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SAE-AISI T2 Steel vs. EN 1.4971 Stainless Steel

Both SAE-AISI T2 steel and EN 1.4971 stainless steel are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T2 steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
81
Tensile Strength: Ultimate (UTS), MPa 780 to 2150
800

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1820
1460
Melting Onset (Solidus), °C 1760
1410
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 19
13
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 46
70
Density, g/cm3 9.3
8.4
Embodied Carbon, kg CO2/kg material 11
7.6
Embodied Energy, MJ/kg 170
110
Embodied Water, L/kg 98
300

Common Calculations

PREN (Pitting Resistance) 36
38
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23 to 64
26
Strength to Weight: Bending, points 20 to 40
23
Thermal Diffusivity, mm2/s 4.9
3.4
Thermal Shock Resistance, points 23 to 65
19

Alloy Composition

Carbon (C), % 0.8 to 0.9
0.080 to 0.16
Chromium (Cr), % 3.8 to 4.5
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70.8 to 75.8
24.3 to 37.1
Manganese (Mn), % 0.2 to 0.4
0 to 2.0
Molybdenum (Mo), % 0 to 1.0
2.5 to 3.5
Nickel (Ni), % 0 to 0.3
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 17.5 to 19
2.0 to 3.0
Vanadium (V), % 1.8 to 2.4
0