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SAE-AISI A4 Steel vs. S35000 Stainless Steel

Both SAE-AISI A4 steel and S35000 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A4 steel and the bottom bar is S35000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 710 to 2050
1300 to 1570

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
16
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
3.2
Embodied Energy, MJ/kg 24
44
Embodied Water, L/kg 59
130

Common Calculations

PREN (Pitting Resistance) 5.3
28
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 73
46 to 56
Strength to Weight: Bending, points 23 to 46
34 to 38
Thermal Diffusivity, mm2/s 11
4.4
Thermal Shock Resistance, points 23 to 67
42 to 51

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.070 to 0.11
Chromium (Cr), % 0.9 to 2.2
16 to 17
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 92 to 95.5
72.7 to 76.9
Manganese (Mn), % 1.8 to 2.2
0.5 to 1.3
Molybdenum (Mo), % 0.9 to 1.4
2.5 to 3.2
Nickel (Ni), % 0 to 0.3
4.0 to 5.0
Nitrogen (N), % 0
0.070 to 0.13
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants