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S42030 Stainless Steel vs. N08801 Stainless Steel

Both S42030 stainless steel and N08801 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 59% of their average alloy composition in common.

For each property being compared, the top bar is S42030 stainless steel and the bottom bar is N08801 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16
34
Fatigue Strength, MPa 250
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 410
570
Tensile Strength: Ultimate (UTS), MPa 670
860
Tensile Strength: Yield (Proof), MPa 410
190

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
630
Maximum Temperature: Mechanical, °C 780
1090
Melting Completion (Liquidus), °C 1450
1390
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 28
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.5
5.5
Embodied Energy, MJ/kg 34
79
Embodied Water, L/kg 110
200

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
220
Resilience: Unit (Modulus of Resilience), kJ/m3 440
92
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
30
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 7.7
3.3
Thermal Shock Resistance, points 24
20

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.1
Chromium (Cr), % 12 to 14
19 to 22
Copper (Cu), % 2.0 to 3.0
0 to 0.5
Iron (Fe), % 77.6 to 85
39.5 to 50.3
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 1.0 to 3.0
0
Nickel (Ni), % 0
30 to 34
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.75 to 1.5