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ASTM Grade HP Steel vs. EN 1.0425 Steel

Both ASTM grade HP steel and EN 1.0425 steel are iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is EN 1.0425 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.1
24
Fatigue Strength, MPa 130
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 490
470
Tensile Strength: Yield (Proof), MPa 260
260

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1370
1460
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
50
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
1.5
Embodied Energy, MJ/kg 82
20
Embodied Water, L/kg 220
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
98
Resilience: Unit (Modulus of Resilience), kJ/m3 170
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 3.2
13
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.024
Carbon (C), % 0.35 to 0.75
0 to 0.2
Chromium (Cr), % 24 to 28
0 to 0.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 29.2 to 42.7
96.9 to 99.18
Manganese (Mn), % 0 to 2.0
0.8 to 1.4
Molybdenum (Mo), % 0 to 0.5
0 to 0.080
Nickel (Ni), % 33 to 37
0 to 0.3
Niobium (Nb), % 0
0 to 0.020
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.5
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.020