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Annealed AISI 302 vs. Annealed SAE-AISI D3

Both annealed AISI 302 and annealed SAE-AISI D3 are iron alloys. Both are furnished in the annealed condition. They have 85% of their average alloy composition in common. There are 32 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 annealed AISI 302 and the bottom bar is annealed SAE-AISI D3.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
15
Fatigue Strength, MPa 210
310
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 81
99
Shear Modulus, GPa 77
74
Shear Strength, MPa 400
470
Tensile Strength: Ultimate (UTS), MPa 580
770
Tensile Strength: Yield (Proof), MPa 230
480

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
31
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
8.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.0
3.2
Embodied Energy, MJ/kg 42
48
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 19
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
97
Resilience: Unit (Modulus of Resilience), kJ/m3 140
600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
28
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 4.4
8.3
Thermal Shock Resistance, points 12
23

Alloy Composition

Carbon (C), % 0 to 0.15
2.0 to 2.4
Chromium (Cr), % 17 to 19
11 to 13.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 67.9 to 75
80.3 to 87
Manganese (Mn), % 0 to 2.0
0 to 0.6
Nickel (Ni), % 8.0 to 10
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
Tungsten (W), % 0
0 to 1.0
Vanadium (V), % 0
0 to 1.0