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S30415 Stainless Steel vs. S31727 Stainless Steel

Both S30415 stainless steel and S31727 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S30415 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
40
Fatigue Strength, MPa 300
240
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
83
Shear Modulus, GPa 77
78
Shear Strength, MPa 470
430
Tensile Strength: Ultimate (UTS), MPa 670
630
Tensile Strength: Yield (Proof), MPa 330
270

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 940
1010
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
24
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.1
4.7
Embodied Energy, MJ/kg 43
64
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 21
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
200
Resilience: Unit (Modulus of Resilience), kJ/m3 280
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
20
Thermal Shock Resistance, points 15
14

Alloy Composition

Carbon (C), % 0.040 to 0.060
0 to 0.030
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 19
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 67.8 to 71.8
53.7 to 61.3
Manganese (Mn), % 0 to 0.8
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 9.0 to 10
14.5 to 16.5
Nitrogen (N), % 0.12 to 0.18
0.15 to 0.21
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030