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EN 1.7379 Steel vs. ASTM Grade HP Steel

Both EN 1.7379 steel and ASTM grade HP steel are iron alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. 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 1.7379 steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
5.1
Fatigue Strength, MPa 320
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Tensile Strength: Ultimate (UTS), MPa 670
490
Tensile Strength: Yield (Proof), MPa 460
260

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 460
1100
Melting Completion (Liquidus), °C 1470
1370
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.8
5.8
Embodied Energy, MJ/kg 23
82
Embodied Water, L/kg 59
220

Common Calculations

PREN (Pitting Resistance) 5.7
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
21
Resilience: Unit (Modulus of Resilience), kJ/m3 550
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
17
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 19
11

Alloy Composition

Carbon (C), % 0.13 to 0.2
0.35 to 0.75
Chromium (Cr), % 2.0 to 2.5
24 to 28
Iron (Fe), % 94.5 to 96.5
29.2 to 42.7
Manganese (Mn), % 0.5 to 0.9
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.2
0 to 0.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040