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S35140 Stainless Steel vs. S30415 Stainless Steel

Both S35140 stainless steel and S30415 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 77% of their average alloy composition in common.

For each property being compared, the top bar is S35140 stainless steel and the bottom bar is S30415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
45
Fatigue Strength, MPa 250
300
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
84
Shear Modulus, GPa 78
77
Shear Strength, MPa 460
470
Tensile Strength: Ultimate (UTS), MPa 690
670
Tensile Strength: Yield (Proof), MPa 310
330

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 500
420
Maximum Temperature: Mechanical, °C 1100
940
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 16
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 31
15
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.5
3.1
Embodied Energy, MJ/kg 78
43
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 28
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
250
Resilience: Unit (Modulus of Resilience), kJ/m3 250
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 3.7
5.6
Thermal Shock Resistance, points 16
15

Alloy Composition

Carbon (C), % 0 to 0.1
0.040 to 0.060
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 20 to 22
18 to 19
Iron (Fe), % 44.1 to 52.7
67.8 to 71.8
Manganese (Mn), % 1.0 to 3.0
0 to 0.8
Molybdenum (Mo), % 1.0 to 2.0
0
Nickel (Ni), % 25 to 27
9.0 to 10
Niobium (Nb), % 0.25 to 0.75
0
Nitrogen (N), % 0.080 to 0.2
0.12 to 0.18
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
1.0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030