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SAE-AISI D3 Steel vs. EN 1.4945 Stainless Steel

Both SAE-AISI D3 steel and EN 1.4945 stainless steel are iron alloys. They have 75% 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 D3 steel and the bottom bar is EN 1.4945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.8 to 15
19 to 34
Fatigue Strength, MPa 310 to 940
230 to 350
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 470 to 1220
430 to 460
Tensile Strength: Ultimate (UTS), MPa 770 to 2050
640 to 740
Tensile Strength: Yield (Proof), MPa 480 to 1550
290 to 550

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1430
1490
Melting Onset (Solidus), °C 1390
1440
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 31
14
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
30
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.2
5.0
Embodied Energy, MJ/kg 48
73
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 13
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 180
130 to 180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 74
22 to 25
Strength to Weight: Bending, points 24 to 47
20 to 22
Thermal Diffusivity, mm2/s 8.3
3.7
Thermal Shock Resistance, points 23 to 63
14 to 16

Alloy Composition

Carbon (C), % 2.0 to 2.4
0.040 to 0.1
Chromium (Cr), % 11 to 13.5
15.5 to 17.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.3 to 87
57.9 to 65.7
Manganese (Mn), % 0 to 0.6
0 to 1.5
Nickel (Ni), % 0 to 0.3
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.6
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0 to 1.0
2.5 to 3.5
Vanadium (V), % 0 to 1.0
0