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EN 1.4020 Stainless Steel vs. SAE-AISI D4 Steel

Both EN 1.4020 stainless steel and SAE-AISI D4 steel are iron alloys. They have 80% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4020 stainless steel and the bottom bar is SAE-AISI D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 13 to 34
8.4 to 15
Fatigue Strength, MPa 340 to 540
310 to 920
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
74
Shear Strength, MPa 510 to 680
460 to 1210
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
760 to 2060
Tensile Strength: Yield (Proof), MPa 430 to 950
470 to 1540

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
8.0
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
3.3
Embodied Energy, MJ/kg 37
49
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 23
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
100 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
27 to 75
Strength to Weight: Bending, points 25 to 32
24 to 47
Thermal Shock Resistance, points 16 to 23
23 to 63

Alloy Composition

Carbon (C), % 0 to 0.15
2.1 to 2.4
Chromium (Cr), % 16.5 to 19
11 to 13
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 62.8 to 71.8
80.6 to 86.3
Manganese (Mn), % 11 to 14
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 0.5 to 2.5
0 to 0.3
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 1.0