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ASTM Grade HC Steel vs. EN 1.7725 Steel

Both ASTM grade HC steel and EN 1.7725 steel are iron alloys. They have 71% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HC steel and the bottom bar is EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.0
14
Fatigue Strength, MPa 96
390 to 550
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 430
830 to 1000
Tensile Strength: Yield (Proof), MPa 200
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.9
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.8
Embodied Energy, MJ/kg 40
24
Embodied Water, L/kg 170
54

Common Calculations

PREN (Pitting Resistance) 29
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 95
980 to 1940
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 16
29 to 35
Strength to Weight: Bending, points 16
25 to 28
Thermal Diffusivity, mm2/s 4.5
11
Thermal Shock Resistance, points 14
24 to 29

Alloy Composition

Carbon (C), % 0 to 0.5
0.27 to 0.34
Chromium (Cr), % 26 to 30
1.3 to 1.7
Iron (Fe), % 61.9 to 74
95.7 to 97.5
Manganese (Mn), % 0 to 1.0
0.6 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.3 to 0.5
Nickel (Ni), % 0 to 4.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15