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ASTM Grade HG10 MNN Steel vs. ASTM Grade HN Steel

Both ASTM grade HG10 MNN steel and ASTM grade HN steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 85% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HG10 MNN steel and the bottom bar is ASTM grade HN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
9.0
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 590
500

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 500
420
Maximum Temperature: Mechanical, °C 990
1080
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1370
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 21
26
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.0
4.6
Embodied Energy, MJ/kg 58
66
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 25
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 3.9
3.5
Thermal Shock Resistance, points 13
11

Alloy Composition

Carbon (C), % 0.070 to 0.11
0.2 to 0.5
Chromium (Cr), % 18.5 to 20.5
19 to 23
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 57.9 to 66.5
44.9 to 57.8
Manganese (Mn), % 3.0 to 5.0
0 to 2.0
Molybdenum (Mo), % 0.25 to 0.45
0 to 0.5
Nickel (Ni), % 11.5 to 13.5
23 to 27
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040