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AISI 431 Stainless Steel vs. S30615 Stainless Steel

Both AISI 431 stainless steel and S30615 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 15 to 17
39
Fatigue Strength, MPa 430 to 610
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 550 to 840
470
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
690
Tensile Strength: Yield (Proof), MPa 710 to 1040
310

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 850
960
Melting Completion (Liquidus), °C 1510
1370
Melting Onset (Solidus), °C 1450
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 26
14
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
19
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.2
3.7
Embodied Energy, MJ/kg 31
53
Embodied Water, L/kg 120
170

Common Calculations

PREN (Pitting Resistance) 16
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 50
25
Strength to Weight: Bending, points 27 to 36
23
Thermal Diffusivity, mm2/s 7.0
3.7
Thermal Shock Resistance, points 28 to 43
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0 to 0.2
0.16 to 0.24
Chromium (Cr), % 15 to 17
17 to 19.5
Iron (Fe), % 78.2 to 83.8
56.7 to 65.3
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 1.3 to 2.5
13.5 to 16
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 0.030
0 to 0.030