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SAE-AISI D4 Steel vs. S32803 Stainless Steel

Both SAE-AISI D4 steel and S32803 stainless steel are iron alloys. They have 79% 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 S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 8.4 to 15
18
Fatigue Strength, MPa 310 to 920
350
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 74
81
Shear Strength, MPa 460 to 1210
420
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
680
Tensile Strength: Yield (Proof), MPa 470 to 1540
560

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
16
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
19
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.3
3.7
Embodied Energy, MJ/kg 49
53
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 15
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
120
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
25
Strength to Weight: Bending, points 24 to 47
22
Thermal Diffusivity, mm2/s 8.3
4.4
Thermal Shock Resistance, points 23 to 63
22

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.015
Chromium (Cr), % 11 to 13
28 to 29
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
62.9 to 67.1
Manganese (Mn), % 0 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.7 to 1.2
1.8 to 2.5
Nickel (Ni), % 0 to 0.3
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.0035
Vanadium (V), % 0 to 1.0
0