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EN 1.7233 Steel vs. ASTM Grade HP Steel

Both EN 1.7233 steel and ASTM grade HP 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 EN 1.7233 steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 430
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 39
12
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Carbon (C), % 0.39 to 0.45
0.35 to 0.75
Chromium (Cr), % 1.2 to 1.5
24 to 28
Iron (Fe), % 96.2 to 97.5
29.2 to 42.7
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.5 to 0.7
0 to 0.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 2.5
Sulfur (S), % 0 to 0.035
0 to 0.040