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SAE-AISI D4 Steel vs. N08904 Stainless Steel

Both SAE-AISI D4 steel and N08904 stainless steel are iron alloys. They have 60% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D4 steel and the bottom bar is N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.4 to 15
38
Fatigue Strength, MPa 310 to 920
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
79
Shear Strength, MPa 460 to 1210
370
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
540
Tensile Strength: Yield (Proof), MPa 470 to 1540
240

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 31
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
32
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.3
5.8
Embodied Energy, MJ/kg 49
79
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 15
37
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 75
19
Strength to Weight: Bending, points 24 to 47
18
Thermal Diffusivity, mm2/s 8.3
3.1
Thermal Shock Resistance, points 23 to 63
12

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.020
Chromium (Cr), % 11 to 13
19 to 23
Copper (Cu), % 0 to 0.25
1.0 to 2.0
Iron (Fe), % 80.6 to 86.3
38.8 to 53
Manganese (Mn), % 0 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.7 to 1.2
4.0 to 5.0
Nickel (Ni), % 0 to 0.3
23 to 28
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.035
Vanadium (V), % 0 to 1.0
0