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ASTM A372 Grade J Steel vs. ASTM Grade HG10 MNN Steel

Both ASTM A372 grade J steel and ASTM grade HG10 MNN steel are iron alloys. They have 65% 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 A372 grade J steel and the bottom bar is ASTM grade HG10 MNN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 310
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17 to 22
23
Fatigue Strength, MPa 310 to 570
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 650 to 1020
590
Tensile Strength: Yield (Proof), MPa 430 to 850
250

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
990
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
4.0
Embodied Energy, MJ/kg 20
58
Embodied Water, L/kg 51
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 1930
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 36
21
Strength to Weight: Bending, points 21 to 29
20
Thermal Diffusivity, mm2/s 12
3.9
Thermal Shock Resistance, points 19 to 30
13

Alloy Composition

Carbon (C), % 0.35 to 0.5
0.070 to 0.11
Chromium (Cr), % 0.8 to 1.2
18.5 to 20.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 96.7 to 97.8
57.9 to 66.5
Manganese (Mn), % 0.75 to 1.1
3.0 to 5.0
Molybdenum (Mo), % 0.15 to 0.25
0.25 to 0.45
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.030