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ASTM Grade HN Steel vs. C72700 Copper-nickel

ASTM grade HN steel belongs to the iron alloys classification, while C72700 copper-nickel belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 9.0
4.0 to 36
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
44
Tensile Strength: Ultimate (UTS), MPa 500
460 to 1070

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Maximum Temperature: Mechanical, °C 1080
200
Melting Completion (Liquidus), °C 1400
1100
Melting Onset (Solidus), °C 1350
930
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 13
54
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 26
36
Density, g/cm3 7.9
8.8
Embodied Carbon, kg CO2/kg material 4.6
4.0
Embodied Energy, MJ/kg 66
62
Embodied Water, L/kg 180
350

Common Calculations

Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 17
14 to 34
Strength to Weight: Bending, points 18
15 to 26
Thermal Diffusivity, mm2/s 3.5
16
Thermal Shock Resistance, points 11
16 to 38

Alloy Composition

Carbon (C), % 0.2 to 0.5
0
Chromium (Cr), % 19 to 23
0
Copper (Cu), % 0
82.1 to 86
Iron (Fe), % 44.9 to 57.8
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0 to 2.0
0.050 to 0.3
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 23 to 27
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
5.5 to 6.5
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.3