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AISI 440A Stainless Steel vs. ASTM Grade HG10 MNN Steel

Both AISI 440A stainless steel and ASTM grade HG10 MNN steel are iron alloys. They have 81% 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 AISI 440A stainless steel and the bottom bar is ASTM grade HG10 MNN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.0 to 20
23
Fatigue Strength, MPa 270 to 790
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
590
Tensile Strength: Yield (Proof), MPa 420 to 1650
250

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 400
500
Maximum Temperature: Mechanical, °C 760
990
Melting Completion (Liquidus), °C 1480
1420
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
21
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
4.0
Embodied Energy, MJ/kg 31
58
Embodied Water, L/kg 120
160

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 65
21
Strength to Weight: Bending, points 23 to 43
20
Thermal Diffusivity, mm2/s 6.2
3.9
Thermal Shock Resistance, points 26 to 65
13

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.070 to 0.11
Chromium (Cr), % 16 to 18
18.5 to 20.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 78.4 to 83.4
57.9 to 66.5
Manganese (Mn), % 0 to 1.0
3.0 to 5.0
Molybdenum (Mo), % 0 to 0.75
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 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.030