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SAE-AISI D4 Steel vs. AISI 303 Stainless Steel

Both SAE-AISI D4 steel and AISI 303 stainless steel are iron alloys. They have 84% 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 AISI 303 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 8.4 to 15
40 to 51
Fatigue Strength, MPa 310 to 920
230 to 360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 460 to 1210
430 to 470
Tensile Strength: Ultimate (UTS), MPa 760 to 2060
600 to 690
Tensile Strength: Yield (Proof), MPa 470 to 1540
230 to 420

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 31
16
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 5.0
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.3
3.0
Embodied Energy, MJ/kg 49
42
Embodied Water, L/kg 100
140

Common Calculations

PREN (Pitting Resistance) 15
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 160
240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 75
21 to 25
Strength to Weight: Bending, points 24 to 47
20 to 22
Thermal Diffusivity, mm2/s 8.3
4.4
Thermal Shock Resistance, points 23 to 63
13 to 15

Alloy Composition

Carbon (C), % 2.1 to 2.4
0 to 0.15
Chromium (Cr), % 11 to 13
17 to 19
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.6 to 86.3
67.3 to 74.9
Manganese (Mn), % 0 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
8.0 to 10
Phosphorus (P), % 0 to 0.030
0 to 0.2
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35
Vanadium (V), % 0 to 1.0
0

Comparable Variants