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SAE-AISI D4 Steel vs. EN 1.4031 Stainless Steel

Both SAE-AISI D4 steel and EN 1.4031 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 1.4031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.4 to 15
11 to 13
Fatigue Strength, MPa 310 to 920
220 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
76
Shear Strength, MPa 460 to 1210
400 to 540
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
670 to 900
Tensile Strength: Yield (Proof), MPa 470 to 1540
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
30
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.3
1.9
Embodied Energy, MJ/kg 49
27
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 15
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
77 to 94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
24 to 32
Strength to Weight: Bending, points 24 to 47
22 to 27
Thermal Diffusivity, mm2/s 8.3
8.1
Thermal Shock Resistance, points 23 to 63
23 to 32

Alloy Composition

Carbon (C), % 2.1 to 2.4
0.36 to 0.42
Chromium (Cr), % 11 to 13
12.5 to 14.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
83 to 87.1
Manganese (Mn), % 0 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
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 0.015
Vanadium (V), % 0 to 1.0
0

Comparable Variants