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AISI 439 Stainless Steel vs. SAE-AISI T15 Steel

Both AISI 439 stainless steel and SAE-AISI T15 steel are iron alloys. They have 76% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is SAE-AISI T15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 490
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1510
1690
Melting Onset (Solidus), °C 1430
1640
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 25
21
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
43
Density, g/cm3 7.7
8.7
Embodied Carbon, kg CO2/kg material 2.3
16
Embodied Energy, MJ/kg 34
250
Embodied Water, L/kg 120
140

Common Calculations

PREN (Pitting Resistance) 18
27
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 18
26 to 71
Strength to Weight: Bending, points 18
22 to 43
Thermal Diffusivity, mm2/s 6.7
5.6
Thermal Shock Resistance, points 16
26 to 70

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
1.5 to 1.6
Chromium (Cr), % 17 to 19
3.8 to 5.0
Cobalt (Co), % 0
4.8 to 5.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 77.1 to 82.8
67.5 to 73.5
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 0.3
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.2 to 1.1
0
Tungsten (W), % 0
11.8 to 13
Vanadium (V), % 0
4.5 to 5.3