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N08031 Stainless Steel vs. SAE-AISI 4130 Steel

Both N08031 stainless steel and SAE-AISI 4130 steel are iron alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 N08031 stainless steel and the bottom bar is SAE-AISI 4130 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
13 to 26
Fatigue Strength, MPa 290
320 to 660
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 510
340 to 640
Tensile Strength: Ultimate (UTS), MPa 730
530 to 1040
Tensile Strength: Yield (Proof), MPa 310
440 to 980

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
43
Thermal Expansion, µm/m-K 18
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
2.4
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 7.1
1.5
Embodied Energy, MJ/kg 96
20
Embodied Water, L/kg 240
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
83 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 230
500 to 2550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
19 to 37
Strength to Weight: Bending, points 22
19 to 29
Thermal Diffusivity, mm2/s 3.1
12
Thermal Shock Resistance, points 14
16 to 31

Alloy Composition

Carbon (C), % 0 to 0.015
0.28 to 0.33
Chromium (Cr), % 26 to 28
0.8 to 1.1
Copper (Cu), % 1.0 to 1.4
0
Iron (Fe), % 29 to 36.9
97.3 to 98.2
Manganese (Mn), % 0 to 2.0
0.4 to 0.6
Molybdenum (Mo), % 6.0 to 7.0
0.15 to 0.25
Nickel (Ni), % 30 to 32
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040