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SAE-AISI 4130 Steel vs. N08330 Stainless Steel

Both SAE-AISI 4130 steel and N08330 stainless steel are iron alloys. They have 45% of their average alloy composition in common. There are 31 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 4130 steel and the bottom bar is N08330 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 300
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13 to 26
34
Fatigue Strength, MPa 320 to 660
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 340 to 640
360
Tensile Strength: Ultimate (UTS), MPa 530 to 1040
550
Tensile Strength: Yield (Proof), MPa 440 to 980
230

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 420
1050
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 43
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
32
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.5
5.4
Embodied Energy, MJ/kg 20
77
Embodied Water, L/kg 50
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 180
150
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 2550
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19 to 37
19
Strength to Weight: Bending, points 19 to 29
18
Thermal Diffusivity, mm2/s 12
3.1
Thermal Shock Resistance, points 16 to 31
13

Alloy Composition

Carbon (C), % 0.28 to 0.33
0 to 0.080
Chromium (Cr), % 0.8 to 1.1
17 to 20
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 97.3 to 98.2
38.3 to 48.3
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0.4 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
34 to 37
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0.75 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.030
Tin (Sn), % 0
0 to 0.025