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SAE-AISI D4 Steel vs. EN 1.4901 Stainless Steel

Both SAE-AISI D4 steel and EN 1.4901 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.4 to 15
19
Fatigue Strength, MPa 310 to 920
310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 460 to 1210
460
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
740
Tensile Strength: Yield (Proof), MPa 470 to 1540
490

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1430
1490
Melting Onset (Solidus), °C 1380
1450
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 31
26
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
11
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 49
40
Embodied Water, L/kg 100
89

Common Calculations

PREN (Pitting Resistance) 15
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 75
26
Strength to Weight: Bending, points 24 to 47
23
Thermal Diffusivity, mm2/s 8.3
6.9
Thermal Shock Resistance, points 23 to 63
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 2.1 to 2.4
0.070 to 0.13
Chromium (Cr), % 11 to 13
8.5 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
85.8 to 89.1
Manganese (Mn), % 0 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0.7 to 1.2
0.3 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0 to 1.0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010