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SAE-AISI D4 Steel vs. EN 1.4618 Stainless Steel

Both SAE-AISI D4 steel and EN 1.4618 stainless steel are iron alloys. They have 81% 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 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.4 to 15
51
Fatigue Strength, MPa 310 to 920
240 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 460 to 1210
480 to 500
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
680 to 700
Tensile Strength: Yield (Proof), MPa 470 to 1540
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 270
280
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
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.7

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
2.7
Embodied Energy, MJ/kg 49
39
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 15
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
270 to 280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
24 to 25
Strength to Weight: Bending, points 24 to 47
22 to 23
Thermal Diffusivity, mm2/s 8.3
4.0
Thermal Shock Resistance, points 23 to 63
15 to 16

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.1
Chromium (Cr), % 11 to 13
16.5 to 18.5
Copper (Cu), % 0 to 0.25
1.0 to 2.5
Iron (Fe), % 80.6 to 86.3
62.7 to 72.5
Manganese (Mn), % 0 to 0.6
5.5 to 9.5
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.030
0 to 0.070
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0 to 1.0
0