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S40920 Stainless Steel vs. S30615 Stainless Steel

Both S40920 stainless steel and S30615 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 73% 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 S40920 stainless steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
39
Fatigue Strength, MPa 130
270
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 77
84
Shear Modulus, GPa 75
75
Shear Strength, MPa 270
470
Tensile Strength: Ultimate (UTS), MPa 430
690
Tensile Strength: Yield (Proof), MPa 190
310

Thermal Properties

Latent Heat of Fusion, J/g 270
340
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 710
960
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1400
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 26
14
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
19
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.0
3.7
Embodied Energy, MJ/kg 28
53
Embodied Water, L/kg 94
170

Common Calculations

PREN (Pitting Resistance) 11
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
220
Resilience: Unit (Modulus of Resilience), kJ/m3 97
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 15
25
Strength to Weight: Bending, points 16
23
Thermal Diffusivity, mm2/s 6.9
3.7
Thermal Shock Resistance, points 15
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0 to 0.030
0.16 to 0.24
Chromium (Cr), % 10.5 to 11.7
17 to 19.5
Iron (Fe), % 85.1 to 89.4
56.7 to 65.3
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0 to 0.5
13.5 to 16
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
3.2 to 4.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0.15 to 0.5
0