal Shock Resistance, points 27 to 35
11

Alloy Composition

Carbon (C), % 0.27 to 0.33
0.35 to 0.75
Chromium (Cr), % 0.8 to 1.2
24 to 28
Iron (Fe), % 92.2 to 95
29.2 to 42.7
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
33 to 37
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.5
Sulfur (S), % 0 to 0.020
0 to 0.040