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SAE-AISI D4 Steel vs. S45000 Stainless Steel

Both SAE-AISI D4 steel and S45000 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D4 steel and the bottom bar is S45000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.4 to 15
6.8 to 14
Fatigue Strength, MPa 310 to 920
330 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 460 to 1210
590 to 830
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
980 to 1410
Tensile Strength: Yield (Proof), MPa 470 to 1540
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 49
39
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 15
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
94 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
35 to 50
Strength to Weight: Bending, points 24 to 47
28 to 36
Thermal Diffusivity, mm2/s 8.3
4.5
Thermal Shock Resistance, points 23 to 63
33 to 47

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.050
Chromium (Cr), % 11 to 13
14 to 16
Copper (Cu), % 0 to 0.25
1.3 to 1.8
Iron (Fe), % 80.6 to 86.3
72.1 to 79.3
Manganese (Mn), % 0 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.7 to 1.2
0.5 to 1.0
Nickel (Ni), % 0 to 0.3
5.0 to 7.0
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
Vanadium (V), % 0 to 1.0
0

Comparable Variants