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SAE-AISI D4 Steel vs. S44735 Stainless Steel

Both SAE-AISI D4 steel and S44735 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 25 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 D4 steel and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 8.4 to 15
21
Fatigue Strength, MPa 310 to 920
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 74
82
Shear Strength, MPa 460 to 1210
390
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
630
Tensile Strength: Yield (Proof), MPa 470 to 1540
460

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
21
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.3
4.4
Embodied Energy, MJ/kg 49
61
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 15
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
120
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27 to 75
23
Strength to Weight: Bending, points 24 to 47
21
Thermal Shock Resistance, points 23 to 63
20

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.030
Chromium (Cr), % 11 to 13
28 to 30
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
60.7 to 68.4
Manganese (Mn), % 0 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.7 to 1.2
3.6 to 4.2
Nickel (Ni), % 0 to 0.3
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0
Vanadium (V), % 0 to 1.0
0