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ASTM Grade HP Steel vs. EN 1.7233 Steel

Both ASTM grade HP steel and EN 1.7233 steel are iron alloys. They have a modest 39% 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 ASTM grade HP steel and the bottom bar is EN 1.7233 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.1
18 to 23
Fatigue Strength, MPa 130
270 to 530
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 490
700 to 960
Tensile Strength: Yield (Proof), MPa 260
380 to 780

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1100
430
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
39
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 34
3.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 5.8
1.6
Embodied Energy, MJ/kg 82
21
Embodied Water, L/kg 220
53

Common Calculations

PREN (Pitting Resistance) 27
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
110 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 170
380 to 1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
25 to 34
Strength to Weight: Bending, points 17
22 to 28
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 11
21 to 28

Alloy Composition

Carbon (C), % 0.35 to 0.75
0.39 to 0.45
Chromium (Cr), % 24 to 28
1.2 to 1.5
Iron (Fe), % 29.2 to 42.7
96.2 to 97.5
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.5
0.5 to 0.7
Nickel (Ni), % 33 to 37
0
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 0.035