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S30415 Stainless Steel vs. N08904 Stainless Steel

Both S30415 stainless steel and N08904 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 75% of their average alloy composition in common.

For each property being compared, the top bar is S30415 stainless steel and the bottom bar is N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
38
Fatigue Strength, MPa 300
200
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
77
Shear Modulus, GPa 77
79
Shear Strength, MPa 470
370
Tensile Strength: Ultimate (UTS), MPa 670
540
Tensile Strength: Yield (Proof), MPa 330
240

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
32
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.1
5.8
Embodied Energy, MJ/kg 43
79
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 21
37
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
170
Resilience: Unit (Modulus of Resilience), kJ/m3 280
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 5.6
3.1
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0.040 to 0.060
0 to 0.020
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 19
19 to 23
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 67.8 to 71.8
38.8 to 53
Manganese (Mn), % 0 to 0.8
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 9.0 to 10
23 to 28
Nitrogen (N), % 0.12 to 0.18
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.035