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AISI 440A Stainless Steel vs. SAE-AISI 4028 Steel

Both AISI 440A stainless steel and SAE-AISI 4028 steel are iron alloys. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 5.0 to 20
14 to 23
Fatigue Strength, MPa 270 to 790
180 to 330
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 1040
310 to 380
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
490 to 630
Tensile Strength: Yield (Proof), MPa 420 to 1650
260 to 520

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 760
400
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
49
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.1
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 31
19
Embodied Water, L/kg 120
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
81 to 95
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 65
17 to 22
Strength to Weight: Bending, points 23 to 43
18 to 21
Thermal Diffusivity, mm2/s 6.2
13
Thermal Shock Resistance, points 26 to 65
16 to 20

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.25 to 0.3
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 78.4 to 83.4
98.1 to 98.7
Manganese (Mn), % 0 to 1.0
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.75
0.2 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0.035 to 0.050

Comparable Variants