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S46800 Stainless Steel vs. S30415 Stainless Steel

Both S46800 stainless steel and S30415 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is S46800 stainless steel and the bottom bar is S30415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25
45
Fatigue Strength, MPa 160
300
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 79
84
Shear Modulus, GPa 77
77
Shear Strength, MPa 300
470
Tensile Strength: Ultimate (UTS), MPa 470
670
Tensile Strength: Yield (Proof), MPa 230
330

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 500
420
Maximum Temperature: Mechanical, °C 920
940
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
21
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.6
3.1
Embodied Energy, MJ/kg 37
43
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 19
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98
250
Resilience: Unit (Modulus of Resilience), kJ/m3 130
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 6.1
5.6
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.060
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 18 to 20
18 to 19
Iron (Fe), % 76.5 to 81.8
67.8 to 71.8
Manganese (Mn), % 0 to 1.0
0 to 0.8
Nickel (Ni), % 0 to 0.5
9.0 to 10
Niobium (Nb), % 0.1 to 0.6
0
Nitrogen (N), % 0 to 0.030
0.12 to 0.18
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
1.0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0.070 to 0.3
0