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S30415 Stainless Steel vs. S35140 Stainless Steel

Both S30415 stainless steel and S35140 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 S30415 stainless steel and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
500
Maximum Temperature: Mechanical, °C 940
1100
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
14
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
31
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.1
5.5
Embodied Energy, MJ/kg 43
78
Embodied Water, L/kg 140
190

Common Calculations

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

Alloy Composition

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