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Annealed AISI 304L vs. Annealed SAE-AISI D7

Both annealed AISI 304L and annealed SAE-AISI D7 are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 24 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 annealed AISI 304L and the bottom bar is annealed SAE-AISI D7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 79
100
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
800

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
27
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 16
10
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.1
11
Embodied Energy, MJ/kg 44
180
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 20
16
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
29
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 4.2
7.4
Thermal Shock Resistance, points 12
27

Alloy Composition

Carbon (C), % 0 to 0.030
2.2 to 2.5
Chromium (Cr), % 18 to 20
11.5 to 13.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 65 to 74
76.6 to 81.9
Manganese (Mn), % 0 to 2.0
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 8.0 to 12
0 to 0.3
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
3.8 to 4.4