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ASTM Grade HH Steel vs. EN 1.7233 Steel

Both ASTM grade HH steel and EN 1.7233 steel are iron alloys. They have 62% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HH steel and the bottom bar is EN 1.7233 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
210 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
18 to 23
Fatigue Strength, MPa 150
270 to 530
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 580
700 to 960
Tensile Strength: Yield (Proof), MPa 270
380 to 780

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
430
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
39
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 20
3.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.7
1.6
Embodied Energy, MJ/kg 53
21
Embodied Water, L/kg 180
53

Common Calculations

PREN (Pitting Resistance) 27
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
110 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 190
380 to 1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
25 to 34
Strength to Weight: Bending, points 20
22 to 28
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 12
21 to 28

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.39 to 0.45
Chromium (Cr), % 24 to 28
1.2 to 1.5
Iron (Fe), % 52.9 to 64.8
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), % 11 to 14
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.035