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S31655 Stainless Steel vs. S30615 Stainless Steel

Both S31655 stainless steel and S30615 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S31655 stainless steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
39
Fatigue Strength, MPa 300
270
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
84
Shear Modulus, GPa 78
75
Shear Strength, MPa 490
470
Tensile Strength: Ultimate (UTS), MPa 710
690
Tensile Strength: Yield (Proof), MPa 350
310

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 1010
960
Melting Completion (Liquidus), °C 1430
1370
Melting Onset (Solidus), °C 1380
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 17
19
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.3
3.7
Embodied Energy, MJ/kg 46
53
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 27
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
220
Resilience: Unit (Modulus of Resilience), kJ/m3 310
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 4.0
3.7
Thermal Shock Resistance, points 16
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0 to 0.030
0.16 to 0.24
Chromium (Cr), % 19.5 to 21.5
17 to 19.5
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 63.2 to 71.9
56.7 to 65.3
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0.5 to 1.5
0
Nickel (Ni), % 8.0 to 9.5
13.5 to 16
Nitrogen (N), % 0.14 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
3.2 to 4.0
Sulfur (S), % 0 to 0.015
0 to 0.030