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SAE-AISI T1 Steel vs. AISI 431 Stainless Steel

Both SAE-AISI T1 steel and AISI 431 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T1 steel and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
890 to 1380

Thermal Properties

Latent Heat of Fusion, J/g 240
280
Melting Completion (Liquidus), °C 1810
1510
Melting Onset (Solidus), °C 1750
1450
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 45
9.0
Density, g/cm3 9.3
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.2
Embodied Energy, MJ/kg 130
31
Embodied Water, L/kg 90
120

Common Calculations

PREN (Pitting Resistance) 34
16
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 23 to 64
32 to 50
Strength to Weight: Bending, points 20 to 40
27 to 36
Thermal Diffusivity, mm2/s 5.2
7.0
Thermal Shock Resistance, points 23 to 64
28 to 43

Alloy Composition

Carbon (C), % 0.65 to 0.8
0 to 0.2
Chromium (Cr), % 3.8 to 4.5
15 to 17
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.2 to 77.2
78.2 to 83.8
Manganese (Mn), % 0.1 to 0.4
0 to 1.0
Nickel (Ni), % 0 to 0.3
1.3 to 2.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 17.3 to 18.8
0
Vanadium (V), % 0.9 to 1.3
0

Comparable Variants