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SAE-AISI D4 Steel vs. EN 1.4373 Stainless Steel

Both SAE-AISI D4 steel and EN 1.4373 stainless steel are iron alloys. They have 80% 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 EN 1.4373 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.4 to 15
46
Fatigue Strength, MPa 310 to 920
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 460 to 1210
530
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
750
Tensile Strength: Yield (Proof), MPa 470 to 1540
370

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 49
40
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 15
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
27
Strength to Weight: Bending, points 24 to 47
24
Thermal Diffusivity, mm2/s 8.3
4.0
Thermal Shock Resistance, points 23 to 63
16

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.15
Chromium (Cr), % 11 to 13
17 to 19
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
63 to 71.5
Manganese (Mn), % 0 to 0.6
7.5 to 10.5
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
4.0 to 6.0
Nitrogen (N), % 0
0.050 to 0.25
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 0.015
Vanadium (V), % 0 to 1.0
0